Consulta: subjectFacets:"Egg"
Registros recuperados: 33
Data/hora: 06/06/2024 07:29:16

Estimación de un modelo econométrico simultáneo para el mercado de huevo en México (1960-2007).
Provedor de dados: 32
Autores: Guillén Alvarado, Rosa Angélica.
En este trabajo consiste en realizar una predicción de precios del huevo en México con datos de 1960 a 2003 y posteriormente se obtuvo la predicción de precios hasta el 2007, mismo que se tomas los precios nominales del huevo y el índice nacional de precios al consumidor para calcular los precios reales y obtener la desestacionalización de los precios, posteriormente con el apoyo del programa de SAS, se establece un modelo econométrico con el que se calcula la tendencia de mejor ajuste. El modelo cuadrático tiene un buen ajuste dado por el coeficiente de determinación (R2 =0.9432)  y sus parámetros de acuerdo con la razón de t son significativos al 99% de probabilidad. Tomando en consideración la tendencia estimada, el índice estacional, el índice cíclico...
Palavras-chave: Ciclos; Huevo; Tendencia; Predicción de precios; Cycles; Egg; Trends; Price forecast; Economía; Maestría.
Ano: 2012
URL: http://hdl.handle.net/10521/1706

Stability inside hen eggs of a Salmonella enterica serovar Enteritidis bacteriophage
Provedor de dados: 69
Autores: Robeson,James; Valencia,Martina; Retamales,Julio; Borie,Consuelo.
Background: Bacteriophages are viruses that infect bacteria and therefore are widespread in nature. Those that lyse the pathogen Salmonella enterica serovar Enteritidis (SE) should be expected in niches in which this bacterium thrives, among others the avian egg. Furthermore, bacteriophages could remain viable in this milieu. Results: Upon artificially infecting hen eggs with the SE bacteriophage f18 we found that the bacteriophage titer remains stable at least for up to 144 hrs post-infection , both in yolk and albumen at 25ºC. Conclusion: Bacteriophage f18 withstands the physico-chemical conditions of the egg inner milieu and could be considered for SE-controlling measures in the poultry industry.
Tipo: Journal article
Palavras-chave: Bacteriophage; Egg; Enteritidis; Salmonella.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000400011

External morphology of the immature stages of Neotropical heliconians: X. Heliconius sara apseudes (Lepidoptera, Nymphalidae, Heliconiinae)
Provedor de dados: 76
Autores: Barão,Kim R.; Silva,Denis S.; Moreira,Gilson R. P.
ABSTRACT The biology and morphology of the immature stages of Heliconius sara apseudes (Hübner, [1813]) are still little known. External features of the egg, larvae and pupa of H. sara apseudes are described and illustrated, based upon light and scanning electron microscopy. Eggs with smooth carina, first instar larva with scaly setae, and body of second to fifth instars covered with scattered pinnacles distinguish H. sara apseudes from other heliconiine species.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Passion vine butterflies; Egg; Larva; Pupa; Tegumentary ultrastructure.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212015000400523

Review of the breeding status of birds in Rio Grande do Sul, Brazil
Provedor de dados: 76
Autores: Maurício,Giovanni N.; Bencke,Glayson Ariel; Repenning,Márcio; Machado,Diogenes Borges; Dias,Rafael A.; Bugoni,Leandro.
Information on the breeding biology of birds is essential for improving avian life-history theory and implementing sound management and conservation actions for these organisms. Comprehensive reviews of this kind of information are lacking for most Neotropical regions, including Rio Grande do Sul, the southernmost Brazilian state. Aiming to update the knowledge on the reproductive status of birds in Rio Grande do Sul, we reviewed breeding records of all potential breeding species recorded in the state using a set of predefined, restrictive criteria for accepting breeding evidences as effective. Data satisfying our criteria were available for 165 species in the literature. We also collected novel breeding information obtained in the state for an additional...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nest; Egg; Nestling; Breeding biology; Breeding records.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000200012

