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
作 者:孙永成[1] 王锋[1] 赵雪萍[1] 王正朝[1] 王子玉[1] 闫旭
机构地区:[1]南京农业大学动物胚胎工程技术中心,江苏210095 [2]江苏睢宁波尔种畜场
出 处:《中国草食动物》2005年第6期9-11,共3页China Herbivores
基 金:全国优势农产品重大技术示范推广项目(2004)
摘 要:将100只2~3月龄波杂羔羊(波杂一代)随机分为5组,每组初始平均体重18 kg左右,分别喂以5个不同营养水平的日粮,进行40天的育肥试验。结果表明,波杂羔羊的生长速度与日粮营养水平呈显著正相关(P<0.05)。在中能量水平下,适度提高蛋白水平能显著提高生长速度,且差异显著(P<0.05)。但在高能量水平下,提高蛋白水平对生长速度影响不大,差异不显著(P>0.05)。在同一蛋白水平下,提高能量水平能显著提高波杂羔羊的生长速度。通过经济效益分析发现,高营养水平的育肥羔羊经济效益也高。To determine the effect of nutrition level on the performance of the crossbreed kidlet of Boer goat and Xuhuai White goat, 100 goats, 2~3-month-old kidlet which were the first generation of crossbreed were randomly divided into 5 groups,and fed on diets as 5 different nutrition levels separately for 40 days. The results showed that the growth speed of crossbreed varied with the nutritional level significantly. The growth speed was influenced significantly(P〈0.05)by different protein level at intermediate energy and inapparently ( P〉 0.05) at high energy. Under the same protein level,the growth speed of kidlet could be improved significantly by increasing energy. The kidlet with higher nutrition level produced higher economic benefit.
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:216.73.216.8