妊娠湖羊补充L-Arg和Se对初乳及羔羊初生重的影响

Effects of L-Arg and selenium supplemented into diets on colostriims and birtli weight of HU shfep willi pregnant

为探究妊娠湖羊补充左旋精氨酸(L-Arg)和硒(Se)对初乳及羔羊初生重的影响,本试验选取体重相近、同期发情处理的已孕湖羊20只,随机分为4组(每组5只,饲喂相同的基础日粮),分别为Se组(饲喂Se含量为0.3 mg/kg的日粮)、Arg组(每天静脉注射70 mg/kg体重的L-Arg)、AS组(饲喂Se含量为0.3 mg/kg的日粮结合静脉注射70 mg/kg体重的L-Arg)、对照组。结果表明:与对照组比较,Arg组和AS组的羔羊初生重和初乳中乳蛋白含量分别提高了16.2%、11.3%和15.8%、13.3%(P>0.05),Se组和AS组初乳中的超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)活性显著提高(P<0.05),Arg组初乳中的GSH-Px活性显著提高(P<0.05),Se组、Arg组和AS组的IgG水平分别较对照组提高了12.7%、16.6%和22.6%(P>0.05)。由此可见,妊娠湖羊补充L-Arg和Se提高了初乳的抗氧化性、初乳中乳蛋白和IgG的含量及羔羊的初生重。

To study the effects of L-Arg and selenium supplementation to pregnant Hu Sheep on components,antioxidative capacity, IgG of eolostrum and birth weight of lambs, 20 pregnant Hu Sheep ewes with similar weight and estrus synchronization were selected and allotted randomly into 4 groups （five in each group,fed the same basal diets）：Se group （diets adding 0.3 rng/kg of Se were fed）,Arg group （intravenous injection of 70 mg/kg body weight of L-Arg per day）, AS group（diets which adding 0.3 mg/kg of Se were fed and intravenous injection of L-Arg 70 mg/kg body weight simultaneously per day）, control group.The results showed that：compared with control group ,the birth weight of lambs and milk protein content in Arg group and AS group increased by 16.2%, 11.3% and 15.8%, 13.3% respectively（P 〉 0.05）,the ac- tivity of superoxide dismutase （SOD） and glutathione peroxidase （GSH-Px） of colostrum in Se group and AS group increased significantly（P 〈 0.05）.The activity of GSH-Px of colostrum in Arg group increased significantly（P 〈 0.05）.The levels of IgG of colostrum in Se group,Arg group and AS group increased by 12.7%, 16.6% and 22.6% respectively （P 〉 0.05 ）.In conclusion, supplementation of L-Arg and selenium to pregnant Hu Sheep increased the anti-oxidative capacity of eolostrum, the content of milk protein and IgG, and the birth weight of lambs.