不同形态的铜对猪生长性能及血清GH、血浆NPY水平的影响

Effect of Organic Copper Verse Inorganic Copper on lever of Serum GH and Plasma NPY and Productivity of Swine

将 75头体质量约 2 0 kg的“军牧 1号”白猪 ,分成 A、B、C、D、E组。 A组为对照组 ,饲以基础日粮 ,B、C2组分别饲以添加 12 2 .5、2 5 0 mg/ kg铜 (硫酸铜 )的日粮 ;D、E 2组分别饲以添加 12 2 .5、2 5 0 mg/ kg蛋氨酸铜的日粮 ,观测不同形态的铜对仔猪生长性能以及血液 GH、血浆 NPY水平的影响。结果显示 :日粮中添加 2种铜均能促进仔猪的生长 ,提高饲料利用率 ,升高血液中 GH和血浆 NPY水平 ,但对采食量没有显著影响 。

Seventy-five pigs were randomly assigned into five groups,each of 15,fed on basal diets supplemented with 0,122.5,250 mg/kg copper(copper sulfate pentahydrate) and 122.5,250 mg/kg copper(copper methionine) respectively.The absolute weight(AW),average daily gain(ADG),gain feed(GF),growth hormone(GH) in serum,NPY in plasma were detected.The results as follows:High lever dietary copper(copper sulfate pentahydrate and copper methionine) increased pigs productivity and feed efficiency,but had no effect on the daily feed intake,given 122.5 mg/kg copper(copper sulfate pentahydrate and copper methionine) had the great productivity;Serum GH and plasm a NPY were elevated during the experiment;Copper sulfate pentahydrate and copper methionine at the same lever had no difference in promoting pig growth.