牛场奶牛乳房炎的发病因素探究及其判别分析方程的建立

发布时间：2018-01-10 14:32

本文关键词：牛场奶牛乳房炎的发病因素探究及其判别分析方程的建立　出处：《中国兽医学报》2016年11期 　论文类型：期刊论文

【摘要】：利用2011年1月至2014年12月山东地区某牛场的奶牛生产性能测定(DHI)数据库及其乳房炎发病记录为数据集,通过sas统计分析软件,对胎次、泌乳天数、采样季节、采样年份、体细胞数、产奶量、乳脂率、乳蛋白率与乳房炎发病记录做逐步判别(Stepdisc)和glm相关性方差分析。结果显示:胎次、泌乳天数、采样季节、采样年份和体细胞数与乳房炎的发生显著相关。因此,综合与奶牛乳房炎发病密切相关的胎次、泌乳天数、采样季节、采样年份和体细胞评分建立了直观、相对准确的判定奶牛乳房炎发生的判别分析方程Y_0(未患乳房炎)和Y_1(患乳房炎),通过比较Y_0和Y_1的大小对未知个体牛是否患有乳房炎做出初步判断。此判断虽然不能对乳房炎的发生做出确诊,但能够帮助奶牛场管理者对奶牛群体进行宏观监测,从奶牛群体中筛选出发生乳房炎概率较大的作为重点监测对象。由此奶牛场能够尽早发现乳房炎,节约乳房炎检测成本,为乳房炎的及时控制与治疗提供科学理论依据,对DHI的推广和DHI报告的充分利用也具有重要意义。
[Abstract]:Determined by the production of dairy cows in a dairy in January 2011 to December 2014 in Shandong area (DHI) database and mastitis records for the data set by SAS statistical analysis software, the parity, lactation, seasonal sampling, sampling year, somatic cell count, milk yield, milk fat percentage, milk protein percentage and mastitis records stepwise discriminant (Stepdisc) and GLM correlation analysis of variance. The results showed: parity, lactation, sampling season were significantly correlated with the sampling number and year mastitis of somatic cells. Therefore, closely related to the comprehensive and cow mastitis parity, lactation days, seasonal sampling, sampling year and somatic cell score a intuitive and relatively accurate to determine the equation of Y_0 discriminant analysis of milk cow's mastitis (not mastitis) and Y_1 (mastitis), through the comparison of the Y_0 and Y_1 size of the unknown individual bovine mastitis do A preliminary judgment. This judgment can not make diagnosis of mastitis, but can help the managers to make dairy cows from macroscopical monitoring of population, cow populations were screened with mastitis probability is large as the focus of the monitoring objects. Thus the dairy can do early detection of mastitis mastitis detection, save cost, provide scientific basis for timely control and treatment of mastitis, and also has an important significance to make full use of the promotion of DHI and DHI report.

【作者单位】：山东省农业科学院奶牛研究中心;山西农业大学动物科技学院;
【基金】：国家“十二五”科技计划资助项目(2011BAD28B0203-02) 山东省科技发展计划资助项目(2013GNC11023) 济南市种业科技振兴计划资助项目(201210001) 济南市科技计划国际合作项目(201401353) 山东省现代农业产业技术体系牛产业创新团队项目(SDAIT-12-011-02)
【分类号】：S858.23
【正文快照】： 养牛业是中国畜牧业的重要组成部分,在国民经济和人民生活中地位突出,随着国民经济的发展和人们饮食观念的转变,具有营养、特色、保健等功能的乳品越来越成为现代消费的大趋势。而在奶业生产中,乳房炎是造成奶牛业损失最大的疾病之一,乳房炎会导致产奶量下降、乳成分及其理化

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