How do piglets grow fast after weaning?

Weaning is the second biggest stress for piglets after birth. Its nutritional source has changed from completely or partially relying on liquid breast milk to completely relying on solid feed, and digestive enzymes in gastrointestinal tract have changed from enzymes that decompose milk protein, lactose and milk fat to enzymes that decompose corn, soybean meal, fish meal and other general raw materials, resulting in indigestion of nutrition absorption, coupled with changes in environment, temperature and density, which is easy to cause diarrhea or growth stagnation of piglets.

Characteristics of feed for weaned piglets

A certain high dose of copper has the value of promoting growth. Adding copper to the piglet diet can regulate the gastrointestinal activities of piglets. Appropriate copper ion concentration will activate pepsin, improve the digestive function of pepsin, and enhance the digestive ability of protein, thus promoting the growth and development of piglets. As a growth promoter for pigs, copper sulfate has been widely used. The results showed that adding 125-250ppm copper (0.454-0.908 kg copper sulfate per ton of feed) to piglet diet could improve growth and feed efficiency, reduce mortality, increase daily weight gain of pigs by 8% and feed efficiency by 5.5%. Adding copper and antibiotics in piglet diet at the same time has better growth promotion effect than adding antibiotics alone. However, it must be emphasized that 250ppm is the limit of copper addition in piglet feed. If it exceeds this limit, it will lead to copper poisoning in piglets, lead to copper accumulation in liver, metabolic disorder, rapid decline in growth rate and even increase in mortality. Especially in the case of low zinc and iron content in the diet, it is easier to be poisoned. Therefore, copper in piglet feed cannot be added excessively, but most feed factories will consider these problems when using premix, concentrated feed and complete feed, only feed is used as a breeding factory.

Feeding management of weaned piglets (15-30 kg)

No matter whether you breed by yourself or buy piglets from the market for fattening, you must thoroughly clean and disinfect the empty pens one week before entering the pigs, and prepare the corresponding feed.

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1, reasonable grouping. Strong and weak piglets are raised in columns, and the weight of piglets in each column is close. If it is not an industrial feeding method, it will be fed in the original fence until it is out of the stall, and the number of feeding heads in each stall is calculated according to the area of 0.9 square meters per pig. At most 15 head per column, too crowded can easily bite the tail and ears, which is not conducive to the growth of pigs.

2. Feeding. The self-propagating and autotrophic weaned piglets should be replaced gradually, and the piglet feed should still be used within half a month, and gradually used at the ratio of 1/3, 1/2 and 3/ 1 after one week. Feeding frequency changed from five times a day to three times a day. Daily consumption is calculated at 5% of body weight. Then according to the daily feeding times, the feeding amount is evenly distributed. If you can't finish it in an hour, you should clean it up and recycle it. You can reduce it next time.

Piglets purchased from the market or other pig farms can be fed with piglet feed (pellet feed or self-ingredient) containing crude protein 18% and digestible energy of 3200 kcal. Homemade powder needs to be mixed and fed wet. If there is no automatic drinking water device, clean water should be put in the feeding trough, and pigs who have just entered the circle can add a variety of vitamins to the drinking water appropriately.

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1. Observe the mental state, breathing, eating, feces, urine, etc. of piglets every morning, noon and evening, report the illness to the veterinarian immediately, treat as soon as possible, strengthen the feeding management according to the requirements of the veterinarian, and isolate the treatment if necessary.

2. setup. Let the pig achieve three goals: eating, sleeping and defecating. In order to discharge urine and feces in a fixed position, piglet feces should be placed in a fixed position in each column. After 3-5 days of training, you can basically defecate at a fixed point. Not only is it convenient to clean the feces, but also it can keep the pigsty clean.

3. The fence must be cleaned 3-4 times a day to keep it clean and hygienic. In summer, pigsty should be cleaned around 9 am and disinfected once a week.

4. Pay attention to heat preservation. The suitable temperature for weaned piglets is 25-26 degrees Celsius. Compound piggery is easy to reach this temperature, and single-row piggery should take appropriate insulation measures. Ventilation should be paid attention to in compound pigsty.

5. Piglets bought from the market were injected with sodium selenite VE needle: 1ml/ head about the tenth day.

6. Castrate the castrated boar.

Epidemic prevention and deworming

In the weaning and feeding stages, vaccination against various infectious diseases must be completed. If pigs are immune to various infectious diseases, piglets will grow smoothly and have a healthy constitution. It also lays a solid foundation for future management.

1, autotrophic (or standardized pig farms) have prescribed immunization procedures, and the unfinished immunization will continue on the prescribed date.

2, piglets bought from the market, in the first week of feeding, should be vaccinated with swine fever vaccine immediately, 4 copies/head. A week later, the epidemic prevention work of swine erysipelas, swine pneumonia and piglet paratyphoid vaccine was carried out respectively. Inject (orally) according to the dosage of the vaccine instructions. In order to improve immunity, piglets purchased from other pig farms can also be vaccinated again. 70-day-old patients were vaccinated against streptococcosis once. Inoculate foot-and-mouth disease vaccine once every 80 days (April and September every year).

3. It is often observed that sick pigs are isolated and treated in time. The dead pig was dissected and buried deeply.

4. After each vaccination, when the pigs are normal, it is necessary to deworm the pigs and drive away the parasites inside and outside the body. Insecticide, abamectin, ivermectin, levamisole, trichlorfon, vermicelli powder and Liuhe No.1 (including cotton, hemp, Guanzhong, betel nut and other traditional Chinese medicines) can be selected. Repeating deworming one week after deworming, or replacing different deworming drugs. When deworming, it is necessary to clear the feces (or clean the fence) in time to prevent nematodes and eggs discharged from the body from being swallowed by pigs, which will affect the deworming effect. Disinfection effect is better after deworming.