Problemas de casca de ovos: identificando as causas.
Provedor de dados: 14
Autores: MAZZUCO, H.; ROSA, P. S.; JAENISCH, F. R. F.
Fatores responsaveis pelo aparecimento de ma qualidade da casca; Genotipo; Idade; Alimentacao; Nutrientes relacionados com a formacao da casca; Minerais; Vitamina D3; Agua; Sanidade; Principais enfermidades infecciosas que compromentem a qualidade da casca dos ovos; Sindrome da queda de postura (EDS); Bronquite infecciosa (BI); Bacteremias; Manejo; Controlee do peso das aves; Calculo da uniformidade; No. de aves por gaiola; Programas de luz; Temperatura ambiente.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Egg; Shell; Quality.; Casca; Ovo; Qualidade.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/433727

La production chez les crustacés. Rôle dans les écosystèmes et utilisations
Provedor de dados: 5
Autores: Khmeleva, N; Goloubev, A.
This monograph is the first to state by a systematic research the rules which control the production of the organic losses in shape of eggs and exoskeletons during the life of Crustacea. The weight and the energy content of the material thrown out are the chief criteria selected to characterize the germinal production, relative to the egg-mass, and the exuvial production, relative to the organic fraction of the exoskeleton. The determination of these parameters, at the level of the organism or of the population, takes into account the systematic position of the animals, the duration of their intermolt periods, fecundity and other indices in relation to environmental factors. The loss of matter and energy with reproduction and molting(studied for different...
Tipo: Text
Palavras-chave: Energy content; Weight; Organic losses; Egg; Ecosystem; Crustacea.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/1986/rapport-1665.pdf

Le système immunitaire du bar Dicentrarchus labrax. Immunoglobulines, cellules productrices d'immunoglobulines, ontogenèse applications à une pathologie virale néonatale
Provedor de dados: 5
Autores: Breuil, Gilles.
The sea bass, Dicentrarchus labrax, has been subjected to intensive aquaculture on the Mediterranean cost for ten years. Marine fish hatcheries are key factors in the aquaculture field, and face different pathologies, especially one of viral origin (nodavirus) that could challenge their feasibility. Consequently, we have tried to provide some data on larvae and spawning stocks.   Firstly, we have studied the immunoglobulins, components of the specific humoral immunity, and their role as antibodies. On adult basses, these immunoglobulins are tetrameric molecules with high molecular weight (850 kD), made of heavy (H) - 80 kD and light (L) - 26 kD chains. In the eggs, simplest forms such as monomeric or dimeric are brought to the fore; they are located under...
Tipo: Text
Palavras-chave: Egg; Cytometry; Immunity system; Larvae; Immunoglobulin; Nodavirus; Dicentrarchus labrax; Hatchery; Ontogenese; Cytometrie; Immunoglobuline; Nodavirus; Oeuf; Larve; Nurserie; Dicentrarchus labrax.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/1997/these-1265.pdf

Extra-Renal Lesion Caused by Dioctophyma renale Eggs in an Erratic Cycle in a Dog
Provedor de dados: 77
Autores: Lemos,Luciana da Silva; Santos,Alessa Siqueira de Oliveira dos; Rodrigues,Ana Bárbara Freitas; Goulart,Maria Laudelina Vieira Seródio; Almeida,Luciano Grillo de; Silveira,Leonardo Serafim da.
A dog with multiple infection by D. renale in the abdominal cavity presented granular peritonitis with giant cells phagocytizing D. renale eggs. Hepatic and phrenic serositis associated to numerous eggs of the parasite immersed in fibrinous process were observed. Lungs presented D. renale eggs in the parenchyma, mononucleated cell infiltrates, edema, hemorrhage, congestion, atelectasia, emphysema, and thromboembolism. D. renale eggs were detected inside the center-lobular veins, auricular cavities, and superficial venous bed of the heart. These findings characterized an atypical dissemination pathway of eggs in erratic cycle.
Tipo: Journal article
Palavras-chave: Egg; Dioctophyma renale; Erratic cycle; Extrarenal parasitism; Canine.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000400008

