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Comparison of fattening performance, carcass characteristics, and egg quality characteristics of Japanese quails with different feather colors R. Bras. Zootec.
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
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Comparison of methods by TLC and HPTLC for determination of aflatoxin M1 in milk and B1 in eggs Ciênc. Tecnol. Aliment.
Scussel,V. M..
Milk and egg matrixes were assayed for aflatoxin M1 (AFM1) and B1 (AFB1) respectively, by AOAC official and modified methods with detection and quantification by thin layer chromatography (TLC) and high performance thin layer chromatography (HPTLC). The modified methods: Blanc followed by Romer, showed to be most appropriate for AFM1 analysis in milk. Both methods reduced emulsion formation, produced cleaner extracts, no streaking spots, precision and accuracy improved, especially when quantification was performed by HPTLC. The use of ternary mixture in the Blanc Method was advantageous as the solvent could extract AFM1 directly from the first stage (extraction), leaving other compounds in the binary mixture layer, avoiding emulsion formation, thus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aflatoxin; AFM1; AFB1; TLC; HPTLC; Milk; Egg.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612003000400009
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Cysteine-Rich Secretory Proteins (CRISP) and their role in mammalian fertilization Biol. Res.
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
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Description of Photuris fulvipes (Blanchard) immatures (Coleoptera, Lampyridae, Photurinae) and bionomic aspects under laboratory conditions Rev. Bras. entomol.
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
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Early ontogenesis of the angelfish, Pterophyllum scalare Schultze, 1823 (Cichlidae) Neotropical Ichthyology
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
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Effects of continuous drought and immersion on hatchability of Ochlerotatus albifasciatus (Diptera: Culicidae) eggs stored at low temperature Rev. Soc. Entomol. Argent.
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
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Effects of crude protein levels on egg quality traits of brown layers raised in two production systems R. Bras. Zootec.
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
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Effects of different levels of expanded perlite on the performance and egg quality traits of laying hens R. Bras. Zootec.
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
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Effects of Pistacia terebinthus seed meal and different storage times on egg quality of laying hens R. Bras. Zootec.
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
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Egg Development of Paralichthys orbignyanus (Valenciennes, 1839) BABT
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
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Estimación de un modelo econométrico simultáneo para el mercado de huevo en México (1960-2007). Colegio de Postgraduados
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
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External morphology of the immature stages of Neotropical heliconians: VIII. Philaethria wernickei (Röber) (Lepidoptera, Nymphalidae, Heliconiinae) Rev. Bras. entomol.
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
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External morphology of the immature stages of Neotropical heliconians: X. Heliconius sara apseudes (Lepidoptera, Nymphalidae, Heliconiinae) Iheringia, Sér. Zool.
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
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Extra-Renal Lesion Caused by Dioctophyma renale Eggs in an Erratic Cycle in a Dog International Journal of Morphology
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
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Fatty acid profile of eggs of semi-heavy layers fed feeds containing linseed oil Rev. Bras. Ciênc. Avic.
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
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Heterobathmia pseuderiocrania Kristensen & Nielsen (Lepidoptera, Heterobathmiidae): identificación basada en DNA-barcoding y notas morfológicas e historia de vida de los estados inmaduros Rev. Bras. entomol.
Ramos,Rosa A.; Parra,Luis E..
Heterobathmia pseuderiocrania Kristensen & 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
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Immature stages and phylogenetic importance of Astrapaeus, a rove beetle genus of puzzling systematic position (Coleoptera, Staphylinidae, Staphylinini) Naturalis
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
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Immatures of Acanthocinini (Coleoptera, Cerambycidae, Lamiinae) Rev. Bras. entomol.
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
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Interrelationships among egg, larvae and maternal characteristics in Persian sturgeon Acipenser persicus BABT
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 > 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
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La production chez les crustacés. Rôle dans les écosystèmes et utilisations ArchiMer
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
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