摘要
目的:探讨壳聚糖对乳房炎奶牛血清自由基代谢的影响。方法:选择产奶量、胎次和泌乳期相近,营养中等,乳房炎阴性6头,阳性30头,组成0(阴性对照组)、1(阳性对照组)和2、3、4、5组(试验组),每组6头。各组基础日粮相同。分别在各组基础日粮中添加壳聚糖0、0、10、20、40和80g/d·头。连续饲喂2周。分别于试验前(0周)、1周和2周采取血样,分离血清,测定血清SOD、CAT、GSH-Px活力和MDA、NO的含量。结果:饲喂壳聚糖后,各组血清SOD与GSH-Px活力显著升高,血清MDA含量显著降低。各试验组奶牛血清CAT活力均有升高的趋势,血清NO含量有降低的趋势,但差异均不显著(P>0·05)。结论:壳聚糖具有提高乳房炎奶牛血清SOD和GSH-Px活力,降低血清MDA的含量,提高机体抗氧化能力,改善血清自由基代谢水平和促进炎症康复的作用。但对血清CAT和NO基本没有影响。
The activity of serum SOD, GSH-PX increased and MDA decreased significantly after used chitosan. The activity of serum CAT tended to increase and content of NO tended to decrease. But the difference was no significant in each group dairy cows(p>0.05). Conclusion: Chitosan has the function of improving the activity of SOD and GSH-Px in mastitis dairy cow's serum, reducing the contained of MDA in serum, improving the ability of antioxidition, ameliorating metabolism level of free radicals in serum and advancing inflammation recuperation. But it has no effect on CAT and NO.
出处
《中国草食动物》
2006年第3期44-46,共3页
China Herbivores
基金
蚌埠市科技基金(2003486)
安徽省教育厅自然科学基金(2005KJ161)
关键词
壳聚糖
自由基
乳房炎
奶牛
Chitosan
Free Radicals
Mastitis
Dairy Cows
