安徽农业科学2011，Vol.39Issue(32)：19869-19873,5.
不同水平植物油对肉牛生产性能·胴体和牛肉品质的影响
Effects of Different Levels of Mixed Plant Oils on Production Performance, Carcass and Beef Quality in Beef Cattle
摘要
Abstract
[Objective] To study the effects of mixed plant oils on production performance,carcass and beef quality in beef cattle. [ Method J Single-factor randomized blocks design was used. Sixteen healthy Yanbian yellow cattle (bulls) having close body weight were selected and randomly divided into four groups, four cattle per group. Bean oil, safflower oil and sunflower oil were mixed respectively at a proportion of 55% ,25% and 20%. The oil blend was added to the daily feed of beef cattle respectively at a proportion of 4% ,5% and 6%. The effects of different levels of mixed plant oils on production performance,carcass and beef quality were investigated. [ Result] Compared with the control group,the plant oil groups had significantly higher feed intake (P <0. 05 ), non-significantly higher efficiency of feed utilization, and significantly lower digestive rate of coarse fiber and calcium ( P < 0. 05). With the increasing levels of plant oils, the digestive rate of dry matter showed a decreasing trend. The digestive rate of dry matter was significantly lower in the plant oil group at a level of 6% than in the control group (P < 0.05 ). The plant oil had no effect on the digestive rate of crude protein, ether extract, crude ash, nitrogen-free extract and phosphorus. With the increasing levels of plant oils, the serum content of high-density lipoprotein showed an increasing trend. The serum content of high-density lipoprotein was significantly higher in the plant oil group at a level of 6% than in the control group ( P < 0.05 ). With the increasing levels of plant oils, the content of total cholesterol showed an increasing trend, whereas the content of low-density lipoprotein showed a decreasing trend. Moreover,other indicators did not change significantly. The plant oil groups had larger eye muscle area and better beef quality than the control group. The content of crude protein and ether extract in beef increased with the increasing levels of plant oils. [ Conclusion ] The mixed plant oils added to the daily feed decreases intake and digestive rate of coarse fiber and calcium but have no remarkable effect on production performance of beef cattle. The addition also increases eye muscle area and improves beef quality, thereby improving quality of carcass and beef. The proportion of the mixed plant oils should be added at a proportion lower than 5%.关键词
植物油/肉牛/生产性能/胴体/牛肉品质Key words
Plant oil/Beef cattle/Production performance/Carcass/Beef quality分类
农业科技引用本文复制引用
夏广军,严昌国,刘成名..不同水平植物油对肉牛生产性能·胴体和牛肉品质的影响[J].安徽农业科学,2011,39(32):19869-19873,5.基金项目
国家科技支撑计划“优质肉牛产业化关键技术研究与开发—地方特色肉牛新品系培育”(2007BAD55B01). （2007BAD55B01）