Immature stages and phylogenetic importance of Astrapaeus, a rove beetle genus of puzzling systematic position (Coleoptera, Staphylinidae, Staphylinini)
Provedor de dados: 16
Autores: Pietrykowska-Tudruj, E.; Staniec, B.; Wojas, T.; Alexey, A.
For the first time eggs, larvae and pupae obtained by rearing are described for Astrapaeus, a monotypic West Palearctic rove beetle genus of a puzzling phylogenetic position within the megadiverse tribe Staphylinini. Morphology of the immature stages of Astrapaeus ulmi is compared to that of other members of the tribe and discussed in a phylogenetic context. Contrary to conventional systematics and in accordance with recently developed phylogenetic hypotheses based on morphology of adults, larval morphology supports the non-Quediina affiliation of Astrapaeus. Eggs and pupae provided fewer characters with putative phylogenetic signal. Under laboratory conditions, a peculiar preference for isopod prey was observed for A. ulmi. However, this could not be...
Tipo: Article / Letter to the editor
Palavras-chave: Egg; Feeding preference; Larva; Life cycle; Morphology; Phylogeny; Pupa; 42.75; 42.64.
Ano: 2014
URL: http://www.repository.naturalis.nl/record/472282

The first description of the male and egg of Syringodes rubicundus (de Haan, 1842) (Phasmida: Diapheromeridae: Necrosciinae)
Provedor de dados: 16
Autores: Bragg, P.E.
The female of Syringodes rubicundus (de Haan, 1842) (Diapheromeridae: Necrosciinae) from Borneo is redescribed, and the egg and male are described and illustrated for the first time.
Tipo: Article / Letter to the editor
Palavras-chave: Phasmida; Necrosciinae; Syringodes rubicundus; Egg; Male description; Borneo; 42.75.
Ano: 2008
URL: http://www.repository.naturalis.nl/record/273874

Morphology of the immatures and biology of Chinavia longicorialis (Breddin) (Hemiptera: Pentatomidae)
Provedor de dados: 82
Autores: Matesco,Viviana C; Schwertner,Cristiano F; Grazia,Jocelia.
Chinavia longicorialis (Breddin) is recorded only in Brazil, Argentina and Uruguay on host plants of at least three different families. Adults and nymphs were reared under standard controlled conditions (24 ± 1°C; 70 ± 10% RH; 12hL:12hD), and fed on green beans (Phaseolus vulgaris L.). Eggs and first instars of C. longicorialis are very similar to those of other species of Chinavia; however, the presence of orange maculae at the thoracic pleura is exclusive of first instars of C. longicorialis. Third to fifth instars have abdominal maculae divided by pseudo-sutures, a diagnostic feature of C. longicorialis nymphs. Light and dark morphs were observed for third, fourth and fifth instars. Head width measurements did not overlap between consecutive instars....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Green stink bug; Egg; Nymph; Mortality; Developmental time.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2009000100007

Unusual Oviposition Behavior by a Seed Feeding Bug (Heteroptera: Rhopalidae)
Provedor de dados: 82
Autores: PANIZZI,ANTÔNIO R.; HIROSE,EDSON; CHOCOROSQUI,VIVIANE R.
Jadera choprai Göllner-Scheiding (Heteroptera: Rhopalidae) feeds on the ground on mature seeds of Cardiospermum halicacabum (L.) (Sapindaceae). Laboratory observations indicated that females dug a hole of ca. 0.5 cm in the the soil with the forelegs, laid eggs, and covered them with lose soil. In artificial conditions, females buried the eggs in over 60 % of the ovipositions, and nymphs were able to reach the soil surface from eggs buried 4 cm. This oviposition behavior is rare among seed suckers heteropterans, that usually oviposit on host plants.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Insecta; Jadera choprai; Egg.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2002000300021

Early ontogenesis of the angelfish, Pterophyllum scalare Schultze, 1823 (Cichlidae)
Provedor de dados: 83
Autores: Korzelecka-Orkisz,Agata; Szalast,Zuzanna; Pawlos,Dorota; Smaruj,Izabella; Tañski,Adam; Szulc,Joanna; Formicki,Krzysztof.
This study describes the egg membrane structures of angelfish (Pterophyllum scalare), morpho-physiological changes during angelfish embryogenesis from activation to hatching under optimal conditions (28°C; pH 6.8), the developing larvae and fry, the effect of alkaline pH on the early developmental stages of the species, the relationship between food item size and fry survival. Egg membranes (thin, transparent, 1.67-2.18 µm thick) are covered by a sticky substance. The amber-coloured angelfish eggs were oval in shape, with average diameters of 1.436 and 1.171 mm, i.e., a mean volume of 1.033 ± 0.095 mm³. The survival rate of embryos and larvae kept in water with an elevated, slightly alkaline pH was very low: as few as 2% of the embryos survived, while in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg; Embryogenesis; Embryonic motorics; Larvae morphometry; Membrane structures.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000300010

