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作 者:金邦荃[1,2] 周蔚[1,2] 陈剑慧[1,2] 张向铭 徐小明[1,2]
机构地区:[1]江苏省农业科学院饲料食品研究所 [2]浙江大学阳光生物营养工程公司
出 处:《江苏农业学报》1998年第2期118-122,共5页Jiangsu Journal of Agricultural Sciences
基 金:江苏省"八五"攻关课题
摘 要:在3种不同日粮中分别添加0.5mg/kg、2.5mg/kg和5.0mg/kgβ-受体激动剂——塞曼特罗(ci-materol),饲喂30~50日龄的肉鸭,结果显示:3种不同剂量的塞曼特罗在3种日粮条件下均可促进肌肉增长;剂量达到5.0mg/kg时,不但刺激鸭胸大肌快速生长,而且能增强腿部肌肉生长,血清磷酸肌酸激酶活性也相应升高。鸭生长后期用塞曼特罗可明显抑制脂肪在体内的沉积,但日粮中能量不可过高,否则会掩盖塞曼特罗的功效。脂肪代谢过程中血糖升高和血清高密度脂蛋-胆固醇降低,表明脂肪分解作用可能加强。Three diets of different nutrient composition were supplemented with 3 concentrations (05,25 and 50 mg/kg)of βadrenergic agonist cimaterol,respectively,and fed to ducks during 30~50 days of age ,thus forming 3 treatments.Ducks fed on the same diet without cimaterol were used as controls.Muscle proliferation was found in ducks of all the 3 treatments.Feeding on diet 3 with 50 mg/kg cimaterol enabled ducks to grow breast and also leg muscles more rapidly and to have a higher level of creating phosphokinase in serum compared with control ducks.At later stage cimaterol can inhibit fat deposition in duck significantly.But when the metabolic energy in diet was over 116 MJ/kg,efficiency of cimaterol decreased.The increase of the glucose and the decrease of highdensity lipoprotein cholesterol levels in serum may indicate the increase of fat decomposition.
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