【作者】 迟景波；

【导师】 陈立志； 张辉；

【作者基本信息】 中国农业科学院 ， 兽医， 2007， 硕士

【摘要】 本文选取20头年龄、胎次相近(3-5胎,5-8岁),305d的产奶量大于5000kg健康的妊娠荷斯坦奶牛,根据血糖水平,将产前28d、14d和产后1d、14d、28d和56d各阶段分成低血糖组和正常血糖对照组。另选取自然发生酮病牛10头、脂肪肝病牛10头和正常对照组奶牛10头。通过饲养围产期低血糖奶牛、自然发生酮病和脂肪肝病奶牛试验,旨在研究低血糖、酮病和脂肪肝对围产期奶牛血液生化指标的影响,揭示围产期奶牛能量负平衡及能量代谢障碍过程中代谢变化,为防治奶牛围产期能量代谢障碍性疾病提供科学依据。实验结果表明:围产期奶牛易发生低血糖,产后呈现亚临床酮病,但是大多逐渐恢复正常。酮病、脂肪肝奶牛伴发低血糖,泌乳量下降,血液多种生化指标、肝脂含量发生不同程度的改变。脂肪肝病牛发生肝功不全。酮病奶牛亦可能存在肝功不全。更多还原

【Abstract】 In this paper, twenty healthy pregnant Holstein cows with near ages and parities (3-5 parities, 5-8 years old), each of which had much more than 5000kg milk yield in 305 days, were divided into low-blood-sugar group and normal-blood-sugar group at 10 days, 14 days before delivery and at 1day, 14 days, 28 days, 56 days after delivery according to the level of blood sugar. In addition, 10 normal cows and 20 cows respectively suffering from spontaneous ketone disease and fatty liver disease were picked out.Through the experiment of feeding low-blood sugar cows and cows spontaneously suffering from ketone disease and fatty liver disease during perinatology, the effects of low blood sugar, ketone disease and fatty liver disease on the blood biochemical indexes of cows under perinatology were investigated to clarify the metabolic changes of cow suffering from negative energy balance and energy metabolism disorder. This research would provide scientific basis for preventing and curing the cows suffering from disorder of energy metabolism during perinatology.The experimental results showed that cows under perinatology were easily subject to hypoglycemia and had subclinical ketone disease after delivery. But most of them would get back to normal gradually. Cows suffering from ketone disease and fatty liver disease would go with hypoglycemia, declining milk yield and changes of blood chemical indexes and fat contents in liver at different degrees. Cows suffering from fat liver disease would have hypohepatia. And it could also happen to cows suffering from ketone disease.更多还原