Relationships between milk protein polymorphisms and production traits in cattle: a systematic review and meta-analysis

Ozdemir, Memis; Kopuzlu, Sinan; Topal, Mehmet; Bilgin, Omer Cevdet

Many researchers who have studied the relationships between milk protein polymorphisms and some yield traits in dairy cattle have reported incompatible results. In this study, in order to examine the overall relationships between milk protein genes known as major genes (CSN1S1, CSN2, CSN3, and BLG) and some yield traits (daily milk yield, lactation milk yield, fat yield, fat content, protein yield, and protein content), a meta-analysis was performed using some genetic models reported in the results of previous studies on cattle. The results suggest that the relationships of major milk protein genes with other factors should be studied using the codominant genetic model in general. Relationships among some CSN3 genotypes and fat yield, fat content, and protein content, and relationships between some BLG genotypes and daily milk yield, fat content, protein yield, and protein content were significant (inline-formulaP<0.05). No significant (inline-formulaP>0.05) relationships were found between these genotypes and other milk production traits. In addition, no significant (inline-formulaP>0.05) relationships between the CSN1S1 and CSN2 genotypes with the milk production traits examined were observed.

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Ozdemir, Memis / Kopuzlu, Sinan / Topal, Mehmet / et al: Relationships between milk protein polymorphisms and production traits in cattle: a systematic review and meta-analysis. 2018. Copernicus Publications.

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Rechteinhaber: Memis Ozdemir et al.

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