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:红霞[1] 敖日格乐[1] 王纯洁[1] 吴德胜[1] 染旭[1]
机构地区:[1]内蒙古农业大学动物科学与医学学院,内蒙古呼和浩特010018
出 处:《畜牧兽医杂志》2008年第3期7-9,12,共4页Journal of Animal Science and Veterinary Medicine
基 金:国家教育部回国人员科研启动基金
摘 要:本文对双翅目昆虫侵袭时,奶牛个体所表现的护身行为差异性进行了研究。试验牛按胎次,产奶量相近的原则,选择了18头成牛健康的荷斯坦奶牛。试验前将试验牛拴系固定后,采用靠近探测法和触摸体表法,根据牛的具体行为反应程度将期分为温顺型、微敏感型、敏感型和神经质型等。试验期,每日跟踪观察1 h,并记录每5 min内各种类型牛的护身行为出现次数和飞来昆虫数目。试验证明:当奶牛受到双翅目昆虫侵袭时诱发的护身行为在个体之间的差异。神经质型的牛体表有少量双翅目昆虫飞来时,反应非常敏感;而温顺型牛对双翅目昆虫的袭击表现的护身反应很消极。This thesis researches the differences of cows grooming behavior when many pest—flies appear, chosen 18 healthy holstein cow's which are at the same age of fetal times and approximate milk production,we have divided the temperament of cow into four parts, using the methods of close exploration and touching;mild, slightly restless, restless and nervous. We have watched for one hour every day, recording the times of grooming behavior and the number of pest--flies. In this study, the cow "s grooming behavior is different when may Pest--flies appear. Thc grooming behavior of nervous cow's against pest--flies are very intense when few pest--flies appear. But the grooming behavior of mild cow's against pest--flies are very tranquil when many pest--flies apper.
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