摘要
选用1日龄樱桃谷肉用仔母鸭864羽,随机分成6组(每组设6个重复),各组按2种剂量水平(0和0.05%)的甜菜碱和3种剂量水平(0、0.06%和0.12%)的蛋氨酸分别组合添加进行2×3析因法设计。结果表明,在蛋氨酸相对缺乏的饲料中甜菜碱能高效替代蛋氨酸,甜菜碱对改善肉鸭屠体品质比蛋氨酸更为有效;甜菜碱和蛋氨酸在增重、料重比、胸肌率、腹脂率、肝脏中的甜菜碱一高半胱氨酸S-甲基转移酶(BHMT)的活性和胸肌中肉碱含量则无明显互作效应。
A total of 864 day - old female meat ducks were fed one of six diets in a 2 （0 and 0.5g betaine/kg） × 3 （0, 0.6, 1.2g methionine/kg） factorial arrangement between 0 and 41 days of age. There were six replicates of 24 ducks per treatment. The results of rearing trial showed that there were no significant interactions between betaine and DL - methionine, betalne is more effective in improving carcass quality than methionine, and also effective in promoting growth and feed efficiency of starter ducks, provided the dietary levels of methionine are not marginally limiting. The resuits implied that the betaine can enchance synthesis of carnitine by improving methylation metabolism and stimulate the B - oxidation of long chain fatty acids in the inner mitochondria membrane of muscle cells.
出处
《浙江畜牧兽医》
2005年第5期1-4,共4页
Zhejiang Journal Animal Science and Veterinary Medicine
