The influence of genetic β-lactoglobulin polymorphism on the quantity and quality of milk of the Simmental breed in Serbia
2021
Niksic, Dragan | Pantelic, Vlada | Ostojic-Andric, Dusica | Stanojevic, Dragan | Delic, Nikola | Stanojkovic, Aleksandar | Petricevic, Maja
Nikšić D., V. Pantelić, D. Ostojić Andrić, .D. Stanojević, N. Delić, A. Stanojković, M. Petričević (2021). The influence of genetic β -lactoglobulin polymorphism on the quantity and quality of milk of the Simmental breed in Serbia.- Genetika, Vol 53, No.1, 263-270. The study of the link between genes controlling protein polymorphism and milk performance traits of domestic animals has great economic importance from a selection point of view, as it reduces the generation interval, leading to increased productivity in livestock. The objective of this paper was to establish the influence of genetic β -lactoglobulin polymorphism on the quantity and quality of milk of the simmental breed in Serbiа. For the research blood samples were taken from a total of 157 Simmental cows. The genotypes of Simmental cows for β-lactoblobulin and their effect on quantitative milk performance traits were determined using the PCRRFLP analysis. The variability of traits influenced by the genetic polymorphism of β-lactoblobulin was statistically very highly significant (p <0.0001) for milk yield in standard lactation and milk fat and protein yields, while it showed no statistically significant variability (p> 0.05) for content of milk fat and protein. The AB genotype cows achieved a 121 kg and 338 kg increase in milk production compared to the BB genotype and AA genotype cows, respectively.
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