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Animal Science Papers and Reports

β-lactoglobulin genetic variants in Serbian Holstein-Friesian dairy cattle and their association with yield and quality of milk

Vitomir Vidovic
Faculty of Agriculture, Department of Animal Sciences, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia
Abstract :
In 765 Holstein-Friesian cows, the following ratios of β-lactoglobulin genotypes were found: 0.23
AA, 0.58 AB and 0.19 BB.
The cows of AA genotype yielded more milk and milk fat than cows of
genotype AB and BB.
Cows with β-lactoglobulin AA and AB genotypes yielded respectively 224 and
190 kg more milk per lactation when compared to cows of BB genotype but the differences were not
significant.
There were significant (P<0.01) differences in the yield of milk protein produced by cows
of the AB, BB and AA genotypes. Milk from cows of genotype AA and BB contained a slightly higher
percentage of milk fat when compared to milk of cows with lactoglobulin genotype AB. Percentage
of milk protein was higher in the milk of cows of genotype BB and AB.
β-lactoglobulin genotype had a significant impact on the yield of milk protein (P<0.01) , but had no
influence on the other observed properties of milk.
Keywords :
β-Lactoglobulin / milk fat / milk protein / milk yield

Date Deposited : 02 Apr 2015 10:49

Last Modified : 02 Apr 2015 10:49

Official URL: http://www.ighz.edu.pl/?p0=5&p1=34

Volume 32, Number 2, - 2014

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