NEWS 8 FEED & ADDITIVE MAGAZINE April 2023 Alltech, backed by more than 40 years of scientific research, announced that a new white paper, entitled “Organic selenium: A comparison of form, source and function” prepared by Dr. Richard Murphy, director of research has been published. The new white paper focuses on the varying stabilities of the different selenium sources currently on the market. It follows up on Dr. Murphy’s 2021 white paper release entitled “Organic trace minerals: Enhancing mineral bioavailability through chelation” which explored improved bioavailability with organic trace minerals (OTMs). “Organic selenium has been found to be a more effective source (than inorganic selenium products), resulting in an increased number of live young per animal, the stimulation of immune function, overall improvements in animal health, and an enhanced shelf life for meat, milk, and eggs,” said Dr. Murphy. “Peer-reviewed research has clearly shown that dietary intervention with organic selenium results in significantly enhanced production and health benefits for all species.” The numerous selenium sources available on the market today vary greatly in terms of their stability and shelf-life when included in premix and feed. Read more>> At the latest Smart Calf Rearing Conference in Kaiserslautern, Germany, the Lallemand Animal Nutrition team shared a study about the benefits of the specific yeast fractions combination YANG in rearing dairy calves during the pre-weaning period. Overall, growth performance and the health status of the neonates were improved, leading to a significant reduction of veterinary treatments. Clothilde Villot, Research Scientist with Lallemand Animal Nutrition, who presented the study explains: “High morbidity and mortality rates of calves during the pre-weaning period dramatically impact the sustainability of farms. The objective of this trial, conducted in partnership with University of Lublin, was to evaluate the efficacy of our specific association of yeast fractions (YANG) to support calf growth and health status in the pre-weaning period. The study showed improvement of the overall health and early growth of preweaned calves when they received YANG in milk replacer. Consequently, less therapeutic treatments were needed. These benefits could be explained by an enrichment of the beneficial gut microbiota of supplemented calves.” These benefits of the specific association of yeast fractions can be linked to its effects at the microbiota level. When the researchers looked at the calves’ fecal microbiota they found an increase in beneficial bacteria populations such as milk-associated bacteria Bifidobacteria or Lactobacillus and Akkermansia, which is associated with the stimulation of mucine production and immune system regulation. This could positively influence milk metabolism and reinforce the calves’ natural defenses. Read more>> Lallemand shares benefits of YANG on dairy calf microbiota and welfare Alltech publishes white paper comparing selenium sources
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