Effect of Betaine on the Regulation of the Lipid Metabolism in Laying Hen

作     者：ZOU Xiao-ting and LU Jian-jun( The Key Laboratory of Animal Nutrition , Ministry of Education/Feed Science Institute of Zhejiang University,Hangzhou 310029 ,P.R. China ) 

作者机构：The Key Laboratory of Animal Nutrition Ministry of Education/Feed Science Institute of Zhejiang University Hangzhou 310029 P. R. China 

出 版 物：《Agricultural Sciences in China》 (中国农业科学（英文版）)

年 卷 期：2002年第1卷第9期

页      面：1043-1049页

学科分类：090502[农学-动物营养与饲料科学] 0905[农学-畜牧学] 09[农学] 

基　　金：Zhejing Science and Technology Commission Fund(981102018) 

主　　题：Hen Betaine Lipid metabolism 

摘      要：The experiment was conducted to investigate the effects of betaine on lipid metabolism of laying hens. 1 600 ISA brown laying hens of 20 weeks of age were alloted randomly into 4 groups each with 4 replicates of 100 layers, the layers were given a corn-soybean basal diet with 0,400,600 and 800 mg/kg betaine re-spectirely. Results indicated that supplementation of 600 mg/kg betaine significantly improved lay performance, and increased egg production 8.67% (P0.04), decreased feed/egg ratio by 9.02%(P0.03) compared with control, but there were no significant differences in egg weight and feed intake. It was found that supplementation of 600 mg/kg betaine decreased weights of abdominal fat by 19.63%(P0.02)and 22.35% (P0.02), and decreased liver fat by 8.52%(P0.05) and 16.28%(P0.01) in 50 and 70 weeks of age respectively. Compared with control, in 70 weeks of age, activity of LPL in abdominal fat was decreased by 44.83% (P0.01), HSL activity in abdominal fat increased by 50.0% (P0.02), and MDH activity in liver was decreased by 28.74 % (P 0.03). Supplementation of 600 betaine increased levels of T3 by 43.29 % (P 0.05) and 43.95 % (P 0.02) in 50 and 70 weeks of age respectively, and increased the concentration of cAMP in hypothalamus and anterior pituitary by 59.89% (P0.01) and 24.03% (P0.05) respectively in 70 weeks of age. The concentration of serum gluclose (GLU) , FFA and phospholipid were increased by 44.50% (P0.03), 19.66%(P0.03) and 71.66% (P0.01) in 50 weeks of age. The concentration of serum gluclose (GLU), FFA and phospholipid were increased by 16.25%(P0.05),22.51%(P0.02) and 22.42%(P0.01) in 70 weeks of age.