ISSUE FOCUS 34 FEED & ADDITIVE MAGAZINE June 2024 “Diet plays a crucial role in maintaining cow health and immune function. A wellbalanced and properly formulated diet can support rumen health and optimize the cow's ability to combat lameness challenges, including digital dermatitis.” Heat stress poses a significant threat to the health and performance of cows, often leading to various issues, including lameness problems such as digital dermatitis. Digital dermatitis is a common hoof condition that affects dairy cattle worldwide, causing pain and discomfort, and impacting overall productivity. According to Wisconsin State Farmer, it has been reported on 70 percent of all U.S. dairies and on 95 percent of large operations comprising 500 cows or more. To effectively manage digital dermatitis and minimize its negative consequences, it is crucial for dairy producers and managers to adopt appropriate strategies and practices. In this article, we will explore some insightful management tips that can help overcome digital dermatitis and enhance the well-being of cows. Heat stress has a dramatic impact on cow health and performance. When a cow has been through heat stress, lameness issues could surface including digital dermatitis. Heat stress is a pervasive concern in the dairy industry, particularly in regions with hot and humid climates. When cows are exposed to high temperatures and humidity, their physiological systems are strained, leading to reduced feed intake, altered metabolism, and compromised immune function. These heat-induced challenges can weaken the cow's natural defense mechanisms, making them more susceptible to various diseases, including digital dermatitis. Digital dermatitis, also known as hairy heel warts, is a highly contagious bacterial infection affecting the skin of the hooves, primarily the rear feet of dairy cattle. It is characterized by painful lesions, redness, swelling, and foul-smelling discharge. The condition not only causes discomfort and lameness but also results in reduced milk production and decreased fertility, thereby posing significant economic losses to producers. The M-stages scoring systems, developed by Dr. Dörte Döpfer from the University of Wisconsin, Madison, is an effective way to diagnose and monitor digital dermatitis. This system classifies cows showing signs of digital dermatitis into one of five disease stages: M1, M2, M3, M4, and M4.1 (in addition, healthy digital skin is classified as M0). BEAT THE HEAT, SPARE THE FEET: A PROACTIVE APPROACH TO LAMENESS Jeff Wheeler Key Account Manager Ruminant NA Cargill Animal Nutrition
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