ISSUE FOCUS FEED & ADDITIVE MAGAZINE June 2022 33 fecting growth performance and health, as well as longer-term consequences in negatively impacting meat quality or fertility. Risk monitoring, planning ahead (e.g. use of adapted feeding strategy) and adapted barn and herd management practices are essential to optimize production and help overcome heat stress challenges in beef. References: 1. Bouraoui R., Lahmar M., Majdoub A., et al., 2002. The relationship of temperature-humidity index with milk production of dairy cows in a Mediterranean climate. Animal Research, EDP Sciences, 2002, 51 (6), pp.479491. 10.1051/animres:2002036. hal- 00889824 2. Gatson, G. A., Gunn, P. J., Busby, W. D., Wiegand, B. R., Vander Ley, B. L., & Meyer, A. M. 2019. Effects of dry or wet conditions during the preweaning phase on subsequent feedlot performance and carcass composition of beef cattle. Translational Animal Science, 3(1), 168–171. https://doi.org/10.1093/tas/ txy095 3. Perdomo, M.C. et al. 2020. Effects of feeding live yeast at 2 dosages on performance and feeding behavior of dairy cows under heat stress. J. Dairy Sci., Vol. 103 (1) 325 – 339 4. Fike J. and Saker K. Virginia Tech. 2005 Immune function, oxidative stress, and antioxidants in lactating dairy cows. About Bruno Martin Bruno Martin is an agriculture Engineer specialized on ruminant nutrition. He has an experience in feed industry, farmers nutrition advising and overall management (comfort, barn engineering, health management). He mainly worked for leading French feed companies (premix, pelleted feed…). He has multiple experiences in formulation, field research, products development (mineral, pelleted feed…) and farming at an international level. Bruno Martin has a strong expertise nutrition and particularly in acidosis with mainly a practical point of view. He has been working with SMAXTEC © sensors in France and Europe for several years, and had overviewed more than 25 trials in commercial dairy and beef farms with Levucell I1077 (live yeast). These sensors allow to catch numerous data on rumen activity and health (acidosis, estimate of water intake according to rumen temperature drops…). All along these trials, numerous individual animal checking allowed to closely connect rumen parameters with visible signs (feet, nervousness…). Bruno Martin is involved in several field trials on calves, heat stress, beef production and meat sheep all around Europe... He’s focused on global approach on behavior, feeding and comfort management, meat quality in combination with current Lallemand solutions… Bruno Martin has been working for more than six years for Lallemand Animal Nutrition as technical support. In his previous jobs, he was a Lallemand customers for years. Figure 3: Effect of Melofeed and Alkosel on Blonde d’Aquitaine daily weight gain (Lallemand Animal Nutrition internal data. 2014.commercial farm, France)
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