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α-Tocopherol and β-carotene concentrations in feed, colostrum, cow and calf serum in Swedish dairy herds with high or low calf mortality. https://t.co/i7ngg98AN7 #vitaminA https://t.co/wQNzqHDw1M
α-Tocopherol and β-carotene concentrations in feed, colostrum, cow and calf serum in Swedish dairy herds with high or low calf mortality. https://t.co/i7ngg98AN7 #vitaminA https://t.co/wQNzqHDw1M