动物营养学报2012，Vol.24Issue(9)：1754-1763,10.DOI:10.3969/j.issn.1006-267x.2012.09.019
饲粮添加乳化剂与L-肉碱对肉鸡生长性能和血脂指标的影响
Effects of Dietary Emulsifier and L-carnitine on Growth Performance and Serum Lipid Indices of Broilers
摘要
Abstract
This experiment was conducted to investigate the effects of dietary emulsifier and L-carnitine on growth performance and serum lipid indices of broilers. A 2 x2 factoral completely random design was adopted , and nine hundred and sixty one-day-old Cobb commercial broilers were randomly allotted into 4 treatments with 6 replicates per treatment and 40 birds per replicate. This experiment included three periods; starter (1 to 21 days of age) , grower (22 to 49 days of age) and the whole (1 to 49 days of age) periods. The results showed as follows: 1) compared with the control group, dietary emulsifier significantly decreased feed to gain (F/G) during 1 to 21 and 1 to 49 days of age (P < 0.01, P <0.05) , and significantly increased serum free fatty acid (FFA) content at 21 and 49 days of age (P <0. 01) ; dietary L-carnitine, or L-carnitine + emulsifier significantly decreased F/G in any period (P <0. 01, P <0. 05) , and significantly decreased the contents of triglycerides (TG) and very low density lipoprotein (VLDL) in serum at 21 days of age (P<0.05) ; dietary L-carnitine significantly increased serum FFA content at 49 days of age (P< 0.05) ; 2) main effect analysis showed that dietary emulsifier significantly increased the contents of total bile acid (TBA) and FFA in serum (P <0.05) ; dietary L-carnitine significantly decreased F/G in any period (P<0. 01) , increased the rate of breast muscles (P<0.01) , decreased the contents of TG and VLDL in serum at 21 and 49 days of age (P < 0. 05) , and decreased the contents of total cholesterol (TC) and FFA in serum at 21 days of age (P <0. 05) . The interaction between emulsifier and L-carnitine significantly affected F/G during the starter and the whole periods and serum FFA content at 21 and 49 days of age (P <0. 01, P<0.05). In conclusion, the addition of emulsifier, L-carnitine and emulsifier + L-carnitine can improve feed utilization rate, increase the rate of breast muscle, and decrease the contents of TG and VLDL in serum. The addition of emulsifier or L-carnitine can both increase serum FFA content, and emulsifier + L-carnitine can decrease serum FFA content. Supplemental emulsifier or L-carnitine in the diet is better than emulsifier + L-carnitine under high temperature (30 to 35?). [ Chinese Journal of Animal Nutrition, 2012,24(9) : 1754-1763]关键词
乳化剂/L-肉碱/肉鸡/生长性能/血脂Key words
emulsifier/ L-carnitine/ broilers/ growth performance/ serum lipids分类
农业科技引用本文复制引用
柘丽,曾秋凤,丁雪梅,胡玲,张克英..饲粮添加乳化剂与L-肉碱对肉鸡生长性能和血脂指标的影响[J].动物营养学报,2012,24(9):1754-1763,10.基金项目
广州智特奇生物科技有限公司和四川农业大学双支团队资助 （）
