In the actual process of raising pigs, pigs are prone to vitamin deficiency in winter. The main reason is the lack of green feed. In addition, some pig farmers have simple feed, lack of sunlight and poor air circulation, so pigs are easy to get vitamins in winter. Deficiency. 　　

Vitamin A deficiency. Dry skin, dull body hair, indigestion, reduced appetite, slow growth. Some have weakened vision and neurological disorders. In severe cases, cramps, turning circles, unsteady gait, ataxia, and even hindquarters can occur. The occurrence of this disease in sows can easily cause miscarriage or stillbirth, and the piglets born are blind. Even if the piglets born are normal in appearance, their physique is weak and easy to die. Prevention and treatment: 20 grams of pine needles, mashed juice or decocted juice, can be fed once in the feed, once a day, for several days; you can also feed more vitamin A-rich feed such as carrots and silage. 　　

Vitamin B deficiency. Growth retardation, vomiting, skin rash, hair loss, etc. When pantothenic acid is deficient, poor appetite, poor growth, diarrhea, coughing, loss of coat, dyskinesia, especially showing a "goose-walking" movement posture. When niacin is deficient, loss of appetite, weight loss, severe diarrhea, dermatitis, cracked skin, black scabs, neurological disorders, and anemia. Prevention: In the daily feed compounding, pay attention to adequate supply of vitamin B-rich feed. If corn is used as feed for a long time, it can cause niacin deficiency. The corn should be reduced in the feed and bran, silage, germinated feed and tuber juicy feed should be added.

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