LAYERS '99, PART II: REFERENCE OF 1999 TABLE EGG LAYER MANAGEMENT IN THE U.S.
Provedor de dados: 31
The National Animal Health Monitoring System (NAHMS) is sponsored by the USDA:APHIS:Veterinary Services (VS). The NAHMS Layers '99 Study was designed to provide information about the nation's layer population for education and research purposes. The USDA's National Agricultural Statistics Service (NASS) collaborated with VS to select a statistically-valid sample from 15 states for Layers '99. The 15-state target population accounted for over three-quarters of the table egg layers in the U.S. as of December 1, 1998. The study was limited to companies with 30,000 or more layer. About two-thirds (68.1 percent ) of farm sites did not allow visitors that did not have a business reason for visiting the operation in the layer houses. The percentage of farm sites...
Tipo: Report
Palavras-chave: NAHMS; Layer; Layers; Layer house; Poultry; Pullet; Flock; Egg; Table egg; Lay; Biosecurity; Feeder; Visitor; Morbidity; Disease; Disinfect; Salmonella enteritidis; S.E.; Management; Molt; Production; Livestock Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/32765

LAYERS '99, PART I: REFERENCE OF 1999 TABLE EGG LAYER MANAGEMENT IN THE U.S.
Provedor de dados: 31
The National Animal Health Monitoring System (NAHMS) is sponsored by the USDA:APHIS:Veterinary Services (VS). The NAHMS Layers '99 Study was designed to provide information about the nation's layer population for education and research purposes. The USDA's National Agricultural Statistics Service (NASS) collaborated with VS to select a statistically-valid sample from 15 states for Layers '99. The 15-state target population accounted for over three-quarters of the table egg layers in the U.S. as of December 1, 1998. The study was limited to companies with 30,000 or more layers. While the majority of farm sites were contract farms (61.0 percent), the majority of birds were located on company owned farms (72.6 percent), indicating that company owned farms...
Tipo: Report
Palavras-chave: NAHMS; Layer; Layers; Poultry; Pullet; Flock; Egg; Table egg; Lay; Molt; Cage; Contract farm; Coccidiosis; Newcastle disease; Infectious bronchitis; Salmonella enteritidis; S.e.; Competitive exclusion; Laryngotracheitis; LT; Mycoplasma gallisep; Livestock Production/Industries.
Ano: 1999
URL: http://purl.umn.edu/32757

Fatty acid profile of eggs of semi-heavy layers fed feeds containing linseed oil
Provedor de dados: 89
Autores: Souza,JG; Costa,FGP; Queiroga,RCRE; Silva,JHV; Schuler,ARP; Goulart,CC.
The incorporation of polyunsaturated fatty acids in chicken eggs by adding oils to the diets has been extensively studied. This experiment aimed at evaluating possible changes in the fatty acid profile of the eggs of layers fed diets supplemented with linseed and soybean oils. The experiment was performed using 192 29 week-old laying hens, distributed in a completely randomized design, into six treatments with four replicates of eight birds each. Treatments consisted of a control diet (no vegetable oil) and diets including 2% of vegetable oil. Linseed oil replaced 0, 25, 50, 75, and 100% soybean oil in the diets, corresponding to 0.0, 0.5, 1.0, 1.5, and 2.0% of linseed oil in the diet. A pool of two egg yolks from each treatment was submitted to lipid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg; Enrichment; Fatty acids.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000100006

