动物营养学报2017，Vol.29Issue(5)：1785-1791,7.DOI:10.3969/j.issn.1006⁃267x.2017.05.039
过瘤胃保护甜菜碱和过瘤胃保护胆碱对1~3月龄湖羊生长性能、消化性能、屠宰性能和脂肪沉积的影响
Effects of Rumen?Protected Betaine and Rumen?Protected Choline on Growth Performance, Digestion Performance, Slaughter Performance and Fat Deposition of 1?to 3?Month?Old Hu Lambs
摘要
Abstract
The aim of this experiment was to study the effects of rumen?protected betaine ( RPB) and rumen?protected choline ( RPC) on growth performance, digestion performance, slaughter performance and fat depo?sition of 1?to 3?month?old Hu lambs. Thirty about 1?month?old Hu male lambs with the similar body weight were randomly divided into 3 groups with 10 lambs per group, which included control, RPB and RPC groups. Lambs in control group were fed with a basal diet, while those in RPB and RPC groups were fed the diets add?ed with 2.9 g/kg RPB and 2.5 g/kg RPC on the basis of dry matter ( DM) in the basal diet, respectively. The test had a 21?day for pre?experiment and a 45?day for experiment. The results showed as follows:1) diet add?ed with RPB and RPC had no significant effects on average daily gain, average daily feed intake and feed/gain of 1?to 3?month?old Hu lambs ( P>0.05) , but the average daily gain in RPB and RPC groups was increased by 19.97% and 27.75%, respectively, compared with the control group. 2) Diet added with RPB and RPC had no significant effect on the digestibility of crude protein ( CP) , neutral detergent fiber ( NDF) , acid deter?gent fiber ( ADF) , DM and organic matter ( OM) of 1?to 3?month?old Hu lambs ( P>0.05) . 3) Diet added with RPB and RPC were significantly decreased backfat thickness ( P<0.05) , but had no significant effects on live weight before slaughter, dressing percentage, carcass weight, GR value, loin eye area, abdominal fat weight, perirenal fat weight and intramuscular fat (IMF) content of 1? to 3?month?old Hu lambs (P>0.05). However, compared with the control group, the loin eye area in RPB and RPC groups was increased by 10.86% and 3.16%, the IMF content was increased by 17.27% and 36.36%, and the perirenal fat weight was decreased by 20.60% and 22.67%, respectively. Comprehensive the above results, it is concluded that the fat deposition sites and carcass quality of 1?to 3?month?old Hu lambs can be improved after adding 2.9 g/kg RPB or 2.5 g/kg RPC in diets, and from the perspective of digestion performance, growth performance and slaugh?ter performance, the effect of RPB and RPC is equivalent with the diet nutrient levels in maintaining the neces?sary conditions.关键词
过瘤胃保护甜菜碱/过瘤胃保护胆碱/生长性能/消化性能/屠宰性能/脂肪沉积Key words
rumen protected betaine/rumen protected choline/growth performance/digestion performance/slaughter performance/fat deposition分类
农业科技引用本文复制引用
姜贝贝,李华伟,王洪荣..过瘤胃保护甜菜碱和过瘤胃保护胆碱对1~3月龄湖羊生长性能、消化性能、屠宰性能和脂肪沉积的影响[J].动物营养学报,2017,29(5):1785-1791,7.基金项目
国家公益性行业(农业)科研专项"南方地区肉羊育肥与高品质肉生产技术研究"( 201303144 ) （农业）
江苏省苏北科技发展计划( BN2016075) （ BN2016075）
