不同优质饲草对冷季安尕力巴犊牛饲喂效果的分析OA

To study the optimal combination of artificially cultivated high-quality forages for the feeding of An'galiba calves in confinement,40 An'galiba calves of 10 months old with similar weight,height,body length,chest girth,and cannon bone circ-umference were randomly selected for the experiment.The calves in experimental groups Ⅰ,Ⅱ,and Ⅲ were fed using a teth-ered feeding method,while group Ⅳ was grazed with supplementary feeding.Different combinations of wrapped silage forages were fed for 90 days.group Ⅰ(70％oat grass,20％red bean grass,10％sorghum hybrid sudangrass)gained 44.08 kg;groupⅡ(60％oat grass,40％red bean grass)gained 26.59 kg;group Ⅲ(60％oat grass,40％sorghum hybrid sudangrass)gained 24.06 kg;group Ⅳ gained-13.48 kg.The economic benefits were 1 667.5 yuan for group Ⅰ,810.5 yuan for group Ⅱ,706.5 yuan for group Ⅲ,and-813.5 yuan for group Ⅳ.The results showed that the best quality coarse fodder combination was more beneficial to the growth and development of Angus cross cattle in cold season compared with grazing and supplementary feeding group.