Department of Agricultural Food and Nutritional Science, University of Alberta, Edmonton, Alberta (Macmillan, Behrouzi, Colazo); Department of Large Animal Clinical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, Saskatoon (Gobikrushanth); Animal Health Laboratory, University of Guelph, Guelph, Ontario (Hoff).
Can Vet J. 2021 Mar;62(3):273-280.
The objective of this study was to determine the prevalence and associations of early postpartum health disorders with production, reproduction, and survivability in dairy cows in Alberta. Holstein cattle (N = 1096) from 11 commercial dairy farms in Alberta, Canada were enrolled. Cows were evaluated daily for clinical postpartum health disorders and a blood sample was collected once within 2 wk after calving to diagnose subclinical disorders. Overall, 61% of cows were diagnosed with at least 1 postpartum health disorder, with 25% of cows having multiple disorders. Of the cows with only 1 health disorder, 71% were classified as inflammatory and 29% as metabolic disorders. Cows with multiple disorders were at the greatest risk of reduced milk production, impaired fertility, and leaving the herd. Cows with an inflammatory disorder had reduced productive and reproductive performance, whereas cows with a metabolic disorder were at the greatest risk of mortality.
本研究旨在确定阿尔伯塔省奶牛产后早期健康障碍的流行情况及其与生产、繁殖和生存能力的关系。从加拿大阿尔伯塔省的 11 个商业奶牛场招募了 1096 头荷斯坦奶牛。每天对奶牛进行临床产后健康障碍评估，并在产后 2 周内采集一次血样以诊断亚临床障碍。总体而言，61%的奶牛被诊断出至少有一种产后健康障碍，25%的奶牛有多发性障碍。在仅有 1 种健康障碍的奶牛中，71%为炎症性障碍，29%为代谢性障碍。有多发性障碍的奶牛的产奶量、繁殖性能和离群风险最大。患有炎症性疾病的奶牛的生产和繁殖性能降低，而患有代谢性疾病的奶牛的死亡率最高。
