塞曼特罗(CIM)对猪的生长、胴体组成和营养分代谢的影响  

EFFECT OF CIMATEROL ON PERFORMANCE AND CARCASS AND SERUM TRAITS IN FINISHING SWINE

作　　者：丁宏标[1] 韩正康[1] 陈杰[1] 张建生[2,3] 孙士铨 

机构地区：[1]南京农业大学动物生理生化实验室 [2]江苏省常熟市畜禽良种场 [3]中国农业科学院饲料研究所

出　　处：《畜牧兽医学报》1997年第5期385-393,共9页ACTA VETERINARIA ET ZOOTECHNICA SINICA

摘　　要：选用２４头杜二杂种猪（试验１）和３２头大二杂种猪（试验２）进行日粮添加ＣＩＭ１μｇ／ｇ试验。试验１和２试验期分别为２８ｄ和２０ｄ。其中ＣＩＭ组的平均日增重分别较对照组提高１５．７％（Ｐ＜０．０５）和１２．９％（Ｐ＜０．０５），料重比分别降低１３．３％和１０．０％。屠宰结果表明，ＣＩＭ略提高屠宰率，显著提高胴体瘦肉率，试验１提高８．４％，试验２提高９．０％，同时显著降低胴体脂肪含量，试验１降低２３．０％，试验２降低１５．０％。ＣＩＭ不改变肌肉ＤＮＡ浓度，但显著提高腓肠肌和背最长肌的ＲＮＡ浓度及ＲＮＡ／ＤＮＡ值（Ｐ＜０．０１），对肌肉组织具有明显肥大作用。试验１和２ＣＩＭ组猪血清脲氮分别降低２３．２８％（Ｐ＜０．０１）和２４．７５％（Ｐ＜０．０１），血清ＦＦＡ都升高３０％以上，血清脂肪酶、ＧＰＴ、ＣＰＫ活性都有所升高，血清Ｔ３、Ｔ４显著升高（Ｐ＜０．０５），胰岛素略有降低。结果表明ＣＩＭ对杂种猪具有明显的促进生长和胴体改良作用。其作用系通过改变营养分代谢实现。Twenty four Duroc Erhualian(exp 1) and 32 Yorkshire Erhualian(exp 2) crossbreds swine were used to evaluate the effect of CIM on productivity and carcass and serum parameters in finishing swine Pigs were allocated in pair to two groups Animals were treated with 1μg/g CIM in the diet for 28 and 20 days in exp 1 and exp 2,respectively Comparing to the control,ADG of treated pigs in exp 1 and 2 were increased by 15 7%(P<0 05) and 12 9%(P<0 05),and feed/gain improved by 13.3% and 10 0%,respectively Meanwhile dressing percentage and muscle content (exp 1:+8 4%;exp 2:+9 0%)were increased,and fat deposit (exp 1:-23 0%;exp 2:-15 0%)was decreased significantly (P<0 05) DNA concentration was unaffected by 1 μg/g CIM,while RNA concentration and RNA/DNA of gastrocnemius and longissimus dorsi were significantly increased(P<0 01) This showed that CIM had an apparent muscle hypertrophy effect In exp 1 and 2 CIM also decreased serum urea nitrogen 23 28% (P<0 01) and 24 75%(P<0 01) respectively,while increased serum FFA level and lipase,GPT and CPK activity CIM also elevated serum T 3 and T 4 level(P<0 05),but lowered insulin level It is suggested that finishing pigs fed 1μg/g CIM diet had a significant improvement in productivity and carcass composition,and this effect was obtained mainly through affecting nutrient metabolism

关 键 词：塞曼特罗 猪 日增重 胴体组成 营养分代谢 

分 类 号：S828.1[农业科学—畜牧学] S859.794[农业科学—畜牧兽医]