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Estimating the Effects of Animal Health on the Performance of Feedlot Cattle

机译：评估动物健康对育肥牛性能的影响

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It is generally accepted that performance of feed-lot cattle is negatively impacted as health problems increase. The magnitude of impact that health problems have on overall or specific performance parameters is not well defined for feedlot cattle. This study determined the effect of animal health on the performance of feed-lot cattle. Multiple regression models were developed to aid in the performance analysis for feed conversion, average daily gain, added cost and cost of gain. Results of this study showed that for each percentage increase in mortality in a pen of cattle the feed conversion ratio increased by 0.27 pounds (Ib) (0.12 kg), the average daily gain decreased 0.08 Ib (0.036 kg) per day and added costs increased 1.00 per dollar head. Foreach percentage increase in treatments for a pen of cattle, death loss increased by 0.143%. A 10% treatment rate would equate to a 1.7% death loss. These data should be useful to estimate performance of fed cattle. The study confirms and quantifies the negative effect of adverse health on fed-cattle performance.
机译：人们普遍认为，随着健康问题的增加，饲养场牛的生产受到负面影响。对于饲养场牛来说，健康问题对总体或特定性能参数的影响程度尚不明确。这项研究确定了动物健康对饲喂牛性能的影响。开发了多个回归模型来帮助进行饲料转化，平均日增重，增加的成本和增值成本的性能分析。这项研究的结果表明，每增加一头牛的死亡率，饲料转化率每增加0.27磅（Ib）（0.12 kg），平均日增重就减少0.08 Ib（0.036 kg），增加的成本增加每美元$ 1.00。每头牛的处理量每增加百分之百，死亡损失增加0.143％。 10％的治疗率相当于1.7％的死亡人数。这些数据应有助于评估饲喂牛的生长性能。该研究证实并量化了不利健康对牛饲养性能的负面影响。

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