Consulta: subjectFacets:"Incubation"
Registros recuperados: 42
Data/hora: 01/06/2024 07:40:09

Capacidad germinativa de semillas de Taxus globosa Schltdl.
Provedor de dados: 32
Autores: Ramírez Sánchez, Susana Elizabeth.
Taxus globosa Schtdlt. es una especie de importancia no solo por encontrarse en la NOM-059-ECOL-2010, sino, también por que produce un metabolito llamado taxol que es utilizado comercialmente para contrarrestar el cáncer. Actualmente, su obtención de esta especie es complicada, pues por encontrarse dentro de la norma, está prohibida su extracción; además su distribución en México es discontinua y su semilla presenta latencia, condición que dificulta mucho la propagación por medio de semilla; la germinación es escalonada y baja (2 al 14%). Es la única especie de este género en México y se considera endémica de nuestro país y de América central. Por lo que, en la presente investigación se buscó evaluar las diferencias morfológicas en las semillas de dos...
Palavras-chave: Taxus globosa; Germinación; Tratamientos pre-germinativos; Incubación; Estratificación; Germination; Pre-germination treatments; Incubation; Stratification; Producción de Semillas; Doctorado.
Ano: 2012
URL: http://hdl.handle.net/10521/1089

EFFECT OF THERMAL STIMULATION IN EMBRYOS FROM COBB®GENETIC STRAIN UNDER COMMERCIAL SCALE
Provedor de dados: 70
Autores: Flores,Fernanda; Nääs,Irenilza De A.; Garcia,Rodrigo G.
ABSTRACT Studies aimed at producing stronger birds and with better growth performance are being developed involving artificial incubation. To that extent, thermal stimulation by the heat of 1.39 ºC and 1ºC above the standard, and by cold of 36 ºC fixed, were applied in the last week of the embryonic development (day 14 to day 18) to Cobb® strain birds of 33 to 53 weeks age. With the purpose of evaluating the behavior of the embryos facing these temperature stimuli to identify what is the best amplitude, frequency and the most appropriate period to perform temperature variation, obtaining more adapted birds to the field. It has been observed that heat or cold stimulation did not cause embryo mortality and did not affect the hatching and the quality of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hatchability; Incubation; Chick quality; Thermal variation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200236

Tecnicas para a coleta, transporte e incubacao artificial de ovos de Caiman crocodylus yacare (DAUDIN, 1802), (Crocodylia: alligatoridae).
Provedor de dados: 14
Autores: BREYER, F. R. dos S.
O jacare no Pantanal, e uma especie que ha quase uma decada vem sofrendo enorme pressao de caca clandestina, devido ao valor economico de seu couro e ao impedimento de sua utilizacao na forma de individuos adultos. O uso deste recurso natural necessita de legalizacao para tornar-se um complemento economico para as propriedades da regiao, hoje, exclusivamente sustentadas pela pecuaria. Atualmente, o manejo sustentado da especie, em condicoes naturais, e a forma mais viavel para sua explotacao racional. Baseia-se na coleta de ovos, sua incubacao e a manutencao dos filhotes em cativeiro. Um percentual dos filhotes nascidos, apos alcancarem um porte de mais de 60 cm de comprimento total, quando estao menos susceptiveis as predacoes naturais, serao repostos na...
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Coleta; Caiman Crocodylus yacare; Animal silvestre; Alligator; Incubation; Collect; Savage animal; Management.; Incubação; Manejo; Jacaré; Transporte.; Wildlife.
Ano: 1987
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/787740

The culture of Hoplosternum littorale : State of the art and perspectives
Provedor de dados: 5
Autores: Luquet, P; Boujard, Thierry; Planquette, P; Moreau, Y; Hostache, G.
Hoplosternum littorale is a siluriform fish of very high commercial value in some countries of South America. Some biological characteristics as easy spawning in confinement and good tolerance of low oxygen level make it easy to cultivate.
Tipo: Text
Palavras-chave: Fish ponds; Incubation; Brood stocks; Circadian rhythms; Sexual maturity; Sex ratio; Rearing; Respiration; Survival; Diets; Larvae; Fecundity; Hatching; Oxygen; Feeding behaviour; Fish culture.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1491.pdf

Influence de la temperature sur la differentiation sexuelle des gonades chez la tortue luth (Dermochelys coriacea ); etude en incubation artificielle et naturelle
Provedor de dados: 5
Autores: Rimblot, F; Fretey, J; Lescure, J; Pieau, C.
Sexual differentiation of the marine leatherback turtle is sensitive to temperature. Incubation of eggs below 29 degree C results in 100% males, whereas incubationa bove 30 degree C results in 100% potential females at hatching. Therefore, the threshold temperature lies between 29 and 30 degree C as has been found for other marine turtles (Caretta caretta, Chelonia mydas ). Among hatchlings from natural nests in French Guiana, 10% were males, 20% were potential females and 70% had an intermediate phenotype. The sand temperature at 60 cm of depth, near one nest, was recorded and was found to vary between 29 and 30 degree C during the presumed thermosensitive period. These results will be useful to marine turtle hatcheries which seek to manipulate sex ratios...
Tipo: Text
Palavras-chave: Dermochelys coriacea; Chelonia mydas; Reptilia; Hatcheries; Natural populations; Incubation; Turtle culture; Eggs; Temperature effects; Sexual dimorphism.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/acte-1241.pdf

