Clinical Study of Simultaneous Events of Thin Sole & Heel Horn Erosions in Newborn Heifers
2019
Bashiri Dezfouli, Ali | Ghamsari, Seyed Mehdi | Nowrouzian, Iradj
BACKGROUND: Lameness is regarded as a serious issue in dairy cattle which can ultimately lead to a drastic reduction in milk production as well as conception, and the possibility of early removal of cattle from the herd. Short claw and thin sole play the chief role in excessive pressure on the heel and lateral grooves, which in turn are the direct consequences of heel erosion and lameness. OBJECTIVES: Current study intended to investigate the simultaneous occurrence of these two events at epidemic proportions in cattle. METHODS: This study was performed in 110 Holstein newborn heifers. Lame cows were chosen based on the fact sheet approved by AABP, (the American Association of Bovine Practitioners). The “Thin sole” criteria included a length of ˂7.5 cm at the posterior wall, along with ˂5 cm in sole (measured by claw check). Existence of dark V-shape lesions in lateral grooves was considered as heel horn erosion. RESULTS: In 50 newborn heifers, thin sole and lateral grooves ulcer which affect rear limb digits almost equally, were diagnosed and clinically approved. The lowest posterior wall (66.54 ± 1.02 mm) and the lowest sole thickness (43.98 ± 1.78 mm) were observed in the left hind limb. CONCLUSIONS: According to the results of this study, these two above mentioned conditions are called “New Concrete Disease” and the lameness due to these two lesions was clinically considered.
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