饲料铜来源和水平对仔猪血清学指标及生长性能的影响  

Effects of Copper at Different Form or Level as Dietary Additive on Growth Performance and Serum Biochemistry Parameters in Piglets

作　　者：邢芳芳[1] 印遇龙[1] 燕富永[1] 张宇喆[1] 刘志强[1] 刘建高[1] 黄瑞林[1] 孔祥峰[1] 舒绪刚 高碧 

机构地区：[1]中国科学院亚热带农业生态研究所动物生态营养与健康养殖联合实验室农业生态工程重点实验室 [2]广州天科科技有限公司,广州510627

出　　处：《动物营养学报》2007年第6期647-653,共7页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：供粤港绿色猪肉生产关键技术开发与研究(2006B200330005);农业科技成果转化基金项目"高纯度微量元素氨基酸螯合物规模化生产"(2006GB24910468)

摘　　要：本文旨在研究饲料铜来源和水平对仔猪血清学指标及生长性能的影响,探讨用低剂量氨基酸螯合铜替代高铜的可行性。试验选用216头体重为(14.31±1.61)kg的杜×长×大三元杂交仔猪随机分成9组,分别饲喂添加不同剂量硫酸铜、甘氨酸螯合铜和蛋氨酸螯合铜日粮30 d,测定仔猪血清学指标、生长性能及腹泻的变化。试验结果表明:饲料铜水平低于100 mg/kg时,血清铜含量随铜水平的提高有升高的趋势,100 mg/kg甘氨酸螯合铜组的猪血清铜含量最高,250 mg/kg硫酸铜的血清铜含量最低,在同一铜水平下氨基酸螯合铜组的血清铜含量高于无机铜组。50 mg/kg蛋氨酸螯合铜组血清中的生长激素和胰岛素水平最高(P<0.05),添加甘氨酸螯合铜或蛋氨酸螯合铜可提高血清胃泌素的水平,显著高于硫酸铜组(P<0.05),甘氨酸螯合铜降低了血清皮质醇含量(P<0.05)。100 mg/kg甘氨酸螯合铜和50 mg/kg蛋氨酸螯合铜的生长性能与250 mg/kg硫酸铜组比较,结果无显著性差异(P>0.05)。各组之间的料肉比无显著差异(P>0.05)。在腹泻方面,100 mg/kg甘氨酸螯合铜和250 mg/kg硫酸铜组的腹泻率最低(P<0.05)。试验结果证明了高铜的促生长作用可能与提高采食量、促进生长相关激素的分泌、提高抗应激能力和免疫功能有关,100 mg/kg甘氨酸螯合铜组可起到一定的替代效果,50 mg/kg蛋氨酸螯合铜组可能具备较高的应用潜力。In order to study effects of copper at different form and level on growth performance, diarrhea and serum biochemistry parameters, two hundreds and sixteen Duroc × Landrace× Yorkshire piglets with the body weight （BW） of （14.31 ± 1.61） kg were randomly assigned to 9 treatment groups, and feed basal diet supplemented with CuSO4, Gly-Cu and Met-Cu at different dosages, respectively. Results indicated that adding high copper improved the piglets＇BW, average daily gain and average daily feed intake, and of which in the groups with 100 or 250 mg/kg of Gly-Cu and 250 mg/kg of CuSO4 · 5H2O have no significance; the diarrhea ratio of the treatment groups with 250 mg/kg of CuSO4 · 5H2O and 250 mg/kg of Gly-Cu are lower than other groups. Comparing the same copper form, adding high copper increased （P〈0.05） the level of growth hormone （GH）, insulin （INS） and decreased the serum level of urea nitrogen, and 50 mg/kg of Met-Cu has better effect on promoting the secrete of GH and INS. The results proved that the growth role of the high-copper maybe have relationship with the enhancement of the piglets＇ appetite, the secretion promote of the growth correlation hormone enhance the antistress ability and the immunity function, the growth performance of the treatment groups with 100 mg/kg of Gly-Cu have no remarkable difference with the high copper group, may play certain substitution effect, the treatment groups with 50 mg/kg possibly has the high application potential. [Chinese Journal of Animal Nutrition, 2007,19（6） ：647-653 ]

关 键 词：仔猪 硫酸铜 有机螯合铜 生长性能 血清学指标 

分 类 号：S828[农业科学—畜牧学]