The measurements of nutrient fluxes at the water-sediment interface : incubation methods (in laboratory and in situ) ; gradient method (calculated fluxes) ; benthic ecosystem tunnel
Provedor de dados: 5
Autores: Feuillet-girard, Michelle; Gouleau, Dominique; Zurburg, Wouter; Small, A. C.; Dankers, N.; Heral, Maurice.
Many flux measurements methods have been described in the literature. The purpose of our study was to compare results obtained by these different methods : gradient method, incubation method (Laboratory and in situ), benthic ecosystem tunnel. The field experiment has been performed in the Marennes Oleron Bay since May 1991 (Contrat C. E. E. FAR)
Tipo: Text
Palavras-chave: Nutrient fluxes; Measurements; Methods; Incubation; Benthic ecosystem tunnel; Marennes Oleron; Charente Maritime.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00102/21304/18923.pdf

Fécondité de Nephrops norvegicus dans le golfe de Gascogne
Provedor de dados: 5
Autores: Morizur, Yvon; Conan, Gérard; Guenole, A.; Omnes, Marie-helene.
Females of the Norway lobster Nephrops norvegicus (L.) incubate their eggs under the abdomen for a period of several months. The authors estimated the individual fecundity of N. norvegicus (1) before spawning, and (2) at the end of the incubation period. From these two relationships, they then calculated the average egg loss. Egg loss seems to be relatively higher for small females than for large ones. The mean egg loss estimated for the Bay of Biscay (45%) differs from the only other existing value (75%) calculated by other authors for Portuguese waters. Egg loss may regulate stock-density, and may be a mechanism intervening in stock-recruitment.
Tipo: Text
Palavras-chave: Nephrops norvegicus; Crustacea; Decapoda; Nephrops; Incubation; Spawning; Sexual reproduction; Fecundity.
Ano: 1981
URL: http://archimer.ifremer.fr/doc/1981/publication-2348.pdf

Reproduction de la langoustine, Nephrops norvegicus dans la region sud Bretagne
Provedor de dados: 5
Autores: Morizur, Yvon.
The size and age at sexual maturity of the lobsters was determined by secondary sexual characteristics (1) morphological criteria such as length of P1 protopodite, size of the abdomen, and the presence or absence of ovarian hairs in the female; and (2) functional criteria such as the presence of spermatophores in the female and development of the ovaries. A study of fecundity was carried out after maturation of the ovaries and at the end of incubation. The number of eggs lost during incubation was estimated at 45%. The contribution of different age classes to the global fecundity of the stock was simulated on a model of fecundity by recruits.
Tipo: Text
Palavras-chave: Nephrops norvegicus; Reproduction; Atlantique nord est; France; Bretagne; Finistere sud; Crustacea; Decapoda; Homaridae; Nephrops norvegicus; Incubation; Dimorphisme; Spermatophore; Ovaire; Fecondite; Maturite; Reproduction sexuee.
Ano: 1980
URL: http://archimer.ifremer.fr/doc/1980/these-2338.pdf

Aquaculture of red tilapia Oreochromis sp. in marine environments: State of the art.
Provedor de dados: 5
Autores: Watanabe, W; Ernst, D; Olla, B; Wicklund, R.
The Caribbean Marine Research Centre is conducting research on the development of methods for intensive culture of euryhaline red tilapias in marine environments for application to Caribbean islands and similar regions with limited freshwater resources.
Tipo: Text
Palavras-chave: Survival; Growth; Eggs; Brood stocks; Incubation; Brackish water; Seed (aquaculture); Food conversion; Hatcheries; Controlled conditions; Diets; Floating cages; Sea water; Salinity tolerance; Intensive culture; Fingerlings.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/1989/acte-1493.pdf

Caracteristiques topographiques et thermiques d'un site de ponte majeur de la tortue verte Chelonia mydas dans l'Ocean Indien sud-ouest: Europa
Provedor de dados: 5
Autores: Le Gall, Jean-yves; Taquet, Marc; Cluet, Denis; Biais, Gerard.
The beach of the meteorological station of Europa Island (Indian Ocean S.W.) is a major nesting site for the green turtle. Altimetric distribution of nests on the beach is such than 95 % of nests are laid in the band located between 1.25 and 3 m above the mean level of upper tides. Nest density is a function of adult females number and varies from 0.175 to 0.043 nest/m2 for the two analyzed nesting seasons. Ground temperatures at 60 cm and 100 cm depth range from 22 (winter) to, 30°C (summer). Interannual variability of ground temperature at same depth (incubation depth) is 1.5° C from extreme hot to cold years. These intra and interannual variations are supposed to have an effect upon the sex-ratio of hatchlings
Tipo: Text
Palavras-chave: Tortue verte; Chelonia mydas; Ponte; Distribution; Température; Incubation; Green turtle; Chelonia mydas; Nest; Distribution; Temperature; Incubation.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00113/22407/20104.pdf

Setting of a procedure for experimental incubation of Pacific oyster (Crassostrea gigas) embryos
Provedor de dados: 5
Autores: Suquet, Marc; Amourda, Christopher; Mingant, Christian; Queau, Isabelle; Lebrun, Luc; Brizard, Raphael.
Standardized experimental protocols designed to study Pacific oyster (Crassostrea gigas) gamete quality have not been previously published. Gamete sampling variations and confounding effect of interacting factors result in large variations between replicates, decreasing the effects of the studied factors. This work aims at defining a standardized procedure for incubation of oyster embryos designed for experimental purposes.   In a first phase, four experiments were developed to improve embryo sampling and handling. They showed that a minimum of 50 embryos must be counted to decrease the variation between counting replicates. For reliable results, sampling must be carried out from 0 to 7 min after a careful agitation of seawater containing embryos...
Tipo: Text
Palavras-chave: Crassostrea gigas; Pacific oyster; Experimental; Embryo; Incubation.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/publication-3593.pdf

