Application of cow vitamin additive premix

Vitamins are low molecular compounds necessary to maintain the normal physiological functions of the animal's body. In the absence of vitamins in the feed, the body's physiological function will be dysfunctional and various vitamin deficiencies will occur. Therefore, vitamins are essential nutrients for life support.

There are many types of vitamins, usually divided into two categories according to their solubility, namely fat-soluble vitamins (vitamin A, vitamin D, vitamin E and vitamin K) and water-soluble vitamins (vitamin B and vitamin C).

Since bovine rumen microorganisms can synthesize vitamin K and B vitamins, the liver and kidney can synthesize vitamin C. Therefore, in general, no additional calories are required except for calves. However, sufficient vitamin A, vitamin D and vitamin E must be provided in the diet to meet the needs of cows and beef cattle in different physiological periods.

It is also reported that niacin plays an important role in the nutritional metabolism and milk production of dairy cows. Generally, 3 grams to 6 grams of niacin per cow is fed in the early stage of lactation or before the birth, which can prevent ketosis and milk production in cows. The amount can also be significantly improved. In the summer, high-yield cows add 6 grams of niacin per head per day, which also increases milk production.

The amount of vitamin added should be determined according to the nutritional requirements of different varieties and different physiological periods. Insufficient and excessive vitamins have an adverse effect on the health and performance of cattle.

In the absence of vitamin A, the growth and development of calves will be stagnant, the fur is rough and dull, the conception rate is low, and the postpartum uterus is inflamed, which seriously affects the production performance. When vitamin D is deficient, the yak has rickets, and the adult cows show osteoporosis. The main symptom of vitamin E deficiency is skeletal muscle degeneration of yak, resulting in dyskinesia, and the reproductive rate of adult cattle is reduced.

Excessive vitamin addition not only causes waste, but also causes poisoning. Excessive vitamin A can cause loss of appetite, itchy skin, joint swelling and pain, bone hyperplasia, weight loss; excessive vitamin D, can cause increased blood calcium, bone loss of calcium salts, osteoporosis and so on.