Weaning is a major turning point in pig growth and is generally weaned from 3 weeks to 4 weeks of age. After the piglet was separated from the sow, the feed was changed from the whole milk diet to dry feed. At this time, the weaned piglets are in a period of strong growth and development. The digestive function and disease resistance are not strong enough. The drastic changes in the diet and the changes in the environment cause the piglets to have strong stress. Without a good transition, weaning stress syndrome may occur. The first two days after weaning, the piglets became restless and call to find their mother. Afterwards, they turned to quietness, depression in the abdomen, feed intake decreased by 15% to 20%, growth stagnation (commonly referred to as milk sucking), loose fur and hairiness in a few days. Atheism, weakness, walking, shaking, lying, cold, body temperature is normal or slightly low, empty chewing, no interest in feed; some thirst, hobby arched into other pig's abdomen; some diarrhea, average diarrhea The rate of 50%, extreme weight loss, the final failure to death, the mortality rate of 15%; concurrent edema disease, decreased resistance to disease, weaning within 7 days of weaning basically stopped growing, energy is used to anti-stress.
Therefore, piglets have a good weaning pass and have a close relationship with economic benefits. It is recommended to do the following:
1. Science teaching slot. To make the piglet adapt to the feed quickly after weaning, letting it learn to feed is the first step in a good weaning pass. 3 days old can be sprinkled in the incubator on the side of the sow breast milk to piglets, so that piglets familiar with the taste of the feed; from 5 days of age can be added as little as possible more than hog material, and strive to 15 days of piglets will be Actively feed the feed.
2. Keep the environmental conditions stable. The sow was driven off at weaning, and the piglet was left in the original bar for a week to make it live in a familiar environment. Post-weaning personnel, feed, and other factors should remain relatively stable. After the spirit, appetite, and feces of the weaned piglets are normal, the feed, the feeding system, and the mixing bar are gradually changed.
3. Cold insulation. When the weather changes, the ability of the piglets to adapt to low temperatures is poor. If they are weaned during the cold season, they will exacerbate the cold stress of the piglets. At this time, special measures should be taken to prevent cold and heat insulation. We generally only pay attention to the insulation of suckling piglets. In fact, weaning must also be considered for weaning for several weeks. The temperature of the environment can be appropriately raised to 25°C to 30°C. At the same time, materials such as bedding or burlap are laid on the floor of the pig house. Symptoms of diarrhea, fever, bronchitis, and pneumonia, which are caused by the lower temperature of the environment than the optimum temperature of the piglet, are easily induced by other infectious diseases.
4. Train piglets for fixed defecation. If the piglet is defecate everywhere in the pig house, it will cause the environment of the pig house to be damp and polluted, and it is easy to spread diseases, which is not conducive to the growth of piglets. Therefore, we must pay attention to the fixed-dose defecation training piglets. This work must be done at weaning, otherwise the piglets will be harder to train. Go to the first few days after childcare and drive away the pigs that do not have a bowel movement to the designated place to defecate several times. You can also leave some of the excrement in the fixed spot when cleaning the pig house, or wet the place with water. Will develop a habit of defecation.
5. Within half a month after weaning and after being transferred into the home, Wei Likang drinking water with a dosage of 500 g/500 kg water can greatly alleviate the effects of weaning stress and improve the disease resistance of piglets. There is a pig farm application to verify weaning piglets to nursery houses for two months. Due to weaning stress, the survival rate of piglets is less than 80%. From the day of weaning, Wei Likang started drinking water for 15 days. Compared with the same period, the survival rate was as high as 96%, and the growth rate of piglets was fast, which was 0.5 kg more than the average of pigs in the same period.
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