Tarabla H D, Dodd K
Department of Farm Animal Clinical Studies, University College Dublin, Ballsbridge, Ireland.
Br Vet J. 1990 Mar-Apr;146(2):157-64. doi: 10.1016/0007-1935(90)90008-Q.
A survey was carried out in a random sample of 123 dairy farms from the east of Ireland. The monthly mean production per cow was 315 l of milk and 11.5 kg of fat. The mean log herd somatic cell count was 5.45 (arithmetic mean = 372,573 cells/ml), with almost 50% of the monthly counts over 300,000 cells/ml in a 12-month period. Bivariate and multivariate analysis was performed to assess the relative impact of the personal characteristics of the farmer and the management policies he applied on the amount and quality of the milk produced. In five out of six models the group of variables related to farmers' attitudes, values, and sociodemographic profile explained a similar or greater amount (between 14.44 and 34.35%) of the variation of farm performance than the group of management variables (between 14.33 and 25.99%) as measured by the R2. These results stress the importance of the human factors in explaining variation in farm performance.
对爱尔兰东部123个奶牛场的随机样本进行了一项调查。每头奶牛的月平均产量为315升牛奶和11.5千克脂肪。牛群体细胞计数的平均对数值为5.45（算术平均值 = 372,573个细胞/毫升），在12个月的期间内，几乎50%的月度计数超过300,000个细胞/毫升。进行了双变量和多变量分析，以评估农民的个人特征及其所采用的管理政策对所产牛奶的数量和质量的相对影响。在六个模型中的五个模型中，与农民态度、价值观和社会人口统计学特征相关的变量组，比管理变量组（R²测量值在14.33%至25.99%之间）解释了农场绩效变化的相似或更大比例（在14.44%至34.35%之间）。这些结果强调了人为因素在解释农场绩效变化方面的重要性。
