硫辛酸对热应激条件下母兔繁殖性能影响  

The Effect of Lipoic Acid on Rabbit′s Reproductive Performance under Heat Stress

作　　者：谢梅冬 梁明振[2] 黄忠勇[2] 卜泽明 

机构地区：[1]广西壮族自治区饲料监测所,广西南宁530001 [2]广西大学动物科技学院,广西南宁530004

出　　处：《畜牧与饲料科学》2010年第1期19-20,共2页Animal Husbandry and Feed Science

基　　金：广西自然科学基金专项(桂科基0731047)

摘　　要：在(31.2±1.5)℃条件下饲养,分别饲喂在基础饲料中添加0(对照组),200(处理1组),400(处理2组),600mg/kg(处理3组)硫辛酸的试验日粮。试验结果表明:①处理1组、处理2组、处理3组和对照组窝均产仔分别为(6.4±2.1)、(6.8±1.9)、(7.2±1.9)和(6.2±2.2)只,母兔的窝均产仔数有随硫辛酸添加量的增加而增加的趋势,且处理3组显著高于对照组(P<0.05);②对照组、处理1组、处理2组和处理3组窝均产活仔分别为(6.4±2.1)、(6.4±2.3)、(7.0±1.2)和(6.0±1.9)只,母兔的窝均产仔数有随硫辛酸添加量的增加而增加的趋势,且处理3组显著高于对照组(P<0.05);③对照组、处理1组、处理2组和处理3组仔兔的初生均重分别为(49.5±2.4)、(48.2±2.4)、(50.6±2.8)、(45.7±5.0)g,处理3组仔兔的初生均重显著高于对照组(P<0.05)。结论:高温热应激条件下,在日粮中添加硫辛酸可改善母兔的繁殖性能,以在日粮中添加600mg/kg的硫辛酸效果较好。The objective of this trial is to probe the effect of lipoic acid on rabbit＇s reproductive performance under heat stress. 20 female New Zealand rabbits were randomly divided into four groups, 5 replicates in every group was made with one rabbit in each replicate. The rabbits was respectively fed with the ration of 0 mg/kg fipoie acid in basal feed（control group）, and 200 mg/kg（treatment 1 ） ,400 mg/kg （treatment 2）,600 mg/kg （treatment 3）under the temperature （31.2±1.5） ℃. The results showed that： ①the average litter size among treatment 1, treatment 2, treatment 3 and control group were respectively （6.4±2.1）, （6.8±1.9）, （7.2±1.9） and （6.2±2.2）, there were a tendency that the average litter size increased with the lipoie acid concentration increasing in ration, and there was significant differeneebetween treatment 3 and control group （P〈0.05）; ②the average live litter size among treatment 1, treatment 2, treatment 3and control group were respectively （6.4±2.1）, （6.4±2.3）, （7.0±1.2）and （6.0±1.9）, there were a tendency that the average live litter size increased with the lipoic acid concentration increasing in ration , and there was significant difference between treatment 3 and control group （P〈0.05） ;③the average birth weight among treatment 1, treatment 2, treatment 3 and control group 1 were respectively （49.5±2.4） g, （48.2±2.4） g, （50.6±2.8） g and （45.7±5.0） g, the treatment 3 had significant difference compared with the control group （P〈0.05）. The conclusion could be made that it was better for reproductive performance with addition of lipoic acid in ration under heat stress, the optimal concentration of lipoic acid in ration was 600 mg/kg.

关 键 词：硫辛酸 热应激 母兔 繁殖性能 

分 类 号：S816.7[农业科学—饲料科学] S814.1[农业科学—畜牧学]