Core Tip: After entering the winter every year, pig farmers have invariably discovered that the pig's fur is not as good as it used to be. The concrete manifestations are: long hair, slowing growth, and the skin is not as rosy as before. Therefore, it is concluded that the quality of the feed of the manufacturers has deteriorated. Now. Some also require manufacturers to increase the content of high copper, in order to achieve the purpose of red skin, Mao Liang. In fact, these are unscientific, in the case of normal nutrition, the pig's fur must be red and white, the reasons for the deterioration of winter pig fur are mainly the following aspects:

1. Whether iron supplementation is timely: Whether the pig's skin is ruddy or not is related to iron content in the pig's blood. In newborn piglets, the iron stock obtained from the mother is only 49 mg. After birth, mother's milk can only provide 1 mg of iron per day, and its normal requirement for iron is 7 mg per day. Therefore, newborn pigs must supplement iron as soon as possible. Ferrous fumarate is generally used for iron, and protein chelates iron better.

2, whether the choice of feed is reasonable: the pig from birth to 8 weeks of age, the type and amount of digestive enzymes showing a regular change, namely: the activity of lactase is gradually weakened; lipase, protease and amylase activity gradually Enhanced; 8 weeks old digestive tract enzyme system tends to normal levels. This requires the piglet to use a product that meets the digestive physiology characteristics of this stage and begin to lure at 7 days of age. Early feeding helps to promote the development of digestive organs and digestive function of piglets as soon as possible, through feed intake to meet the rapid growth needs, to avoid malnutrition caused by lack of breast milk, so that piglets grow slowly, resulting in long hair, not leather Redness; it is worth mentioning is: some farmers one-sided pursuit of red skin and attention to increase the amount of copper sulfate, leading to feed in the copper, iron, zinc and other trace elements of the nutritional balance is destroyed, mutual antagonistic effect, intensified The lack of iron in the feed causes the skin to whiten.

3. Cold weather and poor warmth: In the cold winter, the pig's body surface temperature drops. In this case, on the one hand, pigs feed on a large amount of protein feeds and energy feeds to maintain body temperature. At the same time, pigs need to rapidly grow their hair to cover. Body surface, to maintain body temperature will not be excessive loss, which promote hair growth too fast; the other hand, in the cold environment, in order to reduce heat loss, the skin of the pig's skin must shrink, resulting in its skin is not as good as summer and autumn rosy.

4, the impact of disease and environmental health: In the winter, the house damp, dirty, on the one hand will accelerate the loss of heat, is not conducive to keeping piglets warm; on the other hand will induce disease, affect the health of pigs, leading to unsightly fur. For example, (1) piglets yellow and white fleas, pig paratyphoid and other diseases are cured, but some pigs have become dead pigs, and their growth is still very slow; (2) chronic wasting diseases, such as asthma, are mainly manifested as slow growth, Pant, long fur, thick, chaotic, reduced intake, slow growth. (3) Some parasitic diseases, such as mistletoe on the deep skin of pigs, destroy the skin tissue, use blood globulin as a nutrition, and destroy the blood components. Pigs grow slowly, hair is messy, and the skin is rough.

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