Effect of incubation time and concentration of animals in grazing experiments using a narrow size range of particles
Provedor de dados: 27
Autores: Tackx, M.; Polk, P.
Three concentrations of &lt;i&gt;A. tonsa&lt;/i&gt; adults were allowed to feed on a narrow size range suspension of particles. Sampling was done at 4-hour intervals during 24 hours. It is shown that both animal concentration and incubation time considerably influence the obtained ingestion rates and filtering-spectra. These results are discussed in relation to different calculation methods and models.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grazing; Incubation.
Ano: 1986
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3192

LIMITES E OPORTUNIDADES PARA OS AGRICULTORES FAMILIARES INTEGRANTES DE EMPREENDIMENTOS ECONÔMICOS SOLIDÁRIOS NO ASSENTAMENTO ANTÔNIO CONSELHEIRO EM TANGARÁ DA SERRA – MT
Provedor de dados: 31
Autores: Laforga,   Gilmar; Pommer,   Adriana Vanderlei.
Esta pesquisa identificou os limites e oportunidades para os agricultores familiares integrantes dos Empreendimentos situados no campo da Economia Solidária (EES), a partir do estudo das ações incubadoras realizadas no Assentamento Antônio Conselheiro, Tangará da Serra/MT. Inicialmente foram realizadas visitas aos agricultores envolvidos nos empreendimentos, no sentido de melhor conhecer o processo de incubação ali realizado. A seguir, foram desenvolvidos esforços para tentar compreender as dificuldades e oportunidades percebidas pelos integrantes dos empreendimentos, o significado particular da economia solidária e da incubação. Entre as oportunidades apontadas destacam-se: a geração de trabalho e renda, a conquista de mercado para seus produtos e a maior...
Tipo: Conference Paper or Presentation
Palavras-chave: Empreendimentos de Economia Solidária; Agricultura Familiar; Limitações; Oportunidades; Incubação; Enterprises of Solidary Economy; Family Agriculture; Limitations; Opportunities; Incubation; Farm Management.
Ano: 2008
URL: http://purl.umn.edu/108887

Analysis of Water in the Chicken Eggshell Using the 1H Magic Angle Spinning Nuclear Magnetic Resonance Spectroscopy
Provedor de dados: 89
Autores: Szeleszczuk,Ł; Pisklak,DM; Wawer,I.
ABSTRACT The water content of the chicken eggshell has a major influence on gas (CO2 and O2) permeability. Inappropriate water loss during the incubation period increases embryo mortality and decreases chick quality. So far only the procedures that enable to determine the total water content in the eggshell have been described and developed. Our analysis of the 1H MAS NMR spectra of the chicken eggshell samples revealed three signals, differing significantly in the chemical shift and relaxation times (T1) parameters. In this work we have assigned those signals and described the changes in their intensities that occur during the incubation period. Using 1H MAS NMR it is possible to distinguish two types of water reservoirs in the chicken eggshell. This...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Water; Chicken eggshell; NMR; Incubation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600027

Effect of egg storage length on hatchability and weight loss in incubation of egg and meat type Japanese quails
Provedor de dados: 89
Autores: Romao,JM; Moraes,TGV; Teixeira,RSC; Cardoso,WM; Buxade,CC.
The quail raising in Brazil has increased through the last years and the incubation procedures are important to maintenance and improvement of quail egg production. To obtain a sufficient number of eggs to fill an incubator, eggs are usually accumulated in storage over a period from 1 day up to 3 weeks before incubation. The objective of this research was to verify the effect of egg storage on hatchability and egg weight loss for two lineages of Japanese quails. Sixty four Japanese quails were divided in two groups: G1 (n=32) for meat production and G2 (n=32) for egg production. They were used for serial egg collections that were performed every day, during 15 consecutively days, totaling 600 eggs. After collection they were placed in refrigerated room...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg weight loss; Incubation; Japanese quail; Storage.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300001

Effect of breeder age on eggshell thickness, surface temperature, hatchability and chick weigh
Provedor de dados: 89
Autores: Gualhanone,A; Furlan,RL; Fernandez-Alarcon,MF; Macari,M.
Two experiments were carried out to study the effect of breeder age on incubation parameters (hatchability, eggshell thickness, egg surface temperature and chick weight). In Exp. 1, fertile eggs (30- and 60-wk-old breeders) were incubated at three different temperatures (36.8, 37.8 and 38.8 ºC). Eggshell surface temperature was measured by attaching a thermocouple to the shell and data were collected in a datalogger every ten minutes. This study was conducted according to a 3 x 2 factorial design (three temperatures and two breeder ages). Data revealed that eggshell surface temperature changed according to incubation temperature, with the main increase occurring between 10 and 13 days of incubation, and that the maximum increase in eggshell surface...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeder; Development; Embryo; Temperature; Incubation.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100002

Hatching distribution and embryo mortality of eggs laid by broiler breeders of different ages
Provedor de dados: 89
Autores: Almeida,JG; Vieira,SL; Reis,RN; Berres,J; Barros,R; Ferreira,AK; Furtado,FVF.
This study investigated the hatching distribution of eggs from broiler breeders of different ages in distinct periods of incubation. Eggs were incubated in a single-stage experimental incubator. A number of 3.510 eggs were distributed into 3 treatments with 13 replicates of 90 eggs each. Treatments corresponded to breeder age: young (34 weeks), intermediate-age (44 weeks) and old (72 weeks) breeders. Eggs were transferred to the hatcher at 432 incubation hours, hatching was first checked at 449 hours, after which the number of hatched chicks was counted every 6 hours up to 515 incubation hours. After each count, hatched chicks were removed from the hatcher. Data were submitted to analysis of variance using measures repeated. A significant interaction...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler chicks; Embryo mortality; Incubation; Post-hatching management.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000200003

