Genetic polymorphisms of leptin and leptin receptor genes in relation with production and reproduction traits in cattle. | Zendy

Anna Trakovická | Zendy; Nina Moravčí­ková | Zendy; Radovan Kasarda | Zendy

Open Access

Genetic polymorphisms of leptin and leptin receptor genes in relation with production and reproduction traits in cattle.

Author(s) -

Anna Trakovická,

Nina Moravčíková,

Radovan Kasarda

Publication year - 1970

Publication title -

acta biochimica polonica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.452

H-Index - 78

eISSN - 1734-154X

pISSN - 0001-527X

DOI - 10.18388/abp.2013_2058

Subject(s) - leptin , biology , reproduction , leptin receptor , ice calving , single nucleotide polymorphism , population , candidate gene , zoology , genetics , genotype , gene , endocrinology , lactation , obesity , pregnancy , medicine , environmental health

Leptin and leptin receptor genes are considered as production traits markers in dairy or beef cattle. The aim of this study was to verify the associations of polymorphisms in bovine LEP and LEPR genes with production and reproduction traits in Slovak Spotted and Pinzgau cows. Long-life production was evaluated: milk, protein, and fat yield and reproduction traits: age at first calving, calving interval, days open, and insemination interval. In total, 296 blood samples of Slovak Spotted and 85 hair roots samples of Pinzgau cows were analyzed. In order to detect LEP/Sau3AI (BTA 4, inron 2) and LEPR/T945M (BTA 3, exon 20) genotypes PCR-RFLP method was used. In Slovak Spotted and Pinzgau cows allele frequencies were 0.838/0.162 and 0.694/0.306 for A and B LEP variants, and 0.954/0.046 and 0.912/0.088 for C and T LEPR variants, respectively. For testing the associations between SNPs LEP/Sau3AI and LEPR/T945M and evaluated traits, the General Linear Model procedure in SAS Software was used. Statistical analysis showed that SNP LEP/Sau3AI significantly affected milk, protein and fat yield (P<0.05), and age at first calving (P<0.01) in analyzed population of cows. Statistically, SNP LEPR/T945M affected significantly calving interval (P<0.01) only. Results of our study suggest that especially leptin is a candidate gene, which influences mainly milk production traits and might be implemented in breeding strategies to improve the production performance of both analyzed cattle breeds.

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