Studies on carbon-13 turnover in eggs and blood of commercial layers
Provedor de dados: 89
Autores: Denadai,JC; Ducatti,C; Pezzato,AC; Carrijo,AS; Caldara,FR; Oliveira,RP.
This paper aimed at evaluating the influence of diets containing different isotopic values of carbon-13 turnover on the half-life of egg (yolk + albumen), yolk and albumen individually, and blood of poultry using delta‰13C isotopic variation. Commercial layers fed four experimental isocaloric and isonitrogenous diets (RC4, RC3, RMC4 and RMC3) containing different isotopic values, during an experimental period of 56 days. Turnover of the studied tissues was influenced by the experimental diets. Blood and albumen were more influenced by dietary treatments as compared to egg and yolk. The RMC3 diet induced better performance (better feed intake and higher egg production) due faster rate of carbon substitution than the RC4 diet, and lower half-life for egg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Albumen; Carbon-13; Yolk; Blood; Egg; Comercial laying hens.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400008

Performance, Body Temperature and Egg Quality of Laying Hens Fed Vitamins D and C Under Three Environmental Temperatures
Provedor de dados: 89
Autores: Faria,DE; Junqueira,OM; Souza,PA; Titto,EAL.
Three experiments were conducted in a climatic chamber to determine the effects of vitamins D3 and C supplementation on performance, body temperature, and egg quality under thermoneutral temperature (24.8º to 27.0º C), a cyclic heat stress (26.2º C for 16 h and 32.1º C for 8 h) and a constant heat stress (30.0º to 32.0º C) for three weeks in each temperature. One hundred forty-four White Leghorn hens aged 31 weeks were used in a completely randomized design with a factorial arrangement of 3 x 3: vitamin D3 (2,500, 3,000, and 3,500 IU/kg) and vitamin C (0, 200, and 400 ppm), with a total of nine treatments with four replicates of four hens each. Parameters measured included feed intake (FI), feed:gain (FG), egg production (EP), egg weight (EW), egg mass...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ascorbic acid; Cholecalciferol; Egg; Heat stress; Laying hens.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000100005

Immatures of Acanthocinini (Coleoptera, Cerambycidae, Lamiinae)
Provedor de dados: 92
Autores: Casari,Sônia A.; Teixeira,Édson P.
Immatures of Acanthocinini (Coleoptera, Cerambycidae, Lamiinae). Larva and pupa of Eutrypanus dorsalis (Germar, 1928), collected in trunks of Pinus elliottii Engelm., and Paratenthras martinsi Monné, 1998, collected in spathes of Scheelea phalerata (Mart. ex Spreng.) Burret, are described and illustrated. Larva and pupa of Lophopoeum timbouvae Lameere, 1884, collected in Hymenaea corbaril L., Enterolobium contortisiliquum (Vell.) Morong and Pterogyne nitens Tul., are redescribed and illustrated. A table with all described immatures of Lamiinae, and a comparison among the immatures of Acanthocinini are presented. Biological notes and new records are also included.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arecaceae; Cariniana estrellensis; Egg; Euterpe edulis; Host plants; Insecta.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262014000200003

Ultrastructure of the eggs of two species of Anopheles (Anopheles) Meigen (Diptera, Culicidae)
Provedor de dados: 92
Autores: Sallum,Maria Anice Mureb; Flores,Daniel Corugedo.
Egg ultrastructure of two morphologicaly similar species of the Arribalzagia Series, Anopheles (A.) costai Fonseca &amp;amp; Ramos, 1939 and A. (A.) mediopunctatus (Lutz, 1903) are described and illustrated using scanning electron micrographs. Although similar in the adult stage, male genitalia structures and larval and pupal stages, the eggs of these species are distinct. The eggs of A. costai and A. mediopunctatus are compared with that of A. forattinii Wilkerson &amp;amp; Sallum, 1999. Incomplete illustration of egg of A. forattinii is provided for comparison.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Anopheles; Arribalzagia; Culicidae; Egg; Ultrastructure.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262004000200005