Effect of temperature on incubation period, embryonic mortality, hatch rate, egg water loss and partridge chick weight (Rhynchotus rufescens)
Provedor de dados: 89
Autores: Nakage,ES; Cardozo,JP; Pereira,GT; ,SA; Boleli,IC.
The aim of this study was to determine the effects of incubation temperature (34.5; 35.5; 36.5; 37.5 and 38.5ºC), on incubation period, embryonic mortality, hatching rate, water loss and chick weight at hatch, using daily incubation of partridge (Rhynchotus rufescens) eggs. The highest hatching percentage was obtained between 35.5 and 36.5ºC. Incubation length and temperature were inversely proportional. Water loss was lower in eggs incubated at low temperatures as compared to high temperatures. There was no difference among incubation temperatures in absolute and relative hatchling weights. Early embryonic mortality increased at low temperatures (&lt;35.5ºC), whereas intermediate and late embryonic mortality increased at high temperatures (&gt;36.5ºC)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Incubation; Hatchability; Mortality; Temperature; Water loss.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000200007

Storage Period Affects Weight Loss of Japanese Quail Eggs
Provedor de dados: 89
Autores: Roriz,BC; Sgavioli,S; Garcia,RG; Nääs,IA; Domingues,CHF; Caldara,FR; Rombola,LG; Ayla,CM; Bernnecke,K.
ABSTRACT Long storage periods may increase embryo mortality. The objective of this study was to evaluate the effects of storage period on the weight loss, eggshell surface temperature, hatchability, and embryonic mortality of Japanese quail eggs. Two hundred fertile eggs were collected from a flock of 30-week-old Japanese quails (Coturnix coturnix japonica). The eggs were collected for 10 consecutive days after lay, and immediately incubated. A completely randomized experimental design with 10 treatments, corresponding to the number of days eggs were stored between egg collection and setting, with 20 replicates each, was applied. Egg weight loss increased with storage period duration, starting on day 6 (2.1%, on average) and reached 3.26%, on average, in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Embryo; Hatchability; Incubation; Laying; Temperature.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400589

Meeting embryonic requirements of broilers throughout incubation: a review
Provedor de dados: 89
Autores: Molenaar,R; Reijrink,IAM; Meijerhof,R; Van den Brand,H.
During incubation of chicken embryos, environmental conditions, such as temperature, relative humidity, and CO2 concentration, must be controlled to meet embryonic requirements that change during the different phases of embryonic development. In the current review, the effects of embryo temperature, egg weight loss, and CO2 concentration on hatchability, hatchling quality, and subsequent performance are discussed from an embryonic point of view. In addition, new insights related to the incubation process are described. Several studies have shown that a constant eggshell temperature (EST) of 37.5 to 38.0°C throughout incubation results in the highest hatchability, hatchling quality, and subsequent performance. Egg weight loss must be between 6.5 and 14.0%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler embryos; CO2 concentration; Incubation; Relative humidity; Temperature.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300001

The Effect of Eggshell Thickness on the Hatchability of Guinea Fowl and Pheasants
Provedor de dados: 89
Autores: Yamak,US; Boz,MA; Ucar,A; Sarica,M; Onder,H.
ABSTRACT Successful incubation affects the number of healthy chicks in all poultry species. This study examined the effect of eggshell thickness on the hatching rates of guinea fowl and pheasant eggs. In total, 964 guinea fowl and 1,728 pheasant eggs were used in the study. Eggshell thickness was measured directly with an ultrasound gauge. Thicknesses ranged between 0.27-0.47 mm in guinea fowl and 0.24-0.49 mm in pheasant eggs. Incubation periods were 28 days for guinea fowl and 25 days for pheasant eggs. At the end of the incubation period, unhatched eggs were broken to identify the causes of embryonic mortality. Eggs were classified as thin-, medium- and thick-shelled, and hatching rates were calculated as a function of eggshell thickness. Differences in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggshell thickness; Ultrasound; Incubation; Guinea fowl; Pheasant.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600049

Influence of egg pre-storage heating period and storage length on the digestive tract of newly-hatched broiler chicks
Provedor de dados: 89
Autores: Silva,FHA; Faria,DE; Torres,KAA; Faria Filho,DE; Coelho,AAD; Savino,VJM.
An experiment was carried out to evaluate the effect of different heating times of settable eggs of Cobb 500® broiler breeders before submitting them to different storage periods on body weight, digestive tract organ weights, and intestinal mucosa morphology of newly-hatched chicks. Settable eggs were distributed in a completely randomized experimental design with a 3 x 3 factorial arrangement: pre-storage heating periods (0, 6, 12 hours at 36.92°C) and storage periods (4, 9, 14 days at 12.06°C). Body weight and relative weights of the yolk sac, heart, liver, proventriculus+gizzard, and intestinal segments were measured in chicks hatching at 480 and 498 hours of incubation. Villi height, width and perimeter, and crypt depth (ìm) were measured in duodenal...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broilers; Embryo development; Incubation; Intestinal mucosa; Morphometrics.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100004

