1. Selenium Supplementation
Selenium and vitamin E are essential nutrients that help protect animals from various diseases, especially in dairy cows. A deficiency in these nutrients can significantly weaken the cow's ability to fight off infections, particularly those affecting the udder. To support immune function, it is recommended that young cows receive 1000 IU of vitamin E and 2 mg of selenium per day 60 days before calving. During lactation, the daily intake should be reduced to 600-800 IU of vitamin E and 2 mg of selenium. Studies have shown that this supplementation can reduce the infection rate during calving by 42%, lower the incidence of clinical mastitis in early lactation by 57%, and decrease the overall occurrence of mastitis throughout the lactation period by 32%. Additionally, the duration of disease episodes was shortened by 40-50%.2. Zinc Supplementation
Including organic zinc in the diet of dairy cows has been found to enhance milk yield and improve udder health by reducing the number of somatic cells in milk. Zinc plays a crucial role as a cofactor for numerous enzymes and proteins involved in immune responses and inflammation. Severe zinc deficiency can lead to an imbalance in white blood cells, such as increased neutrophils and decreased lymphocytes. Research shows that adding 25 mg/kg of zinc methionine to the diet of dairy cows can reduce somatic cell counts in milk by up to 50%, lower the incidence of mastitis by 32.6%, and increase milk production significantly.3. Copper Supplementation
Copper is vital for the proper functioning of several enzymes that support immunity and metabolism. When copper levels are low, cows become more susceptible to infections, and inflammatory responses may worsen, leading to higher somatic cell counts in milk. In an experiment, two groups of heifers were observed 12 weeks before calving and throughout lactation. One group received a basal diet containing 6-7 mg/kg of copper, while the other received an additional 20 mg/kg of copper. The group with extra copper showed a 22% reduction in udder infections caused by major pathogens. It's important to note that high levels of sulfur, molybdenum, zinc, or iron in feed can interfere with copper absorption, even if the feed itself contains adequate copper.Half Cut Crab,Frozen Cut Crab Seafood,Half Cut Blue Swimming Crab,Frozen Portunus Trituberculatus
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