Department of Animal Science, Université Laval, Québec, Québec, Canada, G1V 0A6.
UBC Dairy Education and Research Centre, University of British Columbia, Agassiz, British Columbia, Canada, V0M 1A2.
J Dairy Sci. 2018 Mar;101(3):2350-2358. doi: 10.3168/jds.2017-13315. Epub 2017 Dec 28.
Improving animal welfare on farm can sometimes require substantial financial investments. The Canadian dairy industry recently updated their Code of Practice for the care of dairy animals and created a mandatory on-farm animal care assessment (proAction Animal Care). Motivating dairy farmers to follow the recommendations of the Code of Practice and successfully meet the targets of the on-farm assessment can be enhanced by financial gain associated with improved animal welfare. The aim of the current study was to evaluate the association between meeting or not meeting several criteria from an on-farm animal welfare assessment and the farms' productivity and profitability indicators. Data from 130 freestall farms (20 using automatic milking systems) were used to calculate the results of the animal care assessment. Productivity and profitability indicators, including milk production, somatic cell count, reproduction, and longevity, were retrieved from the regional dairy herd improvement association databases. Economic margins over replacement costs were also calculated. Univariable and multivariable linear regression models were used to evaluate the associations between welfare and productivity and profitability indicators. The proportion of automatic milking system farms that met the proAction criterion for hock lesions was higher compared with parlor farms and lower for the neck lesion criterion. The proAction criterion for lameness prevalence was significantly associated with average corrected milk production per year. Average days in milk (DIM) at first breeding acted as an effect modifier for this association, resulting in a steeper increase of milk production in farms that met the criterion with increasing average DIM at first breeding. The reproduction and longevity indicators studied were not significantly associated with meeting or not meeting the proAction criteria investigated in this study. Meeting the proAction lameness prevalence parameter was associated with an increased profitability margin per cow over replacement cost by $236 compared with farms that did not. These results suggest that associations are present between meeting the lameness prevalence benchmark of the Animal Care proAction Initiative and freestall farms' productivity and profitability. Overall, meeting the animal-based criteria evaluated in this study was not detrimental to freestall farms' productivity and profitability.
改善农场动物福利有时需要大量的资金投入。加拿大乳制品行业最近更新了他们的奶牛动物护理规范,并创建了一个强制性的农场动物护理评估(proAction Animal Care)。通过与提高动物福利相关的经济收益,可以激励奶牛养殖户遵循规范的建议,并成功实现农场评估的目标。本研究的目的是评估在农场动物福利评估中满足或不满足几个标准与农场的生产力和盈利能力指标之间的关系。使用了 130 个(20 个使用自动挤奶系统)自由卧床奶牛场的数据来计算动物护理评估的结果。从区域奶牛群改良协会的数据库中检索了生产力和盈利能力指标,包括牛奶产量、体细胞计数、繁殖和寿命。还计算了超过替代成本的经济利润。使用单变量和多变量线性回归模型来评估福利与生产力和盈利能力指标之间的关系。满足 proAction 牛蹄病变标准的自动挤奶系统奶牛场的比例高于畜栏奶牛场,而颈部病变标准的比例则较低。跛行流行率的 proAction 标准与每年平均校正奶产量显著相关。首次配种的平均泌乳天数(DIM)作为该关联的效应修饰剂,导致在满足标准的农场中,随着首次配种的平均 DIM 的增加,牛奶产量的增加更为陡峭。所研究的繁殖和寿命指标与满足或不满足本研究中调查的 proAction 标准没有显著关系。与不满足跛行流行率参数的农场相比,满足 proAction 跛行流行率参数的农场每头奶牛的盈利能力超过替代成本增加了 236 美元。这些结果表明,满足 proAction 动物护理倡议的跛行流行率基准与自由卧床奶牛场的生产力和盈利能力之间存在关联。总体而言,满足本研究评估的基于动物的标准不会对自由卧床奶牛场的生产力和盈利能力造成损害。