King Michael E, Salman M D, Wittum Thomas E, Odde Kenneth G, Seeger Jon T, Grotelueschen Dale M, Rogers Glenn M, Quakenbush Gregory A
Animal Population Health Institute, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1681, USA.
J Am Vet Med Assoc. 2006 Nov 1;229(9):1389-400. doi: 10.2460/javma.229.9.1389.
To quantify effects of certified health programs on the sale price of beef calves sold through a livestock videotape auction service.
Longitudinal study.
26,502 lots representing 3,205,192 beef calves sold through a livestock videotape auction service between 1995 and 2005.
Data describing each lot of beef calves that were marketed from 1995 through 2005 by a livestock videotape auction service were obtained from sale catalogues. For each year of the study, multiple regression analysis was used to quantify the effect of certified health programs on sale price.
For each year of the study, beef calves that qualified for the 2 most intensive certified health programs sold for significantly higher prices, compared with prices for similar calves that were not in a certified health program, had not been vaccinated against respiratory tract viruses, and were not weaned before delivery. Price premiums for calves in the most intensive certified health program ranged from $2.47/100 lb (hundredweight [cwt]; 1 cwt equals 45.45 kg) in 1995 to $7.91/cwt in 2004. Price premiums paid for calves qualifying for the next most intensive certified health program ranged from $0.99/cwt in 1996 to $3.47/cwt in 2004. The percentage of the total number of lots in the 2 most intensive certified health programs increased over time.
Findings from this study indicated that implementation of the 2 most intensive certified health programs consistently increased the price of beef calves, and these price premiums increased over time.
量化经认证的健康计划对通过牲畜录像拍卖服务出售的肉牛犊销售价格的影响。
纵向研究。
1995年至2005年间通过牲畜录像拍卖服务出售的代表3,205,192头肉牛犊的26,502批。
从销售目录中获取1995年至2005年通过牲畜录像拍卖服务销售的每批肉牛犊的描述数据。在研究的每一年,使用多元回归分析来量化经认证的健康计划对销售价格的影响。
在研究的每一年,符合2种最严格认证健康计划的肉牛犊的售价明显高于未参加认证健康计划、未接种呼吸道病毒疫苗且在交付前未断奶的类似牛犊的价格。最严格认证健康计划中的牛犊价格溢价从1995年的每100磅2.47美元(英担[cwt];1英担等于45.45千克)到2004年的每英担7.91美元不等。符合次最严格认证健康计划的牛犊支付的价格溢价从1996年的每英担0.99美元到2004年的每英担3.47美元不等。2种最严格认证健康计划中的批次总数占比随时间增加。
本研究结果表明,实施2种最严格的认证健康计划持续提高了肉牛犊的价格,且这些价格溢价随时间增加。