During the growth and development of beef cattle, vitamin A deficiency is a common issue, especially during late autumn. As the weather cools down, grass starts to lignify, which increases the crude fiber content while drastically reducing the carotene levels. Feed sources such as wheat straw, corn stalks, and dried sage grass are also low in carotene. Moreover, when cattle are fed more concentrates, the carotene content in these high-energy feeds is usually very low.
As beef cattle go through the fattening phase, their growth rate accelerates, and so does their demand for vitamin A. If the supply of vitamin A is inadequate, their appetite may decrease, and weight gain can slow down significantly. Therefore, it's crucial to start supplementing vitamin A early in the autumn season to support their health and growth.
The recommended method is to administer 100,000 units of vitamin A daily, every three days, and then repeat the cycle. Alternatively, intramuscular injections of 500,000 to 1,000,000 units can be given every 10 days, followed by similar cycles. This approach not only helps maintain optimal health but also improves feed conversion efficiency and promotes better overall growth. Proper vitamin A supplementation is essential for ensuring that cattle reach their full potential, especially during the colder months when natural sources of the nutrient are scarce.
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