ARTICLE FEED & ADDITIVE MAGAZINE December 2023 69 or alterations in mammary cell metabolism and survival, possibly extending the lifespan of mammary cells or reducing cell death. Interestingly, cows receiving prepartum rumen-protected choline also produced higher colostrum yields while maintaining colostrum quality. Dr. Bradford notes, "Our recent study revealed an impressive 80% increase in colostrum yield. Many producers have shown interest in choline supplementation for the potential to improve colostrum yield, addressing their fall colostrum-related issues." Dr. White underscores the importance of this finding, as colostrum is crucial for calf health, stating, "Prepartum rumen-protected choline-treated cows yielded 2 kg more colostrum with an average colostrum quality exceeding a 24,6 percent Brix score." Another noteworthy discovery that Santos emphasizes often goes unnoticed is that cows exhibit a positive response to rumen-protected choline, regardless of their body condition score when they commence supplementation during the prepartum phase. Santos challenges the prevailing belief that choline should only be administered to overweight, over conditioned cows, describing it as a dogma that the industry should discard. He asserts that even cows with a low body condition score can benefit from supplementing rumen-protected choline, particularly in terms of enhancing milk production. Santos advocates for a shift in perspective among nutritionists and producers, likening choline to other essential nutrients in a cow's diet, such as vitamins, minerals, and amino acids. White emphasizes that every farm should conduct return on investment assessments tailored to their specific circumstances, and in most instances, the advantages of choline supplementation in terms of milk production amply justify the practice. This, in turn, yields benefit not only in long-term milk production but also in colostrum quantity and calf growth, constituting additional advantages. Bradford underscores the importance of revisiting the potential of supplementing choline, especially in light of the recent data from the past five years. He encourages those who may have previously overlooked choline due to a perceived absence of metabolic issues to reconsider its utilization, highlighting its potential to enhance productivity. White points out the variability in efficacy among different rumen-protected products, emphasizing the significance of having comprehensive research data to inform decision-making in this regard.
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