Heterobathmia pseuderiocrania Kristensen &amp;amp; Nielsen (Lepidoptera, Heterobathmiidae): identificación basada en DNA-barcoding y notas morfológicas e historia de vida de los estados inmaduros
Provedor de dados: 92
Autores: Ramos,Rosa A.; Parra,Luis E.
Heterobathmia pseuderiocrania Kristensen &amp;amp; Nielsen (Lepidoptera, Heterobathmiidae): identification based on DNA-barcoding and notes on the morphology and life history of the immature stages. The larva morphology of the species Heterobathmia pseuderiocrania (Lepidoptera, Heterobathmiidae), a Nothofagus obliqua leafminer in Chile, is described. The tissue-feeding first and last instars are described. Also, the number of larval stages, some aspects of the biology and life cycle of the species are provided.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biology; COI; Egg; Insecta; Morphology.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000100005

Description of Photuris fulvipes (Blanchard) immatures (Coleoptera, Lampyridae, Photurinae) and bionomic aspects under laboratory conditions
Provedor de dados: 92
Autores: Rosa,Simone Policena.
Larvae and pupae of the cryptic firefly Photuris fulvipes (Blanchard,1837) are described. They were reared to adult stage from eggs laid by a female collected in São Luiz do Paraitinga, São Paulo, Brazil. Additionally, adult diagnosis and some bionomic data observed in the laboratory are presented. The bionomical and morphological characteristics of P. fulvipes were compared to other unidentified species of the genus and to Bycellonycha sp. from literature. At moment, the data are insufficient to propose a diagnosis for the species, but some characteristics appear to define species group or, at least, they may have generic value.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adult; Firefly; Larvae; Egg; Pupae.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262007000200001

External morphology of the immature stages of Neotropical heliconians: VIII. Philaethria wernickei (Röber) (Lepidoptera, Nymphalidae, Heliconiinae)
Provedor de dados: 92
Autores: Barão,Kim R.; Moreira,Gilson R. P.
The external features of egg, larva, and pupa of Philaethria wernickei (Röber, 1906) are described and illustrated, based upon light and scanning electron microscopy.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg; Emerald butterfly; Heliconians; Larva; Pupa.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262010000300008

Effects of crude protein levels on egg quality traits of brown layers raised in two production systems
Provedor de dados: 96
Autores: Viana,Eduardo de Faria; Stringhini,José Henrique; Carvalho,Fabyola Barros de; Viana,Débora Macedo Paronetto; Costa,Miliane Alves da.
ABSTRACT The objective of this study was the evaluation of egg quality of 30 to 45-week-old brown layers, raised in cages or on floor, supplemented with amino acids, using the ideal protein concept with levels of 14, 15, 16, and 18% crude protein. A total of 400 birds (Hy-sex Brown) were used, distributed into two breeding systems (conventional cage or floor). The evaluated variables were the yolk relative weight, yolk height, albumen relative weight, albumen height, specific gravity, eggshell thickness, and eggshell weight. Treatments consisted of reduced levels of crude protein and were provided to both groups equally. We adopted a completely randomized design, in a factorial scheme, composed of two breeding systems and four levels of crude protein,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brown layer; Cage; Egg; Floor.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001100847

Performance and nitrogen balance of laying hens fed increasing levels of digestible lysine and arginine
Provedor de dados: 96
Autores: Carvalho,Fabyola Barros de; Stringhini,José Henrique; Matos,Maíra Silva; Jardim Filho,Roberto Moraes; Café,Marcos Barcellos; Leandro,Nadja Susana Mogyca; Andrade,Maria Auxiliadora.
The objective of this experiment was to evaluate the effect of two digestible lysine levels and four digestible arginine levels on laying hens from 24 to 48 weeks of age. Three hundred and twenty Lohmann LSL laying hens were allotted in a completely randomized design in a 2 × 4 factorial arrangement, with two levels of digestible lysine (700 and 900 mg/kg of diet) and four digestible arginine levels (700, 800, 900 and 1000 mg/kg of diet). Results indicated requirement of 884 and 830 mg of digestible arginine/kg of diet, considering an average feed intake of 95 g/hen/day and an average hen weight of 1.5 kg, aiming at lesser feed intake and better nutritional balance of nitrogen, respectively. High digestible lysine levels in the diet require higher...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antagonism; Digestibility; Digestible amino acids; Egg; Production.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001000007

