Polymorphism of prolactin, growth differentiation factor 9, and calpastatin genes and their effects on weight traits in Awassi lambs.
作者： Khaleel Jawasreh , Zuhair Ismail
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摘要: Objectives This study was conducted to determine the correlation among prolactin gene (PRG), growth differentiation factor 9 (GDF-9), and calpastatin (CAG) genes polymorphism with traits in Awassi lambs. Materials methods Records of 779 lambs from 264 dams 15 sires were used. The sex, type birth (single versus twins), weight at birth, average daily gain (ADG), adjusted 60 days age determined for each animal. Blood samples collected all PRG, GDF-9, CAG using polymerase chain reaction-Restriction fragment length polymorphism. Results Three PRG genotypes (AA, AB, BB) a frequency 0.88, 0.05, 0.07, respectively. allele 0.84 0.16 A B alleles, For there only two detected (AB 0.96 0.04, 0.92 0.08 CAG, also 0.08, 0.04 significant (p ≤ 0.04) effect genotype on but this not ADG weaning. There no associations between any pre-weaning GDF-9 variants. Conclusion results show that could be used select high dystocia reduce newborn therefore conserve dam's reproductive functions improve lamb survivability.
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