Ji Karen Jiewei, Booth Richard E, Blackie Nicola
Pathobiology and Population Sciences, Animal Welfare Science and Ethics, Hawkshead Campus, Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire AL9 7TA, UK.
Animals (Basel). 2021 Apr 14;11(4):1120. doi: 10.3390/ani11041120.
The association between hoof lesions and lying behaviour was assessed on a Holstein-Friesian dairy farm in England. Twenty-nine cows were included in the study. Cows with claw horn disruption lesions (CHDL, = 8), soft tissue lesions (STL, = 6), and no lesions (NL, = 15) were assessed. Data were collected on parity, days in milk (DIM), and mobility scores. Cows were trimmed and treated, and lesions were recorded by a professional foot trimmer. Lying behaviour was assessed before and after claw trimming. The milking herd ( = 96) prevalence of lameness was 32.3%. Mobility was scored using the Agriculture and Horticulture Development Board (AHDB) Mobility Scoring system. Mobility scores were significantly different across lesions groups ( = 0.022). CHDL cows had a mean mobility score of 2.0 ± 0.9 (mean ± SD), STL were scored 1.2 ± 1.3, and NL cows were 0.9 ± 0.7. CHDL were associated with longer lying times (15.00 ± 1.04 h/d; = 0.0006) and shorter standing times (9.68 ± 2.38 h/d; = 0.0351) compared with NL lying times (11.77 ± 1.67 h/d) and standing times (12.21 ± 1.67 h/d). STL cows spent significantly less time lying (11.30 ± 2.44; = 0.0013) than CHDL but not NL cows. No significant differences were found with any of the other lying behaviours. After trimming, CHDL cows spent significantly less time lying down than before trimming (13.66 ± 0.98; = 0.0125). Cows with NL spent significantly more time lying down (12.57 ± 1.90; = 0.0398) and had a shorter minimum lying bout duration (0.17 ± 0.09; = 0.0236) after trimming. In conclusion, lying behaviour in dairy cattle was impacted by type of hoof lesions and hoof trimming.
在英国的一个荷斯坦 - 弗里生奶牛场评估了蹄部病变与躺卧行为之间的关联。该研究纳入了29头奶牛。对患有蹄角质破坏病变（CHDL，n = 8）、软组织病变（STL，n = 6）和无病变（NL，n = 15）的奶牛进行了评估。收集了胎次、泌乳天数（DIM）和运动评分的数据。奶牛进行了修剪和治疗，病变由专业蹄修剪师记录。在蹄修剪前后评估躺卧行为。泌乳牛群（n = 96）的跛行患病率为32.3%。使用农业和园艺发展委员会（AHDB）运动评分系统对运动进行评分。不同病变组的运动评分有显著差异（P = 0.022）。CHDL奶牛的平均运动评分为2.0±0.9（平均值±标准差），STL奶牛评分为1.2±1.3，NL奶牛为0.9±0.7。与NL奶牛的躺卧时间（11.77±1.67小时/天）和站立时间（12.21±1.67小时/天）相比，CHDL奶牛躺卧时间更长（15.00±1.04小时/天；P = 0.0006），站立时间更短（9.68±2.38小时/天；P = 0.0351）。STL奶牛躺卧时间（11.30±2.44；P = 0.0013）比CHDL奶牛显著少，但与NL奶牛无差异。在其他躺卧行为方面未发现显著差异。修剪后，CHDL奶牛躺卧时间比修剪前显著减少（13.66±0.98；P = 0.0125）。NL奶牛修剪后躺卧时间显著增加（12.57±1.90；P = 0.0398），最短躺卧时长缩短（0.17±0.09；P = 0.0236）。总之，奶牛的躺卧行为受蹄部病变类型和蹄修剪的影响。