Comparison of fattening performance, carcass characteristics, and egg quality characteristics of Japanese quails with different feather colors
Provedor de dados: 96
Autores: Inci,Hakan; Sogut,Bunyamin; Sengul,Turgay; Sengul,Ahmet Yusuf; Taysi,Mehmet Resit.
The objective of this study was to compare fattening performance, carcass traits, and egg quality of Japanese quails with different feather colors (white, dark brown, golden, and wild-type). In the study, 360 one-day-old quail chicks with 4 different feather colors were used as animal material. Quails were fed ad libitum for 42 days to determine fattening performance and carcass traits. To determine egg traits, 48 hens from each group, in a total of 192, were selected and caged according to feather color. Eggs were collected for four consecutive weeks and egg quality characteristics were measured. Different feather colors had a significant effect on live weight, feed intake, feed conversion ratio, and carcass characteristics. Significant differences...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coturnix coturnix japonica; Feather color; Egg; Phenotypic characteristics; Quail.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015001100390

Effects of Pistacia terebinthus seed meal and different storage times on egg quality of laying hens
Provedor de dados: 96
Autores: Gultepe,Eyup Eren; Cetingul,Ibrahim Sadi; Uyarlar,Cangir; Iqbal,Aamir; Rahman,Abdur; Hacisalihoglu,Suleyman; Ozcinar,Umit; Bayram,Ismail.
ABSTRACT The present study examined the effect of supplementing the diets of laying hens with Pistacia terebinthus seed meal on egg quality during different storage intervals. A total of 192 laying hens (Babcock) were divided into six groups, and each group was further divided into four subgroups with eight hens each. Pistacia terebinthus seed meal was added to the diets of laying hens in the experimental groups at a rate of 0, 10, 20, 30, 40, and 50 g kg−1 of feed. At the end of the study (56 days), a total of 288 eggs (48 eggs from each group) were collected randomly. Seventy-two eggs were analyzed on day zero of storage, while the other eggs were stored at a temperature of 4 °C. The remaining eggs were analyzed after 10, 20, and 30 days of storage. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg; Laying hen; Yolk pigmentation.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100526

Effects of different levels of expanded perlite on the performance and egg quality traits of laying hens
Provedor de dados: 96
Autores: Oguz,Fatma Karakas; Gumus,Hidir; Oguz,Mustafa Numan; Bugdayci,Kadir Emre; Dagli,Hüseyin; Ozturk,Yasin.
ABSTRACT The influence of different levels of expanded perlite on the performance and egg quality traits was studied in laying hens. Forty Lohmann Brown females at 30 weeks of age were randomly assigned to four groups consisting of five replicates with two hens in each. Four diet groups were supplemented with 0% (control group), 1%, 2%, and 3% perlite, respectively. Feed and water were provided ad libitum. There were no significant differences in final body weight, feed intake, egg yield, and egg weight. Feed conversion ratio and egg weight decreased with addition of 2% perlite. Dietary perlite supplementation has no significant effects on shape, yolk, and albumen index. Haugh unit was affected significantly by addition of 2% perlite. Fecal pH, dry matter,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg; Performance; Perlite; Poultry.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000100020

Effects of continuous drought and immersion on hatchability of Ochlerotatus albifasciatus (Diptera: Culicidae) eggs stored at low temperature
Provedor de dados: 99
Autores: Campos,Raúl E; Sy,Victoria E.; Castro,Luis.
The role of environmental factors on the hatching response of O. albifasciatus (Macquart) eggs is studied by simulating winter conditions in the laboratory. The hypothesis tested was that hatching response is affected by: (1) time that eggs remain at low temperature, (2) storage conditions, and (3) acclimatization time. Eggs were stored at 5ºC in drought and immersion conditions during 7, 21, 35, 90 and 146 days, immediately after, they were acclimatized at 22ºC during 24, 72, and 168 hours, and then eggs were flooded to induce hatching. Percent of hatched eggs was analyzed with a Generalized Lineal Model with a binomial distribution. Results show that: (1) a long storage period at cold temperature and long acclimatization periods improve the hatching...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Floodwater mosquito; Diapause; Dormancy; Egg; Hatching factors.
Ano: 2007
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0373-56802007000100006

