跗关节损伤的侧别和跛行对荷斯坦奶牛躺卧行为及躺卧侧别的影响
The Effect of Hock Injury Laterality and Lameness on Lying Behaviors and Lying Laterality in Holstein Dairy Cows.
作者信息
Eberhart Nicole L, Krawczel Peter D
机构信息
Department of Animal Science, University of Tennessee, 2506 River Dr. 258 Brehm Animal Science Knoxville, Knoxville, TN 37996, USA.
出版信息
Animals (Basel). 2017 Nov 17;7(11):86. doi: 10.3390/ani7110086.
Lactating dairy cattle divide their lying equally between their left side and their right side. However, discomfort, such as pregnancy and cannulation, can cause a cow to shift lying side preference. The objective of this study was to determine the effect of lameness and hock injuries on lying behaviors, particularly lying laterality, of lactating dairy cows. Cows from four commercial farms in eastern Croatia that had lying behavior data, health score data, and production records were used in the study. Health scores including hock injuries and locomotion were collected once per cow. Severely lame cows had greater daily lying time compared to sound cows and moderately lame cows. Overall, cows spent 51.3 ± 1.2% of their daily lying time on the left side. Maximum hock score, locomotion score, hock injury laterality, or parity did not result in lying laterality differing from 50%.
泌乳奶牛在左侧和右侧躺卧的时间相同。然而，不适，如怀孕和插管，会导致奶牛改变躺卧偏好的一侧。本研究的目的是确定跛足和跗关节损伤对泌乳奶牛躺卧行为的影响，特别是躺卧的侧别。研究使用了来自克罗地亚东部四个商业农场的奶牛，这些奶牛有躺卧行为数据、健康评分数据和生产记录。每头奶牛都收集了包括跗关节损伤和运动能力在内的健康评分。与健康奶牛和中度跛足奶牛相比，严重跛足的奶牛每天躺卧时间更长。总体而言，奶牛每天有51.3±1.2%的躺卧时间是在左侧。最大跗关节评分、运动评分、跗关节损伤侧别或胎次并未导致躺卧侧别与50%有差异。
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