The Effect of Eggshell Thickness on Hatching Traits of Partridges
Provedor de dados: 89
Autores: Yamak,US; Sarica,M; Boz,MA; Ucar,A.
ABSTRACT Incubation is an important factor in poultry production, particularly in species with relatively low fertility and hatchability rates. This study examined the effect of eggshell thickness on hatching traits of partridges (A. chukar). A total of 462 eggs from intensively reared partridges were separated into three groups according to eggshell thickness, which was measured ultrasonically before incubation. Hatchability, chick weight, and chick length were assessed at the end of the incubation period. Hatching times were recorded during hatching. Embryonic mortalities in unhatched eggs were classified according to mortality stage at the end of incubation. The effect of eggshell thickness on hatchability was found to be insignificant for all groups....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eggshell thickness; Partridge; Incubation; Ultrasound; Hatching time.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000500013

Effect of storage period and egg weight on embryo development and incubation results
Provedor de dados: 89
Autores: Schmidt,GS; Figueiredo,EAP; Saatkamp,MG; Bomm,ER.
A total number of 300 females and 30 males of two experimental broiler lines, TT (male) and PP (female), with 39 and 36 weeks of age, respectively. Experiment 1 (TT) evaluated the effect of storage time (ST) on hatchability and embryo mortality (EM). Eggs were stored for 2 (ST1), 4 (ST2), 6 (ST3), 8 (ST4), 10 (ST5), 12 (ST6), and 24 (ST7) days and EM was assessed in the periods of 0 to 6 (EM1), 7 a 13 (EM2), 14 to 17 (EM3), 18 to 21 (EM4), and 0 to 21 (TEM) days. Experiment 2 (PP) evaluated the effect of egg weight (EW) on embryo development. Eggs were individually collected and weighed. Embryos were collected and weighed on days 9 (EW9), 11 (EW11), 13 (EW13), EW15, 17 (EW17) days of incubation and at hatching (EW21). ST linearly influenced hatchability...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chick weight; Broiler breeders; Embryo development; Embryo mortality; Egg weight; Incubation.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100001

What determines hatchling weight: breeder age or incubated egg weight?
Provedor de dados: 89
Autores: Traldi,AB; Menten,JFM; Silva,CS; Rizzo,PV; Pereira,PWZ; Santarosa,J.
Two experiments were carried out to determine which factor influences weight at hatch of broiler chicks: breeder age or incubated egg weight. In Experiment 1, 2340 eggs produced by 29- and 55-week-old Ross® broiler breeders were incubated. The eggs selected for incubation weighed one standard deviation below and above average egg weight. In Experiment 2, 2160 eggs weighing 62 g produced by breeders of both ages were incubated. In both experiments, 50 additional eggs within the weight interval determined for each breeder age were weighed, broken, and their components were separated and weighed. At hatch, hatchlings were sexed and weighed, determining the average initial weight of the progeny of each breeder age. Data were analyzed using the Analyst program...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Albumen; Eggshell; Hatchling weight; Incubation; Yolk.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400011

Impacts of Breeder Age, Storage Time and Setter Ventilation Program on Incubation and Post-Hatch Performance of Broilers
Provedor de dados: 89
Autores: Okur,N; Eleroğlu,H; Türkoğlu,M.
ABSTRACT The impacts of breeder age (32 and 55 weeks), egg storage time (2-12 days), setter ventilation program (control-test) on incubation and post-hatch performance of broilers were investigated in this study. Young (Y) and old (O) breeders’ hatching eggs were incubated in two different setters operated by two different ventilation programs as control (C) and test (T). Incubation took place after a short (S) and long (L) time of storage in this study. According to the trial design, eight treatment groups were as YSC, YST, YLC, YLT, OSC, OST, OLC and OLT. In total 9600 eggs and 6400 chicks were used. Early stage embryonic mortality (ED) rates were lower and accordingly hatchability of fertile eggs (HF) were higher (p&lt;0.05) in YS than the other...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeder age; Broiler; Egg storage; Incubation; Setter ventilation program.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000100027

Effect of Thermal Embryonic Manipulation on the Quality of Male and Female Broiler Meat Submitted to Thermal Stress Pre-Slaughter
Provedor de dados: 89
Autores: Fernandes,JIM; Santos,TC; Kaneko,IN; Horn,D; Leyter,JR; Pasa,CLB.
ABSTRACT Adverse environmental conditions during rearing may negatively affect productivity and meat quality of the modern fast-growing broiler strains. Temperature manipulation during sensitive embryonic development periods may affect broilers' physiological responses to environmental conditions during rearing on commercial farms. The objective of this trial was to evaluate the effect of temperature manipulation during incubation and breeder age on the meat quality of male and female broilers submitted to heat stress during the pre-slaughter period. In this experiment, 1280 broiler chicks were distributed according to a completely randomized experimental design in a 2x2x2 factorial arrangement. Treatments consisted of two breeder ages (30 and 60 weeks),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adaptation; Epigenetic; Incubation; Thermoregulation.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200343