Physiological and biochemical characterization of egg extract of black widow spiders to uncover molecular basis of egg toxicity
Provedor de dados: 48
Autores: Yan,Yizhong; Li,Jianjun; Zhang,Yiya; Peng,Xiaozhen; Guo,Tianyao; Wang,Jirong; Hu,Weijun; Duan,Zhigui; Wang,Xianchun.
BACKGROUND: Black widow spider (L. tredecimguttatus) has toxic components not only in the venomous glands, but also in other parts of the body and its eggs. It is biologically important to investigate the molecular basis of the egg toxicity. RESULTS: In the present work, an aqueous extract was prepared from the eggs of the spider and characterized using multiple physiological and biochemical strategies. Gel electrophoresis and mass spectrometry demonstrated that the eggs are rich in high-molecular-mass proteins and the peptides below 5 kDa. The lyophilized extract of the eggs had a protein content of 34.22% and was shown to have a strong toxicity towards mammals and insects. When applied at a concentration of 0.25 mg/mL, the extract could completely block...
Tipo: Journal article
Palavras-chave: Black widow spider (L. tredecimguttatus); Protein composition; Egg; Molecular mechanism; Property analysis; Toxicity.
Ano: 2014
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602014000100017

Cysteine-Rich Secretory Proteins (CRISP) and their role in mammalian fertilization
Provedor de dados: 48
Autores: Cohen,Débora J; Maldera,Julieta A; Weigel Muñoz,Mariana; Ernesto,Juan I; Vasen,Gustavo; Cuasnicu,Patricia S.
Epididymal protein CRISPI is a member of the CRISP (Cysteine-RIch Secretory proteins) family and is involved in sperm-egg fusion through its interaction with complementary sites on the egg surface. Results from our laboratory have shown that this binding ability resides in a 12-amino-acid region corresponding to a highly conserved motif of the CRISP family, named Signature 2 (S2). In addition to this, our results revealed that CRISP1 could also be involved in the previous step of sperm binding to the zona pellucida, identifying a novel role for this protein in fertilization. As another approach to elucidate the participation of CRISP1 in fertilization, a mouse line containing a targeted disruption of CRISP1 was generated. Although CRISP1-deficient mice...
Tipo: Journal article
Palavras-chave: Sperm; Gamete fusion; CRISP; Egg; Fertilization.
Ano: 2011
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000200004

Interrelationships among egg, larvae and maternal characteristics in Persian sturgeon Acipenser persicus
Provedor de dados: 52
Autores: Nazari,Rajab Mohammad; Ghomi,Mohammad Reza; Aquiloni,Laura.
This study was aimed to observe the correlations among egg, larvae and maternal characteristics of Persian sturgeon. A total of 41 females were used and the variables including fertilization rate, incubation survival rate, larvae survival rate during yolk sac absorption (before feeding), and larvae survival rate after first feeding were determined. As a result, fertilization rate was positively correlated with three variables: incubation survival, larvae survival during yolk sac absorption, and GSI (gonadosomatic index). Also, maternal size (age, weight, total length) did not show a significant relation (P &gt; 0.05) with incubation survival, larvae survival during yolk sac absorption and larvae survival at first feeding stage.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Egg; Interrelationship; Larvae; Maternal characteristics; Persian sturgeon.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000500012

Egg Development of Paralichthys orbignyanus (Valenciennes, 1839)
Provedor de dados: 52
Autores: Cerqueira,Vinicius Ronzani.
Eggs of the Southern Brazilian flounder Paralichthys orbignyanus were obtained through spawning induction and reared in laboratory. The eggs released were free-floating or pelagic. Other important characteristics were: spherical shape, smooth chorion, narrow perivitelline space, and a single oil globule. Egg and oil globule diameter were about 0.792 ± 0.008 mm and 0.114 ± 0.003 mm, respectively. The blastodisc was observed approximately 1 h after fertilization and followed by blastodisc cleavage. Blastula stage started after about 5 h and gastrula stage after 9 h. Approximately 20 h after fertilization, blastopore closure was observed. Neurula or early embryo occurred after 24 h. Cardiac beats and movements of the free embryonic tail were recorded after 40...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flounder; Paralichthys orbignyanus; Egg; Embryo; Development.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300016