Effect of β-lactoglobulin, κ-casein and αs1-casein polymorphic allelic variant on milk production traits in Croatian population of Holstein, Simmental and Brown cattle breed
2014
Ante Ivanković | Muhamed Brka | Ervin Zečević | Zdenko Ivkić
The object of the present study was to analyse effect of polymorphic allelic variants of β-lactoglobulin, κ-casein and αs1-casein on total milk yield, fat and protein content in milk of Holstein, Simmental and Brown cattle breeds in Croatia during the first three standard lactations. Although the certain effects of polymorphic variants of β-lactoglobulin, κ-casein and αs1-casein on the level of milk yield in analyzed breeds of cattle are observed, those effects were not significant. The effect of polymorphic variants of β-lactoglobulin, κ-casein and αs1-casein on average fat content in milk of analyzed breeds has noticed, although differences were not significant. Differences in protein content in milk with different polymorphic variants of β-lactoglobulin, κ-casein and αs1-casein were not significant, except in case of BC genotype of αs1-casein, which was significant (P<0.05) on protein content in the milk of Holstein breed.
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