The protein UCP3 can perform several different functions such as regulating lipid metabolism in mitochondria, protecting against oxidative stress, and regulating energy metabolism, and proper metabolism is crucial in cows during lactation. The aim of the study was to determine the frequency of genes and alleles and their influence on milk production traits for four SNP (rs467440799, rs446854207, rs444645335, and rs440638775) polymorphisms in the UCP3 gene. The experiment was conducted in a herd of Polish Holstein-Friesian black and white cows, and genotypes were determined using the PCR-RFLP method. The conducted research showed that the analyzed SNPs significantly (p ≤ 0.05) influence milk production traits such as milk yield, fat yield, and protein yield.
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Kowalewska-Łuczak et al. (2024) studied this question.
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