Dairy Holstein

IGF-I gene polymorphism, but not its blood concentration, is associated with milk fat and protein in Holstein dairy cows

E. Bonakdar, Rahmani, H. R., Edriss, M. A., and Tabatabaei, B. E. Sayed, IGF-I gene polymorphism, but not its blood concentration, is associated with milk fat and protein in Holstein dairy cows, vol. 9, pp. 1726-1734, 2010.

We estimated the allele and genotype frequencies of IGF-I/SnaBI gene polymorphism and the concentration of this protein in Holstein dairy cows. We also examined the association with milk yield (305-day milk yield) and milk components (fat and protein percentage, and 305-day milk protein and fat yield). Blood IGF-I levels were measured and genotyping was performed on 250 Holstein cows of four different herds.

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