Abstract：
Claw disorders are a major problem for health, welfare, and economy in dairy production. This retrospective observational study investigated the association between cow-level prevalence of claw horn disruptive lesions and two different trimming methods - the traditional Danish Method (DAM) and the White Line Atlas Method (WLAM). Trimming records from four herds in Denmark over a 4-year period were analysed. Within each herd, claw trimming was performed with the DAM for the first 2 years, and the WLAM for the next 2 years. The data comprised 3316 claw trimmings of 1027 cows with the WLAM and 3898 claw trimmings of 1080 cows with the DAM. The association between claw trimming method and claw lesions was determined using binominal logistic analysis. There were significant differences between trimming methods for sole haemorrhage (odds ratio = 0.44), sole ulcer (odds ratio = 0.42), and white line separation (odds ratio = 0.64), with a lower prevalence during the period of trimming with the WLAM. No significant difference between trimming methods could be found in the occurrence of white line abscess or double sole. The lower prevalence of claw horn disruption lesions found in this study when cows were trimmed with WLAM justifies and necessitates further experimental studies of claw trimming methods to validate these findings.
摘要：
爪子疾病是健康的主要问题，福利,和乳制品生产的经济性。这项回顾性观察性研究调查了羊角破坏性病变的牛水平患病率与两种不同的修剪方法之间的关联-传统的丹麦方法（DAM）和白线地图集方法（WLAM）。分析了丹麦四个牛群在4年内的修剪记录。在每一群人中，在最初的两年里，用DAM进行了爪子修剪，以及未来两年的WLAM。数据包括使用WLAM的1027头母牛的3316爪修剪和使用DAM的1080头母牛的3898爪修剪。使用二元逻辑分析确定了爪修剪方法与爪病变之间的关联。足底出血的修剪方法之间存在显着差异（比值比=0.44），鞋底溃疡（比值比=0.42），和白线分离(赔率比=0.64)，在使用WLAM修剪期间患病率较低。在白线脓肿或双鞋底的发生上，修剪方法之间没有显着差异。在这项研究中发现，当用WLAM修剪母牛时，爪角破坏病变的患病率较低，这证明了这一点，并且有必要对爪修剪方法进行进一步的实验研究以验证这些发现。
