The total bacterial count of raw milk from Kunming Xuelan Milk Company,including 6 machine milking scale cow farms,6 machine milking cooperation cow farms and 6 hand milking farms were evaluated.

• 系统评价了昆明雪兰牛奶有限公司来自6个机械挤奶规模化奶牛场、6个机械挤奶奶牛合作社和6个手工挤奶奶站的原料奶的细菌总数。