A Meta-Analysis of the Associations Between Prolactin (PRL) Gene Polymorphism and Milk Production Traits in Cattle

The meta-analysis method is used to combine results from many independent studies conducted in a different region or area on a specific subject qualitatively and quantitatively and achieve a consensus. The current meta-analysis was conducted to investigate the association between prolactin gene polymorphism and milk production traits in dairy cattle. The data were collected between 2002 and 2021, and a total of 26 published studies were included in this study. The standardized mean difference (SMD) between genotypes was obtained for statistical evaluation, and to this end, the genetic models (dominant; AA + AB and BB, recessive; AB + BB with AA, co-dominant; AA, BB and AB genotypes) were compared with each other. In the analysis results, cattle with the AB versus BB genotype (SMD=0.289, 95% CI 0.005, 0.573) were found to have a statistically significant higher protein yield in comparison with the AA versus AB and AA versus BB genotypes. The relationships between prolactin gene polymorphism and milk yield, fat yield, fat content, and protein content traits were not found to be statistically significant.

Journal

KAFKAS UNIVERSITESI VETERINER FAKULTESI DERGISI

Year

2022

Volume

28

Issue

5

Pages

627-631

ISSN

1300-6045

eISSN

1309-2251

DOI

10.9775/kvfd.2022.27857

WoS UID

WOS:000884751200011