Weaning is a major turning point in the life of piglets. At weaning, the piglet is separated from the sow, and the feed for the piglet is changed from a whole milk diet to dry feed. At this time weaned piglets are in a period of strong growth and development, but their digestive function and resistance to disease are not strong enough. Severe dietary changes, coupled with changes in the environment, have a strong stress on piglets. After stress, piglets often show poor appetite, digestive dysfunction, diarrhea, growth retardation, edema, etc. Some piglets become stiff pigs, causing huge economic losses to the breeding industry. What measures should farmers adopt to prevent weaned piglets from weaning stress?
1. Feeding management
1 Ensure that the sow's healthy breeding condition is conducive to the rapid growth and development of piglets, improve the body resistance, reduce the occurrence of epidemics, and reduce the incidence of weaned pigs' weaning stress. 2 1 to 2 ml of iron dextran injections were injected every 3 to 4 days and 12 to 13 days after birth. 3 Feed the piglets 5 to 7 days after birth and exercise gastrointestinal. We reduce the supply of breast milk 2 to 3 days before weaning, reduce the amount of milk produced by sows when we reduce the amount of feed, and reduce the number of feedings of piglets, forcing the piglets to eat more. 4 At weaning, the sows were driven out first. After the piglets were kept in the original bar for one week, the mixed group was transferred to the nursery house and the suckling piglets were still fed, so that the psychological stress did not occur at the same time as mixed stress and environmental stress. 5 Feeding should be gradually replaced after weaning. Feed 5 to 7 times a day, limit feeding 78% full. 6 Ensure sufficient drinking water, and add electrolytic multidimensional in drinking water to avoid drinking dirty water and sow urine. 7 The nursery should be thoroughly disinfected, kept clean, dry and ventilated. 8 Put wooden sticks, stones, ironware, hoop rings or colorful plastic balls inside the house so that the pigs can play and prevent biting, biting, and fighting. 9 In the 15 days after weaning, no adverse stimulants such as castration of piglets are allowed, and streptococcal disease can be avoided due to stress-induced edema.
2. Immunization
1 piglet edema disease. Inactivated multivalent inactivated seedlings with edema disease, 1 ml of muscles per head and neck of 14 to 18 days old piglets can reduce the incidence and mortality of swine edema disease. 2 E. coli disease. The pregnant pigs were injected with E. coli genetically engineered vaccines 40 days and 15 days before delivery to obtain antibodies through colostrum to protect the piglets.
3. Weaned piglet feed nutrition
Prevent the use of mildewed and rancid feed, reduce the feed salt content and feed antigen content, such as the use of low-protein, high amino acid, less mature feed; 5% whey powder, plasma protein powder added to the feed. Whey powder improves feed palatability on the one hand and improves feed intake of piglets. On the other hand, lactose produces lactic acid during digestion, lowers intestinal pH, inhibits bacteria, and promotes digestion. Plasma protein powder contains a large number of antibodies, piglets will increase disease resistance after eating.
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