Comparison of serum leptin, glucose, total cholesterol and total protein levels in fertile and repeat breeder cows

In the present study we measured serum glucose, leptin, total cholesterol and total protein concentrations in repeat breeder cows and compared them with fertile cows. For this aim, 20 repeat breeder cows and 20 fertile cows were used as material. Repeat breeder cows were found to have lower levels of leptin and glucose as compared with fertile ones. No significant differences in total cholesterol and total protein levels were observed between the two groups. No significant correlation of leptin with glucose, total cholesterol and total protein was observed in fertile and repeat breeder cows. Low concentrations of glucose and leptin can have some effects on reproductive problems as repeat breeder and help to understand potential mechanisms impairing fertility in repeat breeder cows.

本研究以20头重复配种母牛（repeat breeder cows）与20头可育母牛为实验材料，检测两组个体的血清葡萄糖、瘦素（leptin）、总胆固醇及总蛋白浓度并进行对比。结果发现，相较于可育母牛，重复配种母牛的瘦素与葡萄糖水平更低；两组间总胆固醇与总蛋白水平无显著差异。在可育母牛与重复配种母牛群体中，均未观察到瘦素与葡萄糖、总胆固醇及总蛋白存在显著相关性。低浓度的葡萄糖与瘦素可能对重复配种相关的生殖问题产生一定影响，有助于阐明重复配种母牛生育能力受损的潜在机制。