نتایج جستجو برای: csn1s1
تعداد نتایج: 92 فیلتر نتایج به سال:
در این مطالعه سعی شده که جایگاه اتصال فاکتورهای رونویسی موجود در ناحیه پروموتور ژن CSN1S1 در شتر مورد مطالعه قرار گیرند و با دیگر گونههای اهلی مقایسه شوند. پس از اخذ توالی ناحیه پروموتور از پایگاه داده NCBI، شناسایی جایگاههای اتصال فاکتورهای رونویسی با استفاده از نرمافزار بر خط PROMO صورت گرفت و نتایج با استفاده از Excel و Visual Bacis برای یافتن شباهت ها و تفاوتها مورد ارزیابی قرار گرفته ش...
Three different regions of the alphas1-casein gene (CSN1S1) were investigated to determine the frequencies of major alleles for null, low, intermediate and high milk protein expression in a herd of dairy goats raised in the southeastern region of Brazil. Genomic DNA samples were obtained from leukocytes of 145 dairy goats and regions of interest in the gene were amplified through Polymerase Cha...
Once daily milking (ODM) induces a reduction in milk production when compared to twice daily milking (TDM). Unilateral ODM of one udder half and TDM of the other half, enables the study of underlying mechanisms independently of inter-individual variability (same genetic background) and of environmental factors. Our results show that in first-calf heifers three CpG, located 10 kb upstream from t...
The objectives of this study were to 1) estimate the allelic frequencies in US beef cattle of 6 DNA markers reported to be associated with variation in dairy production traits; and 2) evaluate the association of these markers with beef production traits. Several genetic markers have been associated with milk yield or composition, including polymorphisms in secreted phosphoprotein 1 (SPP1; also ...
The stock assessment model described here is based on Sullivan et al.’s (1990) CASA model. CASA is entirely length-based with population dynamic calculations in terms of the number of individuals in each length group during each year. Age is largely irrelevant in model calculations. Unlike many other length-based stock assessment approaches, CASA is a dynamic, non-equilibrium model based on a f...
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