ABSTRACT

The transition period (3 weeks before to 3 weeks after parturition) is a pivotal time in the life of a dairy cow when they face tremendous metabolic and physiologic changes. It is of importance to notice the dynamic changes in metabolites and lipid profile of indigenous parturient Sahiwal cows for rational managemental intervention during the periparturient period. Remarkable alterations in serum metabolites (calcium, glucose, urea and creatinine) enzymes activities (aspartate aminotransferase and alkaline phosphatase) and lipid contents (total cholesterol, triglyceride, high-density lipoprotein cholesterol and low-density lipoprotein cholesterol and very low-density lipoprotein) were recorded during the transition period of parturient Sahiwal cows. Albeit, parturient Sahiwal cows are predisposed to negative energy balance and hypocalcemia for few weeks post-partum, they have a quicker metabolic adaptive potential to recoup the altered metabolites and lipids dynamics.

摘要

过渡期（分娩前 3 周至分娩后 3 周）是奶牛生命中面临巨大代谢和生理变化的关键时期。重要的是要注意土产Sahiwal奶牛的代谢物和脂质谱的动态变化，以便在围产期进行合理的管理干预。血清代谢物（钙、葡萄糖、尿素和肌酐）酶活性（天冬氨酸转氨酶和碱性磷酸酶）和脂质含量（总胆固醇、甘油三酯、高密度脂蛋白胆固醇和低密度脂蛋白胆固醇和极低密度脂蛋白）的显着变化记录在分娩Sahiwal奶牛的过渡期。虽然，产妇Sahiwal奶牛在产后几周内容易出现负能量平衡和低钙血症，它们具有更快的代谢适应潜力来恢复改变的代谢物和脂质动态。