ISSUE FOCUS 26 FEED & ADDITIVE MAGAZINE June 2023 In another study done during the warm summer months on a large commercial dairy in Mexico (field trial 2020), the researchers looked to determine the effects of feeding a postbiotic to lactating Holstein dairy cows. They observed that cows fed a postbiotic had reduced body temperature compared to Control cows during the time of the day when body temperature was increasing. Consult with your nutritionist about what ration changes might be appropriate for warmer temperatures, including the addition of a postbiotic to optimize rumen health. In conclusion, heat stress in dairy cows can have serious negative impacts on both rumen and hoof health. In fact, according to Pennsylvania State University, in the United States, the prevalence of lameness on dairies ranges from 13 to 55%. However, there are strategies that can be implemented to help prevent and control the negative effects of heat stress. Proactive measures such as ensuring adequate water availability, providing proper shade, frequent access to fresh feed, and incorporating effective postbiotics can help in combating the harmful impacts of heat stress on cow health. It is important for farmers and industry professionals to prioritize heat abatement strategies to maintain optimal herd health and prevent dairy cow lameness from showing up in the fall. About Jeff Wheeler, M.S. As National Accounts Manager, Ruminant Field Technical Specialist, Jeff Wheeler is responsible for providing sales and technical leadership for Diamond V’s business in North America. Wheeler attended the University of Georgia (UGA) in Athens, graduating with a B.S. in Dairy Science. He then continued his education at UGA and received his M.S. in Ruminant Nutrition. He brings over 20 years of dairy industry expertise to his position at Diamond V. Body Temperature Control Postbiotic Milking Treatment: P= 0.02 Treatment*time: P < 0.00.1 * P <0.05 Pre- and post-cooling occured around milking times. Represents times for both farms. 103.0 102.5 102.0 101.5 101.0 100.5 Body Temperature, °F Hour of the Day 0 1 2 3 4 5 6 7 8 9 10 11 121314 151617 18192021222324 120 100 80 60 40 20 0 SCC (x 1000) P1 1 2 3 4 5 6 7 Day Control Postbiotic Treatment, P < 0.01 Time, P = 0.58 Time* Treatment, P= 0.92 Immune Responses: Somatic Cell Count
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