That holds true in the market. Based on several years of video-auction sales data, a Colorado State University study reported price premiums of $2.47 $7.91 per hundredweight 1995 to 2005 for calves that were weaned 45 days and had been vaccinated against BRD compared to similar calves that were not in a certified health program, were not weaned before shipment and had not been vaccinated against BRD.
Cattle disposition and BRD
Researchers at Iowa State University used a Disposition Scoring System to compare health and performance among docile, restless, and aggressive cattle. During the entire feeding period, average daily gain was greatest in calves classified as docile, followed by the restless group and the aggressive group. Morbidity rate was highest in docile cattle, but did not differ between the restless and aggressive cattle. Mortality rates were 1.09, 1.02, and 1.91 percent, respectively, for docile, restless, and aggressive cattle. Economic return was $62.19 lower for aggressive cattle than for docile cattle in this study. Much of this difference was attributed to increased death loss, increased ADG, and improved carcass quality grade.
Market Value Differences between Healthy and Sick Cattle
Iowa State University researchers studied the effects of BRD on economically important traits in 5,976 feedlot cattle. Incidence of BRD during the entire feeding period was 8.17 percent and total mortality was 1.43 percent with 49 percent of deaths due to BRD. This resulted in a decrease of $23.23, $30.15, and $54.01 in cattle treated once, twice, or three times or more, respectively, when compared to cattle not requiring treatment.