The level of feeding management in the pre-pregnancy period of the sow can be lower. When the pregnancy is 70-80 days, the green feed can be fed more, and the concentrate can be fed less properly. However, from the 30th day before the birth, to the week before the birth, more concentrate (10%-15%) should be fed, that is, the fetus should be raised to increase the birth weight of the piglets. The amount of material is gradually reduced in the week before the birth, which is 15%-20% lower than the normal feeding. On the day after delivery, only a small amount of salted wheat bran and thin porridge are fed. The feed is still normal after 2-3 days postpartum. Afterwards, the feed amount is gradually increased. After 5 days, the feed amount can be opened, and the crude protein content of the feed should reach 15%-16%. Ensure that the sow's milk is sufficient, the piglets grow fast, have less disease, and can also make the sows estrus early after weaning.
2. Early pig iron supplementation
The newborn piglets contain about 47 mg of iron, which requires about 7 mg of iron per day for growth. It is only used for one week. The weight of iron in sow milk is extremely low. About 1 mg of iron per kilogram of milk. If iron is not added early, it will lead to insufficient supply of iron, lack of red blood cells in the blood, causing iron deficiency anemia in piglets and causing squatting and affecting development. Therefore, it is necessary to supplement iron in piglets 3-7 days old. This is an indispensable measure to prevent anemia in piglets, reduce diarrhea, improve survival rate and promote growth. Common iron supplement methods are:
2.1 When the piglets are 3-7 days old, the deep muscles are injected with 1 mL of blood (150 mg of iron).
2.2 2.5 g of ferrous sulfate, 1 g of copper sulfate, dissolved in 1000 mL of water for bottling, and placed on the nipple of the sow every day to let the piglet suck the mixture 10-15mL.
3. Early feeding and feeding
Early feeding and feeding is the key to weaning piglets. Piglets grow in a straight line from birth to weaning. The faster you grow in the later stages, the more nutrients you need. While the sow's lactation declines at 20 days of age, it must be solved by artificial feeding, otherwise it will affect the growth and development of the piglets. Therefore, it is necessary to start feeding at 7-10 days of age. At this time, the piglets begin to grow their teeth, and they like to chew things. They can be fried and sautéed with corn, rice, and wheat grains. After 5-7 days, the piglets will feed the ingredients on their own, to feed the feed early and promote the piglets. Fast and long purpose.
The above three simple techniques are used together, and the effect is more obvious. The average weight gain is 5-10kg compared with the conventional feeding, and the gross profit per piglet is 30-40 yuan.
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