Straw B E, Tuovinen V K, Bigras-Poulin M
Diagnostic Laboratory, New York State College of Veterinary Medicine, Cornell University, Ithaca 14853.
J Am Vet Med Assoc. 1989 Dec 15;195(12):1702-6.
The data from studies of pneumonia, in which growth rate and feed conversion were measured, were examined with respect to the expected change in feed efficiency associated with a specific reduction in growth rate attributable to pneumonia in a swine herd. Information from 5 other studies was used to determine the expected reduction in growth rate that would be associated with the severity of pneumonia in the herd as determined by lesions recorded at slaughter. Together these calculations provide a reasonable estimation of the economic loss associated with pneumonia in a swine herd.
对肺炎研究中的数据进行了检查，这些研究测量了生长速率和饲料转化率，涉及猪群中因肺炎导致生长速率特定降低而预期的饲料效率变化。来自其他5项研究的信息用于确定与屠宰时记录的病变所确定的猪群肺炎严重程度相关的预期生长速率降低。这些计算共同提供了对猪群中与肺炎相关的经济损失的合理估计。
