ISSUE FOCUS 36 FEED & ADDITIVE MAGAZINE June 2023 About Erika Paiva Graduated with a degree in veterinary medicine from the State University of Londrina - Brazil in 1996, and did a MBA in Marketing in 2014. Before joining Phileo, she gathered 10 years of experience as independent consultant for beef and milk livestock farms and 9 years of experience as product manager, production manager and technical manager for a premix company in Brazil. tion of somatic cell count (SCC) in dairy cows has also been linked to the combined use of Actisaf® and Safmannan® in trials carried out on 8 Dutch dairy farms, where the SCC of supplemented cows was lowered from a pre-trial average of 280,000 per farm to below 200,000. Selsaf®, given to dairy cows which were exposed to THI 72 for 9 weeks, delivered a significant reduction in rectal temperatures and respiratory rates, compared with cows in an inorganic selenium group. Selsaf® was also shown to significantly lower SCC in the treated cow group. CONCLUSION Many and varied management approaches have been developed to help alleviate the impact of heat stress with the use of yeast-based products being seen increasingly as a promising protection and treatment solution. Live yeast, yeast postbiotic and enriched selenium yeast all present themselves as strong candidates to help farmers keep cows healthy and productive in the face of an ever more demanding global climate. *p = 0.007 **p < 0.001 Sodium selenite RR, breaths/min 64 62 60 58 56 54 52 38.9 38.8 38.7 38.6 38.5 38.4 38.3 RT, °C 62.4 56.6* 38.9°C 38.6°C** Selsaf® Graphic 2. Selsaf enhances wellbeing under heat stress conditions Selsaf®, given to dairy cows which were exposed to THI 72 for 9 weeks, delivered a significant reduction in rectal temperatures and respiratory rates, compared with cows in an inorganic selenium group. Selsaf® was also shown to significantly lower SCC in the treated cow group.
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