围产期小尾寒羊血清T-SOD活性和MDA含量变化的研究

目的]研究围产期小尾寒羊血清T-SOD活性和MDA含量的变化。方法]选择20只年龄在2~5岁之间的小尾寒羊,其中10只为待产母羊,10只为空怀母羊,分别于产前20d、产前10d、产前1d、产后1d、产后10d、产后20d颈静脉采血,测定血清T-SOD活性和MDA含量。结果]围产期小尾寒羊在整个围产期内血清中T-SOD活性呈先下降后逐渐升高的动态变化,其中,在产前1d出现最低值且围产期小尾寒羊T-SOD活性均低于空怀小尾寒羊;围产期小尾寒羊在整个围产期内血清中MDA含量呈先上升后逐渐下降的动态变化,其中,在产后1d出现最低值且围产期小尾寒羊MDA含量均高于空怀小尾寒羊。结论]怀孕和分娩对小尾寒羊T-SOD活性和MDA含量有一定的影响。

Study on the Changes of T-SOD Activity and MDA Content in the Serum of Small-tailed Han Sheep in Perinatal Period

Objective] The research aimed to study the changes of T-SOD activity and MDA content in the serum of small-tailed Han sheep in perinatal period. Method] 20 2～5 year-old small-tailed Han sheep were selected, including 10 pregnant ewes and 10 non-pregnant ewes. The blood samples was collected on the 20th, 10th and 1st d before parturition and the 1st, 10th, 20th d after parturition to measure T-SOD activity and MDA content in the serum. Result] T-SOD activity in the serum of small-tailed Han sheep showed the dynamic change trend of first decrease and gradual increase in the whole perinatal period. T-SOD activity on the 1st day before parturition was lowest and T-SOD in the serum of small-tailed Han sheep in perinatal period was all lower than that in non- pregnant ewes. MDA content in the serum of small-tailed Han sheep in perinatal period showed the dynamic change trend of first decrease and gradual increase in the whole perinatal period. MDA content on the 1st day after parturition was lowest and T-SOD in the serum of small-tailed Han sheep in perinatal period was all higher than that in non- pregnant ewes. Conclusion] The pregnancy and parturition had some influences on T-SOD activity and MDA content of small-tailed Han sheep.