Herd- and cow-level prevalence of foot lesions in Ontario dairy cattle
Herd- and cow-level prevalence of foot lesions in Ontario dairy cattle
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DOI：
10.3168/jds.2008-1135
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发表时间：
2008-10-01
影响因子：
3.5
通讯作者：
Kelton, D. F.
中科院分区：
文献类型：
--
作者：
Cramer, G.;Lissemore, K. D.;Kelton, D. F.
这项横断面研究的目的是确定安大略奶牛11个足部病变的平均水平和奶牛水平的患病率估计。从2004年3月至2005年5月，在204个安大略奶牛群的13,530头奶牛上，通过5个蹄修剪器记录了足部病变。自由栏舍和并列栏舍之间存在显著差异。在自由畜栏系统中，46.4%的奶牛有足部病变，而在并列畜栏中有25.7%的奶牛有足部病变。指皮炎是最常见的病变，在领带摊位，发生在9.3%的奶牛和69.7%的牛群，而在自由摊位牛群，22.7%的奶牛和96.7%的牛群受到影响。最常见的蹄角病变是溃疡和溃疡，分别为7.7%和4.7%，在扎栏住房和11.0%和9.2%，在自由栏住房。在自由畜栏中，2.2%的奶牛使用足块进行治疗，在束缚畜栏中，0.3%的奶牛使用足块进行治疗。蹄角病变组内相关系数为9.5 ~ 17.3，感染性病变组内相关系数为28.0 ~ 38.7。总之，在安大略，蹄修剪时诊断的足部病变很常见，蹄角病变的适当治疗率很低。
The objectives of this cross-sectional study were to determine herd-level and cow-level prevalence estimates for 11 foot lesions in Ontario dairy cattle. Foot lesions were recorded by 5 hoof trimmers on 13,530 cows in 204 Ontario dairy herds from March 2004 to May 2005. Significant differences existed between free-stall and tie-stall housing. In free-stall housing systems, 46.4% of cows had a foot lesion, compared with 25.7% of cows in tie-stall barns. Digital dermatitis was the most common lesion in tie stalls, occurring in 9.3% of cows and 69.7% of the herds, whereas in free-stall herds, 22.7% of cows and 96.7% of the herds were affected. The most common hoof horn lesions were hemorrhages and ulcers, at 7.7 and 4.7% in tie-stall housing and 11.0 and 9.2% in free-stall housing, respectively. Foot blocks were used to treat 2.2% of cows in free stalls and 0.3% in tie stalls. Intraclass correlation coefficients ranged from 9.5 to 17.3 for hoof horn lesions and 28.0 to 38.7 for infectious lesions. In summary, foot lesions diagnosed at the time of hoof trimming are common in Ontario, and appropriate treatment for hoof horn lesions is low.