可乐定对生长猪胴体组成的影响及其作用机理探讨  

Effect of clonidine on carcass composition of growing pigs and approach to the mechanism of the effect

作　　者：王雷杰[1] 占秀安[1] 许梓荣[1] 朱顺达[2] 

机构地区：[1]浙江大学动物科学学院,浙江杭州310029 [2]杭州市质量技术监督检验院,浙江杭州310002

出　　处：《浙江大学学报（农业与生命科学版）》2005年第5期654-658,共5页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：浙江省科技攻关资助项目(001102263)

摘　　要：60头杜长大"三元杂交生长猪,按饲养试验要求分为2组,分别饲以添加0,0.50 mg/kg可乐定的相同饲粮,试验期为43 d.结果表明:在饲粮中添加可乐定能明显改变猪的胴体组成,使瘦肉率和眼肌面积分别提高了5.29%(P<0.01)和8.41%(P<0.01),脂肪比率和背膘厚分别降低了9.53%(P<0.01)和10.34%(P<0.05),背最长肌、股二头肌、股四头肌重量分别增加了13.77%(P<0.01)、11.11%(P<0.05)和8.93%(P<0.05);使血清中GH和IGF-1水平升高(P<0.05),尿素氮和甘油三酯浓度降低(P<0.05),游离脂肪酸浓度上升(P<0.05);使皮下脂肪组织中苹果酸脱氢酶和葡萄糖-6-磷酸脱氢酶活力下降(P<0.01),而激素敏感脂酶活力增高(P<0.05).Sixty growing pigs （Daroc（Landrace（Yorkshine） were used to study the effect of clonidine on carcass composition and its mechanism. The results showed that supplementation of 0. 5 mg/kg clonidine to feed increased lean meat percentage and eye muscle area of pigs by 5.29 % （P〈 0.01 ）and 8.41%（P〈 0.01）, weight of the longissimus dorsi, biceps femoris and quadriceps femoris by 13.77% （P〈0. 01）, 11.11%（P〈0.05）and 8.93%（P〈0.05）, and decreased fat percentage and hack fat thickness by 9.53%（P〈 0.01）and 10.34%（P〈0.05）, respectively. In serum,GH and IGF-1 level were raised（P〈0.05）, urine nitrogen and triglyceride concentration decreased （P〈0.05）, and free fatty acids increased （P 〈0.05）. In subcutaneous fat tissues, the malic dehydrogenase and glucose-6-phosphate dehydrogenase activities were lowered （P〈0.01）, and the hormone sensitive lipase activities improved （P〈0. 05）.

关 键 词：可乐定 猪 胴体组成 生长激素 胰岛素样生长因子-1 

分 类 号：S816.72[农业科学—饲料科学]