禽胰多肽对粤黄公鸡生长的影响

Effect of Avian Pancreatic Polypeptide on the Growth of Yuehuang Cocks

98只 18日龄的粤黄公鸡随机分为 7组 ,第Ⅰ组为对照组 ,每周每只皮下注射PBS 0 .5mL ,其中第Ⅱ～Ⅳ组每周皮下注射 3、6和 12 μg/kg禽胰多肽 (APP)纯品 ,第Ⅴ～Ⅶ组每周同部位分别注射 6、12和 2 4 μg/kg的APP粗品 ,连续 7次 .结果表明 :注射高剂量粗品APP可提高鸡的采食量、提高饲料转化率、提高鸡只胴体质量和全净膛质量、血中FT3 含量升高 ,鸡只生长速度加快 ,而一定量的纯品APP也可促进鸡只生长 。

Ninety six 18 day old Yuehuang cocks were randomly divided into seven groups. Group Ⅰ served as control and received subcutaneous injection of 0.5 mL PBS per bird, while groups Ⅱ?Ⅲand Ⅳ received similar injection of synthetic avian pancreatic polypeptide (APP) at doses: 3, 6 and 12 μg/kg respectively in 0.5 mL PBS, and group Ⅴ, Ⅵ and Ⅶ were treated with crude APP product at doses: 6, 12 and 24 μg/kg respectively in 0.5 mL PBS. The results showed that: 24 μg/kg crude APP product could enhance feed consumption, feed conversion, carcass mass and eviscerated carcass mass, and the concentration of FT 3 were significantly higher than those in controls (group Ⅰ), crude APP could promote growth of Yuehuang cocks. Meanwhile appropriate doses of synthetic APP could also promote growth of cocks, but the effect were not significant.