Miyama Takeshi, Byaruhanga Joseph, Okamura Ikuo, Nagahata Hajime, Murata Ryo, Mwebembezi William, Muramatsu Yasukazu, Makita Kohei
Veterinary Epidemiology Unit, Graduate School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai Midorimachi, Ebetsu, Hokkaido 069-8501, Japan.
Animal Health Unit, School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai Midorimachi, Ebetsu, Hokkaido 069-8501, Japan.
J Vet Med Sci. 2020 Apr 15;82(4):488-493. doi: 10.1292/jvms.19-0588. Epub 2020 Mar 3.
A cross-sectional study was conducted to investigate the risk factors for sub-clinical mastitis (SCM) in Mbarara District, an intensive dairy production region of Uganda where hand-milking is dominant. In 30 farms, herd-level milking practices and SCM prevalence were studied. The SCM prevalences were 68.6% (417/608, 95% confidence interval (CI): 64.9-72.2%) and 39.2% (946/2,411, 37.3-41.2%) at the cow- and quarter-levels, respectively. A preventive factor for SCM was cow calmness at the end of milking (OR: 0.20, 95%CI: 0.05-0.79, P=0.021); a risk factor was rough teat-end (OR: 1.75, 95%CI: 1.14-2.68, P=0.011). Good cow hygiene was negatively associated with environmental mastitis (P=0.002). Appropriate hand-milking practices that avoid teat damage are expected to reduce SCM in Uganda.
在乌干达集约化奶牛生产区姆巴拉拉区开展了一项横断面研究，以调查亚临床型乳腺炎（SCM）的风险因素，该地区以手工挤奶为主。在30个农场中，研究了畜群水平的挤奶操作和SCM患病率。奶牛水平和乳区水平的SCM患病率分别为68.6%（417/608，95%置信区间（CI）：64.9 - 72.2%）和39.2%（946/2411，37.3 - 41.2%）。挤奶结束时奶牛的平静是SCM的一个预防因素（比值比：0.20，95%CI：0.05 - 0.79，P = 0.021）；一个风险因素是乳头末端粗糙（比值比：1.75，95%CI：1.14 - 2.68，P = 0.011）。良好的奶牛卫生与环境性乳腺炎呈负相关（P = 0.002）。预计在乌干达，避免乳头损伤的适当手工挤奶操作可降低SCM。
