DeGraves F J, Fetrow J
Department of Food Animal and Equine Medicine, College of Veterinary Medicine, North Carolina State University, Raleigh 27606.
J Am Vet Med Assoc. 1991 Aug 15;199(4):451-5.
Partial budget analysis of clinical coliform mastitis prevention supported vaccination of dairy cows with an Escherichia coli J5 vaccine. Increased profits of $57/cow lactation were predicted using a computer spreadsheet derived partial budget with generalized herd input data. Herd vaccination programs were predicted to be profitable when greater than 1% of cow lactations resulted in clinical coliform mastitis. Herd vaccination programs were predicted to be profitable at all herd milk production levels.
临床大肠埃希菌性乳房炎预防的局部预算分析支持使用大肠杆菌J5疫苗对奶牛进行接种。使用包含一般牛群输入数据的计算机电子表格得出的局部预算预测，每头奶牛泌乳期利润将增加57美元。当超过1%的奶牛泌乳期出现临床大肠埃希菌性乳房炎时，预计牛群接种计划将盈利。预计在所有牛群牛奶生产水平下，牛群接种计划都将盈利。
