Endogenous Viral Genes: Association with Reduced Egg Production Rate and Egg Size in White Leghorns
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چکیده
منابع مشابه
Effect of High and Low Stocking Density on Age of Maturity, Egg Production, Egg Size Distribution in White and Brown Layer Hens: A Meta-analysis
Data of four layers flocks (#31-34) from North Carolina Layer Performance and Management Test of the Department of Agriculture and Consumer Services were used in the meta-analysis to find if an increase in space allowance can affect egg production traits in white and brown layers. Effects of space allowance of 310 and 413 cm2/bird on layers performance were compared in this study. The increase ...
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The induction and regulation of broodiness is of the most important role of prolactin in avian species.The promoter region of the prolactin gene is an appropriate model for studying tissue-specific andhormonally-regulated activation of gene transcription. In this study, the association between prolactinpromoter region alleles and egg production in Fars native chickens was investigated. In total...
متن کاملSperm quality, egg size, fecundity and their relationships with fertilization rate of grass carp (Ctenopharyngodon idella)
Gametes were collected by abdominal massage from 15 anesthesized male and female grass carp. In collected sperm samples the following mean spermatological properties were determined: sperm volume 15.64 ± 5.39 mL, sperm motility 81.20 ± 7.61%, motility duration 62.06 ± 19.40s, density 17.88±5.48 x109 mL-1, total density 428.90±302.05 x109, and pH 7.25±0.81. Also egg size (mm) and fecundity (egg...
متن کاملEvaluation of different egg quality traits and interpretation of their mode of inheritance in White Leghorns.
AIM The experiment was carried out to evaluate different external and internal egg quality traits and to figure out their mode of inheritance from a set of hierarchically classified data. MATERIALS AND METHODS The data collected from 548 progenies (1 egg from each progeny) of 282 dams mated to 47 sires (1 sire mated to 6 dams) of a White Leghorn flock were used in the present study. Phenotypi...
متن کاملSperm quality, egg size, fecundity and their relationships with fertilization rate of grass carp (Ctenopharyngodon idella)
Gametes were collected by abdominal massage from 15 anesthesized male and female grass carp. In collected sperm samples the following mean spermatological properties were determined: sperm volume 15.64 ± 5.39 mL, sperm motility 81.20 ± 7.61%, motility duration 62.06 ± 19.40s, density 17.88±5.48 x109 mL-1, total density 428.90±302.05 x109, and pH 7.25±0.81. Also egg size (mm) and fecund...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1991
ISSN: 0032-5791
DOI: 10.3382/ps.0700618