产后健康奶牛血液流变学和氧自由基变化

Clinical Changes of Hemorheology and Oxygen Free Radical in Healthy Postpartum Cows

观察产后健康奶牛 1～ 30d血液流变学和氧自由基主要指标动态变化。选择 2～ 4胎龄产后健康奶牛 18例 ,于产后 1d、2d、4d、7d、10d、15d、30d采血 ,检测血液流变学主要指标 (全血高切比粘度 ηb 80S-1、全血低切比粘度ηb 2 0S-1、血浆比粘度 ηp、血细胞压积PCV和血浆纤维蛋白原FG)和氧自由基主要指标 (超氧化物歧化酶SOD和丙二醛MDA)的变化。结果发现 ,血液流变学和氧自由基大多数指标 30d、15d与新产 1～ 7d比较 ,至少在某一时间段呈现差异极显著或显著 (P <0 .0 1或P <0 .0 5 )。

Dynamic changes of hemorheology and oxygen free radical were observed in eighteen healthy postpartum cows at its second to fourth farrow. Blood samples were collected at 1, 2, 4, 7, 10, 15, and 30 d after delivery. The measured data includ: whole blood specific viscosity (high shearing rate ηb80S -1 and low shearing rate ηb20S -1 ), plasma specific viscosity (ηP), packed cells volume (PCV), plasma fibrinogen concentration (FG), which were main indexes of hemorheology; and superoxide dismutase (SOD) and malondialdehyde (MDA), which were main indexes of oxygen free radical. Significant differences ( P <0.01 or P <0.05) were found between 30 d and/or 15 d and the first 1～7 d, at least in a period in most of the above indexes.