Estimation of the breeding value and ranking of holstein-friesian bulls for milk production traits

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Association between DGAT1 Genotype and Breeding Value of Milk Production Traits in Iranian Holstein Bulls

The aim of this study was to test the genotypes effect of DGAT1 gene on breeding value in Iranian Holstein milk production traits. For this purpose, 103 semen samples of registered bulls were collected and then genotyped for partial region of DGAT1 gene. The studied traits were milk yield (MY), fat yield (FY), protein yield (PY), fat percentage (FP) and protein percentage (PP). First lactation ...

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1 Department of Genetics and Animal Breeding, West Pomeranian University of Technology in Szczecin, Doktora Judyma 6, 71-466 Szczecin, Poland 2 Department of Animal Genetics and Animal Breeding, National Research Institute of Animal Production, Krakowska 1, 32-083 Balice/Kraków, Poland 3 Department of Genetics, Wrocław University of Environmental and Life Sciences, Kożuchowska 7, 51-631 Wrocław...

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association between dgat1 genotype and breeding value of milk production traits in iranian holstein bulls

the aim of this study was to test the genotypes effect of dgat1 gene on breeding value in iranian holstein milk production traits. for this purpose, 103 semen samples of registered bulls were collected and then genotyped for partial region of dgat1 gene. the studied traits were milk yield (my), fat yield (fy), protein yield (py), fat percentage (fp) and protein percentage (pp). first lactation ...

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The Association of Bovine Osteopontin (OPN) Gene with Milk Production Traits in Iranian Holstein Bulls

Background: The Osteopontin (OPN) is a highly phosphorylated glycoprotein in numbers of bovine tissues and milk. OPN has been reported to be associated with milk production in cattle. Objective: The genotype and allelic frequencies for OPN and its association with milk production will be evaluated in Iranian Holstein Bulls.   Materials and Methods: Bulls DNA (100) was isolated. Oligo was used f...

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Estimation of Economic Values for Fertility, Stillbirth and Milk Production Traits in Iranian Holstein Dairy Cows

The objective of present study was to derive the economic values for number of inseminations to conception, calving interval, milk yield and stillbirth, using economic data of 10 Iranian Holstein herds. The economic values were derived by using the profit function methods and differentiating a profit equation with respect to the traits of interest. The cow fertility costs herd amortization or r...

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ژورنال

عنوان ژورنال: Selekcija i semenarstvo

سال: 2018

ISSN: 0354-5881,2406-209X

DOI: 10.5937/selsem1802032m