Sigl Shawna J, Van Os Jennifer M C, Burney Shaheer, Creutzinger Katherine C
Department of Animal and Food Science, University of Wisconsin-River Falls, River Falls, WI 54022.
Department of Animal and Dairy Science, University of Wisconsin-Madison, Madison, WI 53706.
J Dairy Sci. 2025 Apr;108(4):4049-4061. doi: 10.3168/jds.2024-25741. Epub 2025 Jan 30.
The nonlactation ("dry") period and first few weeks after calving are a crucial time in a dairy cow's life, which can greatly impact her welfare and success within a herd. Additionally, cow-calf separation has become a controversial topic in dairy production, and a knowledge gap exists regarding the time of calf removal from the cow on US dairy farms. A description of animal management practices during the dry period and early lactation can provide key information on whether recommended practices are being implemented and what can be changed to enhance the overall welfare of transition cows. The objective of this study was to characterize farmer-reported housing, management, and disease incidence of dairy cows from 60 d before to 30 d after calving on dairy farms in Wisconsin and Minnesota. Surveys were mailed to a random sample of 1,503 dairy producers in Wisconsin (n = 948) and Minnesota (n = 555). The survey included questions regarding farm demographics, cow management from 60 d before 30 d after calving, calf separation practices, and transition cow disease incidence. The response rate was 31% (466/1,503; Minnesota: n = 145, Wisconsin: n = 321) at the end of the 10-wk data collection period. Respondents had an average of 219.5 ± 712.3 (±SD) milking cows with a range of 2 to 12,000 milking cows. Cow management varied greatly between farms during the dry period and early lactation. The most common dry cow housing used was a close-up pen (38% of farms) and freestalls for both fresh (15.9%) and lactating cows (39.3%). Cows were moved into new pens 0 to 6 times (median = 2) during the 60 d before to 30 d after calving and approximately one-quarter of farms (26%) moved cows into new pens twice. Removal of calves from the calving pen was most commonly reported to occur less than 1 h (16.7% of farms), 1.1 to 2 h (22.3%), and 2.1 to 12 h (39.5%) after birth. Calf removal from the calving pen was reported to occur sooner after birth on farms with larger herds and when cows remained in the calving pen for less time after calving. Dystocia was reported to occur at a greater incidence than other transition diseases (7.0% ± 7.4), followed by retained placenta (6.4% ± 6.5). The results of this survey provide evidence that recommended care practices, such as using a calving pen and not overstocking a fresh cow pen, are being provided to dry and early-lactation cows on many dairy farms in this region. However, animal-based measures would be required to assess whether cows are in a good welfare state. Nonetheless, these results can help identify possible barriers to success and opportunities for improvement for the management and potential performance of dairy cows.
非泌乳期(“干奶期”)以及产犊后的头几周是奶牛生命中的关键时期,这会极大地影响其在牛群中的健康状况和生产效益。此外,奶牛与犊牛分离已成为奶牛生产中的一个争议性话题,在美国奶牛场中,关于犊牛从母牛身边移除的时间存在知识空白。描述干奶期和泌乳早期的动物管理实践,可以提供有关是否正在实施推荐做法以及可以做出哪些改变以提高围产母牛整体健康状况的关键信息。本研究的目的是描述威斯康星州和明尼苏达州奶牛场中农民报告的奶牛在产犊前60天至产犊后30天的饲养、管理和疾病发生率。调查问卷被邮寄给威斯康星州(n = 948)和明尼苏达州(n = 555)的1503名奶牛养殖户的随机样本。该调查包括有关农场人口统计学、产犊前60天至产犊后30天的奶牛管理、犊牛分离做法以及围产母牛疾病发生率的问题。在为期10周的数据收集期结束时,回复率为31%(466/1503;明尼苏达州:n = 145,威斯康星州:n = 321)。受访者平均拥有219.5 ± 712.3(±标准差)头泌乳奶牛,范围为2至12000头泌乳奶牛。在干奶期和泌乳早期,不同农场之间的奶牛管理差异很大。最常用的干奶牛舍是待产栏(38%的农场)以及新产母牛(15.9%)和泌乳母牛(39.3%)的自由牛舍。在产犊前60天至产犊后30天期间,奶牛被转移到新牛舍0至6次(中位数 = 2),约四分之一的农场(26%)将奶牛转移到新牛舍两次。最常报告的是在犊牛出生后不到1小时(16.7%的农场)、1.1至2小时(22.3%)和2.1至12小时(39.5%)将其从产犊栏中移出。据报告,在牛群规模较大的农场以及母牛产犊后在产犊栏中停留时间较短的农场,犊牛从产犊栏中移出的时间更早。据报告,难产的发生率高于其他围产疾病(7.0% ± 7.4),其次是胎衣不下(6.4% ± 6.5)。这项调查的结果表明,该地区许多奶牛场为干奶期和泌乳早期的奶牛提供了推荐的护理措施,例如使用产犊栏且不过度拥挤新产母牛舍。然而,需要基于动物的措施来评估奶牛是否处于良好的健康状态。尽管如此,这些结果有助于确定奶牛管理和潜在生产性能成功的可能障碍以及改进机会。