Veterinary Research and Consulting Services, LLC, Stillwater, OK 74075, USA.
Anim Health Res Rev. 2009 Dec;10(2):105-8. doi: 10.1017/S1466252309990107.
The risk of bovine respiratory disease (BRD) has a significant effect on the value of cattle in the marketplace. Calves sold in larger groups have $6.37/45.45 kg more value than those sold as singles or in small groups. Morbidity is higher in unweaned commingled calves than those marketed in groups more than 45 days following weaning. Calves with an aggressive disposition have significantly less value than docile calves, due largely to depressed performance and less carcass value. The value of cattle in the marketplace can be improved by offering larger, uniform lots of cattle that have been weaned at least 45 days. Cattle that suffer BRD in the feedlot have from $23.23 to $151.18 less value than those remaining healthy.
牛呼吸道疾病（BRD）的风险对牛在市场上的价值有重大影响。与单独出售或小批量出售相比，以较大群体出售的犊牛每 45.45 公斤多 6.37 美元。与在断奶后 45 天以上分组上市的犊牛相比，未断奶的混合犊牛发病率更高。由于性能下降和胴体价值降低，攻击性较强的犊牛的价值明显低于温顺的犊牛。通过提供更大、更均匀的断奶至少 45 天的牛群，可以提高牛在市场上的价值。在育肥场患 BRD 的牛比保持健康的牛价值低 23.23 至 151.18 美元。
