Fulwider W K, Grandin T, Rollin B E, Engle T E, Dalsted N L, Lamm W D
Department of Animal Sciences, Colorado State University, Fort Collins 80523, USA.
J Dairy Sci. 2008 Apr;91(4):1686-92. doi: 10.3168/jds.2007-0631.
The objective was to conduct a broad survey of dairy management practices that have an effect on animal well-being. Dairies were visited during the fall and winter of 2005 and 2006 in Wisconsin, Minnesota, Indiana, Iowa, and New York. Data were collected on 113 dairies on colostrum feeding, dehorning, tail-docking, euthanasia methods, producer statements about welfare, use of specialized calf-raising farms (custom), level of satisfaction with calf-raising by producers, and cow behavior. Calves were raised by the owner on 50.4% of dairies; 30.1% were raised on custom farms during the milk-feeding period, 18.6% were custom raised after weaning, and 1% sold calves with the option to buy them back as first-lactation heifers. A total of 51.8% of producers were very satisfied with their current calf-raising methods. Three feedings of colostrum were fed to the calves on 23.9% of dairies, 2 feedings on 39.8% of farms, 1 feeding on 31.0% of farms, and colostrum replacement products were fed on 5.3% of farms. Many farms (61.9%) provided 3.8 L at first feeding. Calves were dehorned at different ages by various methods. By 8 wk, 34.5% of calves were dehorned. By 12 wk, 78.8% of calves were dehorned. The majority of calves were dehorned by hot iron (67.3%). The remainder were dehorned by gouging (8.8%), paste (9.7%), saw (3.5%), or unknown by calf owner (10.6%). Anesthetic use was reported by 12.4% of dairy owners and analgesia use by 1.8%. Tail-docking was observed on 82.3% of dairies. The most common reported docking time was pre- or postcalving (35.2%). The second most commonly reported time was d 1 (15.4%). Rubber band was the most common method (92.5%), followed by amputation (7.5%). Three dairies amputated precalving, 1 at 2 mo and 3 at d 1 or 2. Cow hygiene was the most common reason given to dock (73.5%), followed by parlor worker comfort (17.4%) and udder health (1.0%). Producers reported 2.0% of cows obviously lame. Gun was the preferred euthanasia method (85.7%), followed by i.v. euthanasia (8.0%), live pick-up (1.8%), and nondisclosure (3.5%). Most producers (77.9%) stated that cows were in an improved environment as compared with 20 yr ago, whereas 8.0% stated conditions were worse, and 14.2% were undecided. Dairies with higher percentages of cows that either approached or touched the observer had lower somatic cell counts. The survey results showed management practices that were important for animal welfare.
目的是对影响动物福利的奶牛养殖管理实践进行广泛调查。2005年和2006年秋冬季节,对威斯康星州、明尼苏达州、印第安纳州、爱荷华州和纽约州的奶牛场进行了走访。收集了113个奶牛场关于初乳喂养、去角、断尾、安乐死方法、生产者关于福利的陈述、使用专业犊牛养殖场(委托养殖)情况、生产者对犊牛养殖的满意度以及奶牛行为的数据。50.4%的奶牛场由场主自行饲养犊牛;30.1%在喂奶期委托养殖场饲养,18.6%在断奶后委托养殖,1%出售犊牛并可选择买回作为头胎母牛。共有51.8%的生产者对其当前的犊牛养殖方法非常满意。23.9%的奶牛场给犊牛喂三次初乳,39.8%的农场喂两次,31.0%的农场喂一次,5.3%的农场使用初乳替代产品。许多农场(61.9%)在第一次喂食时提供3.8升初乳。犊牛在不同年龄通过不同方法去角。到8周龄时,34.5%的犊牛已去角。到12周龄时,78.8%的犊牛已去角。大多数犊牛通过热烙铁去角(67.3%)。其余的通过挖除(8.8%)、涂抹药膏(9.7%)、锯切(3.5%)或犊牛主人不清楚的方法(10.6%)去角。12.4%的奶牛场场主报告使用了麻醉剂,1.8%报告使用了镇痛药。82.3%的奶牛场观察到有断尾情况。报告的最常见断尾时间是产犊前或产后(35.2%)。第二常见的时间是第1天(15.4%)。橡皮筋是最常见的方法(92.5%),其次是截断(7.5%)。三个奶牛场在产犊前截断尾巴,1个在2月龄时截断,3个在第1天或第2天截断。奶牛卫生是断尾最常见的原因(73.5%),其次是挤奶厅工人的舒适度(17.4%)和乳房健康(1.0%)。生产者报告2.0%的奶牛明显跛行。枪击是首选的安乐死方法(85.7%),其次是静脉注射安乐死(8.0%)、活体拾捡(1.8%)和未披露(3.5%)。大多数生产者(77.9%)表示与20年前相比,奶牛的环境有所改善,而8.0%表示条件变差,14.2%不确定。接近或触碰观察者的奶牛比例较高的奶牛场,其体细胞计数较低。调查结果显示了对动物福利很重要的管理实践。