Effects of Incubator Carbon Dioxide and Oxygen Levels, and Egg Weight on Broilers’ Hatchability of Fertile Eggs
Provedor de dados: 89
Autores: Okur,N.
ABSTRACT This study investigated the effects of incubator carbon dioxide (CO2) and oxygen (O2) levels, and egg weight (EW) on embryo mortality (EM) and hatchability of fertile eggs (HFE). A total of 1920 hatching eggs were obtained from a middle-aged (41 weeks) ROSS 308 broiler breeder flock. The eggs were classified according to EW as heavy (69.63 ± 0.09 g), medium (65.20 ± 0.04 g) and light (61.11 ± 0.08 g) and randomly allocated to four separate identical incubators. To these incubators, four different incubator ventilation programmes (IVP) classified as control (C; 0.7% CO2 and 20.9% O2), high CO2 (HC; 1.1% CO2 and 20.3% O2), high O2 (HO; 0.6% CO2 and 22.0% O2), and high CO2 + O2 (HCO; 0.9% CO2 21.0% O2) were applied, and EM and HFE were examined. IVP...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler; Carbon dioxide; Egg weight; Incubation; Oxygen.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000300310

Humic Substances and Chemical Properties of an Acrisol Amended with Vermicomposted Vegetal and Animal Residues
Provedor de dados: 90
Autores: Antunes,Rul Martins; Leal,Otávio dos Anjos; Castilhos,Rosa Maria Vargas; Castilhos,Danilo Dufech; Andreazza,Robson; Schwalbert,Raí Augusto.
ABSTRACT Vermicomposted vegetal and animal residues are rich in nutrients and humic substances and thus can be applied to the soil as a source of functionalized organic matter (OM) and as an alternative to chemical fertilizers. In Southern Brazil, many animal and vegetal residues are easily accessible. Therefore, this study aimed to evaluate alterations in soil chemical properties and OM chemical composition in response to the application of local vermicomposted residues. The vermicomposts of: cattle manure (CM), sheep manure (SM), rice parboiling sludge (PS), CM+PS; SM+PS; CM+food waste (FW); SM+FW; CM+fruit waste (FRW); and SM+FRW were mixed with Acrisol (Argissolo) samples collected at 0.00-0.20 m layer, and the samples were incubated in plastic bags...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Incubation; Infrared spectroscopy; Elemental analysis; Polarity index.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100403

Blood metabolites as predictors to evaluate the body condition of Neopelma pallescens (Passeriformes: Pipridae) in northeastern Brazil
Provedor de dados: 103
Autores: Azeredo,Luane M.M.; Oliveira,Talita C.; Lopez,Luiz C.S.
ABSTRACT Body condition is an important ecological attribute that can provide a measure of the energy stored by an animal or population. Body condition is traditionally ascertained with morphometric body condition indices (BCIs), but some researchers have used various physiological and biochemical parameters as predictors of body condition. This study aimed to test reliable biochemical predictors of body condition in individuals of Neopelma pallescens (Lafresnaye, 1853), found in an Atlantic forest patch. For this purpose we examined the relationship between body condition and the concentrations of blood glucose and ketones. We also verified correlations between blood metabolite concentrations and ecological variables, including time of day, seasons,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Birds; Ectoparasitism; Glucose; Incubation; Ketones.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000600901

Nesting of Phrynops geoffroanus (Testudines: Chelidae) on sandy beaches along the Upper Xingu River, Brazil
Provedor de dados: 103
Autores: Ferreira Júnior,Paulo D.; Balestra,Rafael A. M.; Moreira,José R.; Freitas,Fábio de O.; Lustosa,Ana P. G.; Jorge,Rafael F.; Rosa,Artur J. de M.; Sampaio,Antônio A.; Gomes,Aline S.
This work presents the first data on incubation temperature of Phrynops geoffroanus (Schweigger, 1812) in a natural environment, and provides information on nest predation, hatching success and size of offspring born in the nests on sandy beaches along the Upper Xingu River. Thirty-one P. geoffroanus nests were found, of which eleven were completely predated, mainly by Cerdocyon thous (Linnaeus, 1766). Incubation was completed in nine out of the 17 nests protected by netting. The nests presented an average of 13.1 eggs and were distributed over the various geomorphological sectors of the nine sampled beaches. The size and weight of the hatchlings varied significantly between nests, and the incubation period in protected nests lasted for 76.5 days, less...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geoffroy's side-necked turtle; Hatching success; Incubation; Nest predation; Xingu Indigenous Park.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000500004

Pivotal temperature and sexual dimorphism of Podocnemis expansa hatchlings (Testudines: Podocnemididae) from Bananal Island, Brazil
Provedor de dados: 103
Autores: Lubiana,Adélio; Ferreira Júnior,Paulo Dias.
A common problem when trying to identify the sex of hatchling turtles is that juveniles are not obviously externally dimorphic and current techniques to identify sex are often invasive. In this paper, 300 eggs of Podocnemis expansa from Bananal Island, state of Tocantins (Brazil), were incubated at constant temperatures. The carapaces of the hatchlings were photographed and subjected to geometric morphometric analysis. The hatchlings were subsequently euthanized and had their gonads removed for sex determination. The pivotal temperature of P. expansa was 33.5ºC, confirming that this species has the highest pivotal temperature among reptiles. Geometric morphometric analysis of the shape of the carapace proved efficient in differentiating the sex of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carapace; Incubation; Morphometry; Sex ratio; Giant Amazon River turtle.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000300016

Environmental conditions in broiler multi-stage setter: a case study
Provedor de dados: 63
Autores: Gigli,Ana Carolina de Souza; Baracho,Marta dos Santos; Nääs,Irenilza de Alencar; Salgado,Douglas D'Alessandro; Alvarenga,Débora Passos.
Production of one day-old chick production is one of the most important segments in the poultry production business. Broiler chicken incubation environment needs to be homogeneous and adequate so hatchability and final product quality are not affected. This research aimed at evaluating environmental conditions inside a multi-stage setter in a commercial hatchery house. The incubator was split into six areas and data loggers placed in the geometric center to register temperature and relative humidity data; carbon dioxide concentration and number of colony forming units (CFU) of fungi were also sampled and analyzed; Kruskal-Wallis non-parametric test was used for statistical analysis; significant differences in temperature and relative humidity distribution...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Poultry; Incubation; Environment.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000200001

