检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
机构地区:[1]西北民族学院动物料学系,甘肃兰州730030 [2]青海省畜牧厅,青海西宁810000
出 处:《中国奶牛》2002年第1期18-20,共3页China Dairy Cattle
摘 要:试验用营养酸模鲜茎叶替代奶牛部分精料观测其对泌乳牛的饲喂效果。试验共设三个试验组和一个对照组,其试验组营养政模的替代率分别为12.5%、25.0%及 37.5%,经三期 300天的饲喂,其结果为试验组比对照组头日产奶量分别高 0.96bd、2.25ab、2.67kg(P<0.01或 P<0.05),比对照组(CK)提高 7.7%、18.0%、21.3%;平均乳脂率分别提高 0.63A,0.35B,0.31B个百分点(P<0 .01或 P<0.05),比CK组提高17.3%、9.6%、8.5%。经济效益显著,适应性良好。试验证实,用营养酸模替代部分精料对提高奶牛泌乳量和改善牛奶品质及口感是有利的。This assay used new grown stem and leaves to subastitute part of the extractive feed, and notise the effect of its lactation ability. This assay has divided three assay groups and one contrast group, and the proportion of the substitute with Nutritious Rumex are 12. 0%, 25. 0% and 37. 5%. through 30 days(three stages). the results showed that the Average daily milk yield of the assay groups are more than that of the contrast group by 0. 96bd, 2. 25ab, 2. 67a(P<0.01 or P <0. 05 ), A. milkfat percentage each has improved 0. 63A, 0. 35B, 0. 31B(P<0.01 or P<0.05), its economic benefit is outstanding, and it's tasty. The assay proves that it is feasible and effective to substitute part of the extractive feed when we develop the cow industry, and will do good to improve the cow lactation contion content, milk quanlity and taste.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.222