Differences in serum glycolipid metabolism parameters in dairy cows before and after the perinatal period
The purpose of the experiment was to explore the change pattern of serum glycolipid metabolism parameters at different time during the perinatal period.13 young Chinese Holstein cows were randomly selected according to the body condition(3.25±0.5,5-point scale)and weight((570±50)kg).Serum samples were collected 14,7 days before delivery,and 1,7,14 and 21 days after delivery to detect glucose metabolism indicators(glucagon,glycated hemoglobin,insulin,blood glucose)and lipid metabolism indicators(blood ketone,low density lipoprotein,cholinesterase,low density lipoprotein cholesterol,high density lipoprotein cholesterol,triglycerides,cholesterol,and free fatty acid).The results showed that the glucagon concentration in pp14 blood was significantly lower than that of pp 7 and pp1(P＜0.05);the insulin levels in the blood of ap7 cows were significantly higher than the concentrations of pp7,pp14 and pp21,and the insulin level of blood in pp1 cows was significantly higher than the concentration of pp14 and pp21(P＜0.05);BHBA levels in blood from pp7,pp14,pp21 cows were significantly higher than the concentration of ap 14.The BHBA level in the blood of pp14 cows was significantly higher than the concentration of pp1(P＜0.05);HDL-C concentration in blood of ap7,pp1,pp7 was significantly lower than that of pp14,pp21(P＜0.05);Blood CHO levels of cows were significantly lower in pp1,pp7 than pp14,pp21,and ap7 was significantly lower than pp21(P＜0.05).The results showed that the changes of blood glucose and lipid metabolism parameters in perinatal dairy cows may lead to significant changes in postpartum glucose metabolism and body fat mobilization in dairy cows.
perinatal periodglucose and lipid metabolismfat mobilizationnegative energy balanceketosis prevention
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