Incubação artificial dos ovos e processo de eclosão em Trachemys dorbignyi (Duméril &amp;amp; Bibron) (Reptilia, Testudines, Emydidae)
Provedor de dados: 104
Autores: Molina,Flavio de Barros; Gomes,Norma.
Artificial incubation of 558 eggs from 70 clutches of Trachemys dorbignyi (Duméril &amp;amp; Bibron, 1835) were performed at São Paulo Zoo during 1992 and 1993. Hatching occurred when eggs were incubated between 25 and 31.5oC. Incubation time varied from 54 (at 31.5oC) to 120 days (at 25oC), similarly to Trachemys scripla sspp. Hatchling used the caruncle to made small incisions in the egg shell, latter enlarged by movements of the head and forefeet. Hatching usually lasted from one to two days. Newborn's carapace and plastron showed their natural form few hours after the emergence from the egg shell. During the third or fourth week, caruncle usually disappeared, and yolk sac was completely absorbed. Average (x±sd) measures of newborn were 3.55±0.18cm of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trachemys dorbignyi; Testudines; Emydidae; D'Orbigny's slider turtle; Incubation; Hatching process; Newborn.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751998000100011

Comparison of methods to quantify soil microbial biomass carbon
Provedor de dados: 1
Autores: Moura, Rafael Thomaz de Aquino; Carrido, Marlon da Silva; Sousa, Carla da Silva; Menezes, Rômulo Simões Cezar; Sampaio, Everardo Valadares de Sá Barretto.
 Soil microorganism biomass is an important soil quality indicator. The microbial biomass of soil was determined by killing and lysing the soil microbes by fumigation with chloroform, irradiation with gamma rays, or irradiation with microwaves. Four soils with increasing carbon concentrations (5, 10, 15, and 30 g kg-1) were analyzed using four methods: the direct application of chloroform, chloroform fumigation, microwave irradiation, and gamma ray irradiation with radiation doses of 15, 25, 35, 45, and 60 KGy. The fungi and bacteria in the soil were quantified by plate counting. Microwave irradiation and gamma irradiation with doses equal to or above 25 KGy killed all the soil microorganisms, but the chloroform methods did not. The carbon liberation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Agronomia  ciência do solo microwave; Gamma irradiation; Fumigation; Incubation; Microbial carbon. biomassa microbiana do solo.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39451

Comparison of methods to quantify soil microbial biomass carbon
Provedor de dados: 1
Autores: Moura, Rafael Thomaz de Aquino; Carrido, Marlon da Silva; Sousa, Carla da Silva; Menezes, Rômulo Simões Cezar; Sampaio, Everardo Valadares de Sá Barretto.
 Soil microorganism biomass is an important soil quality indicator. The microbial biomass of soil was determined by killing and lysing the soil microbes by fumigation with chloroform, irradiation with gamma rays, or irradiation with microwaves. Four soils with increasing carbon concentrations (5, 10, 15, and 30 g kg-1) were analyzed using four methods: the direct application of chloroform, chloroform fumigation, microwave irradiation, and gamma ray irradiation with radiation doses of 15, 25, 35, 45, and 60 KGy. The fungi and bacteria in the soil were quantified by plate counting. Microwave irradiation and gamma irradiation with doses equal to or above 25 KGy killed all the soil microorganisms, but the chloroform methods did not. The carbon liberation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microwave; Gamma irradiation; Fumigation; Incubation; Microbial carbon.; Biomassa microbiana do solo.
Ano: 2018
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/39451

Investigating the performance of polyester microfibers in situ bags using different weft yarn count and density
Provedor de dados: 2
Autores: Hanafy, Doaa Elgohary; Hamoda, Dina Mohamed; Khattab, Ibrahim Mohamed; Aboamer, Ahmed Abdelkader.
Microfiber fabrics are more efficiency in retaining fine-particles that increase the variation in in situ degradability. The aim of this was to examine the performance of in situ bags made from different microfiber fabric for meeting the required specification and their ruminal degradability compared with standard Ankom in situ bags. Four fabrics were manufactured using polyester microfiber with 1.04 denier, weft yarn counts (150 and 300), weft density (22 and 28 picks / inch), plain 1/1 textile structure. Physical and mechanical properties of manufactured fabrics were measured before and after incubation. Ruminal degradability was measured for three feedstuffs (soybean meal, wheat bran and berseem hay) using three rumen-fistulated rams as a replicates...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ankom bags; Fabric; Feedstuffs; Incubation; Nutrient; Pore size. ankom bags; Fabric; Feedstuffs; Incubation; Nutrient; Pore size.
Ano: 2020
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/48478

