Griffin D
University of Nebraska, Great Plains Veterinary Educational Center, Clay Center, USA.
Vet Clin North Am Food Anim Pract. 1997 Nov;13(3):367-77. doi: 10.1016/s0749-0720(15)30302-9.
The data presented consistently demonstrated the cost of BRD from weaning to the packers to be approximately 7% of the total production cost when compared to animals with health respiratory tracts. As a clinician it is distressing to feel that we cannot accurately identify all the animals that require treatment. Greater emphasis must be placed on prevention of BRD.
与呼吸道健康的动物相比，所呈现的数据一致表明，从断奶到出栏期间牛呼吸道疾病（BRD）的成本约占总生产成本的7%。作为一名临床医生，感觉无法准确识别所有需要治疗的动物令人苦恼。必须更加重视牛呼吸道疾病的预防。
