生长激素对猪生长、胴体组成及肉质的影响

Effects of Porcine Somatotrophin on Growth Performance,Carcass Composition and Meat Quality of Finishing Pigs

选用体重６４ ｋｇ 左右的大大二三元杂种猪１８ 头， 随机分为２ 组， 试验组和对照组各９ 头。试验组每头每天肌肉注射猪生长激素（ｐＳＴ）５ ｍｇ ，共１４ ｄ， 对照组肌注生理盐水。饲养结束时进行屠宰测定， 取背最长肌进行肉质分析。结果表明： ｐＳＴ 处理组平均日增重显著高于对照组（ Ｐ ＜ ０－０５） ， 料重比下降２１－６８ ％ ， 胴体重提高２－６２ ％ ， 三点膘厚下降７－７８ ％ ， 肝重提高１４－８６％ ， 心重提高１８－０７ ％ ， 肌肉失水率提高１２－６８ ％ ，切割力提高１－６８ ％ ， 大理石纹提高１５－０９ ％ ， 但差异均不显著（ Ｐ ＞ ０－０５） 。ｐＳＴ

Studies were carried out to determine the effects of porcine somatotrophin(pST)on growth performance,Carcass composition and meat quality of finishing pigs.Eighteen crossbred pigs(Largewhite×Largewhite×Erhualian)averaging 64 kg BW were randomly divided into two groups.The experimental group was given muscle injection of 5 mg/d pST for 14 d,and the control was given of saline.Animals were sacrificed at the end of week to determine carcass characteristics.Compared to the control,pST improved the ADG significantly(P<0 05),F/G deceased by 21 68%.Carcass weight increased by 2 62%,three point fat thickness dropped by 7 78%.Liver and heart weight increased by 14 86% and 18 07%,respectively.Meat quality was affected by pST treatment,but the differences were not significant.Other characteristics were generally unaffected by exogenous pST.