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:岳理[1] 姜润深[1] 耿照玉[1] 杨秀娟[1] 袁绍友[2] 刘春喜[2]
机构地区:[1]安徽农业大学动物科技学院,安徽合肥230036 [2]安徽省皖西白鹅原种场,安徽六安237005
出 处:《河北农业科学》2008年第5期81-82,共2页Journal of Hebei Agricultural Sciences
基 金:安徽省"十一五"科技攻关重点项目(06013039A);安徽省科技厅自然科学基金(2005kjl33zd)
摘 要:随机选择皖西白鹅母鹅210只,测定个体产蛋量和开产前增重。结果表明:在增重率为1?-5%比在其他4个增重率范围内的鹅开产蛋重平均值低7-15 g,差异显著(p〈0.05);产前增重率〉20%的产蛋量为18.5±4.7枚,较平均值低5-6枚,差异显著(p〈0.05)。个体产蛋为20-30枚的占群体50%左右。2-3月份为皖西白鹅产蛋高峰期,产蛋率均超过25%。Two hundred and ten Wanxi white goose female goose were selected to determine the individual production amount and weight-increasing before production, The result showed that the average value of primary egg weight of goose weight-increasing ratio for 1% -5% low 7- 15 g than the other 4 weight-increasing scopes. Difference is notable (p 〈 0. 05) , The prenatal period increases specific gravity over 20% whose produce amount of egg was 18. 5 ±4. 7, which was lower than average value 5 - 6. Difference is notable (p 〈 0, 05 ) , One half of the population that individual production amount came to20 -30. On February and March, the Wanxi white goose produces egg were in peak-hour, whose laying rate exceeded 25%.
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:216.73.216.15