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:任志强 岳瑞平 Ren Zhiqiang;Yue Ruiping(Shouyang Veterinary Hospital,Shouyang 031700,Shanxi,China;Shouyang Animal Husbandry and Veterinary Bureau,Shouyang 031700,Shanxi,China)
机构地区:[1]寿阳县兽医院,山西寿阳031700 [2]寿阳县畜牧兽医局,山西寿阳031700
出 处:《农业技术与装备》2018年第4期90-91,94,共3页Agricultural Technology & Equipment
摘 要:在奶牛场中,高产奶牛久配不孕是一个常年困绕奶农的棘手问题,奶牛一旦患病,不仅治疗周期长,治疗费用高,还严重影响养殖户的经济效益。文章通过多年各项数据的积累、分析,总结提出了该病发生的常见原因、类型和治疗方法。In dairy farms, high yielding dairy cows are chronically infertile is a perennial problem for dairy farmers. Once the cow is ill, not only the treatment cycle is long and the treatment cost is high, but also seriously affects the economic benefit of the farmers. Through the accumulation and analysis of many years of data, this paper summarizes the common causes, types and treatment methods of the disease.
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:216.73.216.90