Inoculação de maltose, sacarose ou glicose em ovos embrionados de baixo peso - DOI: 10.4025/actascianimsci.v32i1.5910
Provedor de dados: 2
Autores: Leitão, Rodrigo Afonso; CEFET-UBERABA; Leandro, Nadja Susana Mogyca; Stringhini, José Henrique; Café, Marcos Barcellos; Andrade, Maria Auxiliadora.
Objetivou-se avaliar a suplementação com diferentes carboidratos e o local de inoculação em ovos de baixo peso. Para isso foram avaliados os parâmetros de incubação, biometria do trato gastrintestinal,  morfometria intestinal e o desempenho de pintos de corte. O delineamento foi em blocos casualizados, com cinco tratamentos e 120 repetições para a incubação e quatro tratamentos e dez repetições para os demais parâmetros avaliados. Os tratamentos consistiram no ovo íntegro; ovo inoculado na cavidade alantoide por meio da câmara de ar; ovo inoculado na cavidade alantoide com solução de maltose, ou sacarose ou de glicose.  Os tratamentos de um a 21 dias de idade foram realizados com as aves provenientes dos ovos inoculados com as soluções na cavidade...
Palavras-chave: Zootecnia/Produção animal Carboidratos; Incubação; Matrizes jovens; Pintos de baixo peso; Suplementação “in ovo” Carbohydrates; Incubation; Young breeders; Low-weight chicks; In ovo feeding.
Ano: 2009
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/5910

Soil microbial response to glucose and phosphorus addition under agricultural systems in the Brazilian Cerrado
Provedor de dados: 42
Autores: FERREIRA,ADÃO S.; SANTOS,MARIA AMELIA DOS; CORRÊA,GILBERTO F.
Conventional tillage (CT) and no-tillage (NT) management systems alter soil nutrient availability and consequently modify soil microbial response to nutrient additions such as carbon (C) and phosphorus (P). The objective of this study is to evaluate microbial response to the addition of C (glucose) and P (Na2HPO4.7H2O) under CT and NT in the brazilian Cerrado. In response to glucose addition, the NT system yielded higher microbial respiration rates and glucose consumption than the CT system. The best microbial response to C addition was after 0 - 12 h incubation in NT and 0 - 24 h in CT. The addition of P produced higher demand under CT than NT. After incubation, biochemical indicators such as microbial respiration, glucose consumption, dehydrogenase...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dehydrogenase; Glucose assay; Michaelis-Menten equation; Nutrient demands; Incubation.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000100395

Efeitos do horário de postura de matrizes pesadas sobre o rendimento de incubação
Provedor de dados: 45
Autores: Barbosa,V.M.; Rocha,J.S.R.; Pompeu,M.A.; Fernandes,M.N.S.; Machado,A.C.; Cunha,C.E.; Cardeal,P.C.; Ruiz,L.E.A.; Lara,L.J.C.; Baião,N.C.
The effects of oviposition time, which represents different positions of the follicles in a sequence of posture, were studied on egg weight, chick weight, egg weight loss during incubation, hatchability, embryo mortality and infertility . A total of 19, 820 eggs, layed on the same day, from Cobb® broiler breeders aging 46-week-old were used. The eggs were classified according to the oviposition time posture (corresponding to the time of collection) from 8:30 am, 10:30 am, 12:30 pm, 14:30 pm and 16:30 pm, which represented the folowing treatments: 1st, 2nd, 3rd, 4th and 5th collects, respectively. The experimental design was completely randomized with five treatments and 36 repetitions, and each tray of 96 eggs was considered a repetition. The normal and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler breeders; Embryo development; Incubation; Time of laying.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000400045

Thermic Variation in Incubation and Development of Pantanal Caiman (Caiman crocodilus yacare) (Daudin, 1802) Kept in Metabolic Box
Provedor de dados: 52
Autores: Miranda,Maristela Parra; Moraes,Gentil Vanini de; Martins,Elias Nunes; Maia,Luis Carlos Pinto; Barbosa,Orlando Rus.
Thirty-two eggs of Pantanal caiman (Caiman crocodilus yacare) (Daudin, 1802) were incubated at 30° C. After 20 days of incubation at 30° C, the remaining eggs were distributed in the following way: seven at 34° C, seven at 32° C, six at 30° C and six at 28° C. At 32° C and 34° C a 100% hatchability was obtained while at 30° C 83.3% and at 28° C 66.6%. After hatching, the animals were kept for 120 days at the same temperature of their final incubation. Weight (g) control and morphometric (cm) analysis were carried out. The statistic design was totally randomized and the data were treated by regression analysis showing a quadratic behavior ( p&lt;0.05). It was found that weight, total length (TTL), tail length (TL), snout- vent length (SVL), head length...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Caiman; Development; Incubation; Temperature; Thermic variation.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000300012

In vitro fermentation of corn silage using rumen fluid buffered or not and different sample amounts
Provedor de dados: 65
Autores: Homem Junior,Antonio Carlos; Ezequiel,Jane Maria Bertocco; Perez,Henrique Leal; Almeida,Marco Tulio Costa; Paschoaloto,Josimari Regina; Carvalho,Vanessa Barbosa de; Cremasco,Leonardo Fernandes; Costa,Macella Borsonello da.
Methodological variations in the amount of sample incubated and the type of rumen fluid used are commonly observed. This study evaluated the effect of three sample amounts (0.6, 1.3 or 2.6g DM 100mL-1 of rumen fluid) incubated in rumen fluid buffered (BRF-buffered rumen fluid) or not (PRF-pure rumen fluid) on total gas volume (TV), methane (CH4) production, dry matter degradation (DM Deg) and final pH of corn silage incubated in vitro. The highest DM Deg was reached with the lowest amounts of sample (0.6 and 1.3g of DM 100mL-1 of rumen fluid). The sample amount of 2.6g associated with PRF reduced CH4 production (P&lt;0.05), compared with the amounts of 0.6 and 1.3g DM 100mL-1, which had similar CH4 production (P&gt;0.05). The use of BRF caused no effect on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Degradation; Gas; Incubation; Methane; PH.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001202229