عنوان :
ارتباط پلي مورفيسم ژن هورمون رشد با صفات توليدي در گاو هلشتاين
مقطع تحصيلي :
كارشناسي ارشد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده كشاورزي
صفحه شمار :
يازده، 90،[II] ص: مصور، جدول، نمودار
يادداشت :
ص.ع.به: فارسي و انگليسي
استاد راهنما :
محمد علي ادريس، حميد رضا رحماني
استاد مشاور :
غلام رضا قرباني، بدرالدين ابراهيم سيد طباطبايي
توصيفگر ها :
نشانگرها , ژل آكريل آميد , بارگذاري , نيترات نقره
تاريخ نمايه سازي :
26/10/86
استاد داور :
مسعود عليخاني، آقافخر ميرلوحي
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتال
چكيده انگليسي :
AbstractSelection in dairy breeding is basically aimed at milk production and composition Recently a number of potential candidate genes have been recognized Candidate genesare selected on the basis of known relationships between physiological or biochemicalprocesses and the trait Occurrence of allelic variation in the regulatory and structuralregions of those genes may influence the diversification of quantity and composition ofmilk Polymorphism of nucleotide sequences in these regions may influence the geneexpression or a sequence of the product Therefore the importance of milk productioneffect and administration of growth hormone GH on cattle production prompted us toexamine the presence of restriction fragment length polymorphism at the GH gene as agenetic marker information A total of 257 Holstein cows from four herds in Isfahanprovince were genotyped Two variants of bovine growth hormone gene L and V wereidentified with Alu I enzyme The frequency of L and V allele was 0 74 and 0 26 respectively Distribution of genotypes was 0 541 for LL 0 401 for LV and 0 058 for VVgenotypes The studied populations were in Hardy Weinberg equilibrium The SASsoftware was used for this analysis The formula of general linear model GLM included the effects of growth hormone genotype LL LV and VV and herd n 1 4 The statistically significant differences between individuals of different herds werefound at birth weight gestation length milk fat and protein yield On the basis of thepresented significance levels GH genotype affected gestation length significantly According to the results of the present study and earlier results of other it might beconcluded that highly strong relationship between GH genotype and milk production orreproduction traits could not be detected The stimulated growth hormone release isheritable in dairy cattle and is affected by the Leu Val polymorphism in the GH gene Hence they may be useful physiological indicators for selection on milk production
استاد راهنما :
محمد علي ادريس، حميد رضا رحماني
استاد مشاور :
غلام رضا قرباني، بدرالدين ابراهيم سيد طباطبايي
استاد داور :
مسعود عليخاني، آقافخر ميرلوحي
