酶制剂和植物甾醇复合物对泌乳奶牛生产性能和血清指标的影响  

Effects of Enzyme-Phytosterol Complex on Performance and Serum Indices of Lactating Dairy Cows

作　　者：扈添琴[1] 韩兆玉[1] 王群[1] 唐波[1] 谢文昌 

机构地区：[1]南京农业大学动物科技学院,南京210095 [2]青海畜牧兽医职业技术学校,西宁812100

出　　处：《动物营养学报》2014年第1期236-244,共9页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金："十二五"国家科技计划课题(项目编号:2012BAD12B10)

摘　　要：本试验旨在研究酶制剂和植物甾醇复合物对泌乳奶牛生产性能和血清指标的影响。选用16头泌乳荷斯坦奶牛,随机分为4组,每组4头,按4×4拉丁方设计进行试验,每期试验为28 d,共4期。在4组奶牛的精料补充料中分别添加0(对照组)、0.1%(试验Ⅰ组)、0.2%(试验Ⅱ组)和0.5%(试验Ⅲ组)的酶制剂和植物甾醇复合物。结果表明:1)与对照组相比,试验Ⅰ组和试验Ⅱ组的产奶量和乳糖率提高(P>0.05),试验Ⅲ组的产奶量降低(P>0.05)。3个试验组的乳体细胞数均有所降低,其中试验Ⅰ组显著低于对照组(P<0.05)。2)试验Ⅱ组的血清葡萄糖含量高于对照组(P>0.05),显著高于试验Ⅲ组(P<0.05)。试验Ⅱ组和试验Ⅲ组的血清谷胱甘肽过氧化物酶活性高于对照组(P>0.05),显著高于试验Ⅰ组(P<0.05)。试验Ⅰ组的血清脂蛋白脂酶活性显著高于试验Ⅲ组(P<0.05),与对照组差异不显著(P>0.05)。试验Ⅲ组的血清免疫球蛋白G水平显著高于对照组(P<0.05),极显著高于试验Ⅰ组(P<0.01)。由此得出,在本试验条件下,在泌乳奶牛饲粮中添加适量酶制剂和植物甾醇复合物有提高产奶量、乳糖率,降低乳体细胞数,增强机体抗氧化和免疫能力的效果。This experiment was conduct to study the effects of enzyme-phytosterol complex on performance and serum indices of lactating dairy cows. In a 4 × 4 Latin square experiment design, sixteen lactating Holstein dairy cows were randomly allocated into four groups with four cows per group. There were four periods in the experiment and each period lasted for 28 d. The concentrate supplements of cows in the four groups were sup- plemented with 0 （ control group）, 0.1% （ trial group Ⅰ ）, 0.2 % （ trial group Ⅱ） and 0.5 % （ trial groupⅢ ） enzyme-phytosterol complex, respectively. The results showed as follows： compared with the control group, the milk yield and lactose percentage in trial groupsⅠ and II were increased （ P 〉 0.05 ）, while the milk yield was decreased in trial groupⅢ （P 〉 0.05 ）. The milk somatic cell count was decreased in three trial groups, and the difference was significant between trial group Ⅰ and control group （ P 〈 0.05 ）. Serum glu- cose content in trial group Ⅱ was higher than that in control group （ P 〉 0.05 ）, and significantly higher than that in trial groupⅢ （ P 〈 0.05）. Serum glutathione peroxidase activity in trial groupsⅡ and Ⅲ was higher than that in control group （ P 〉 0.05 ）, and significantly higher than that in trial group Ⅰ（P 〈 0.05 ）. Serum lipoprotein lipase activity in trial group Ⅰ was significantly higher than that in trial group Ⅲ （ P 〈 0.05 ）, but no significant difference was found in that between trial group Ⅰ and control group （ P 〉 0.05 ）. Serum immu- noglobulin G level in trial groupⅢ was significantly higher than that in control group （P 〈 0.05 ）, and ex- tremely significantly higher than that in trial group Ⅰ （ P 〈 0.01 ）. The results indicate that the enzyme-phytos- terol complex supplemented into the diet has an effect to improve the milk yield and lactose percentage, reduce the milk somatic cell count, and improve the body oxidation and immune capacity of

关 键 词：酶制剂 植物甾醇 复合物 泌乳奶牛 生产性能 血清指标 

分 类 号：S816.7[农业科学—饲料科学]