Measures to increase the survival rate and vitality of weaned piglets

May 29, 2025

The weaning of piglets means that their own environment, feeding, and the relationship between the herd and the group are faced with a series of mutations. The stress brought by these changes will inevitably cause a series of physiological activities in the body to be disturbed, often causing illness and even death. . So how do we have a high weaning piglet survival rate and vigor?

I. Preparation before weaning

1. Determination of weaning age. The age of weaning depends on the production system and is generally weaned within 16 to 28 days of age.

2. Delivery room for sick and sick piglets. Piglets that have no feeding value such as severe dermatitis, kicks, belching, cough, etc. cannot be transferred to the nursery. The maternity keeper should carefully determine the health status of the piglet to be transferred and must eliminate the piglets that have no feeding value before the pig is transferred.

3. Prepare the pig car. Most large-scale pig farms adopt the two-point and three-point rearing mode, and the pig car is an important means of transport for piglets. Because of its direct contact with piglets and between multiple pig farms, it is important to pay attention to the hidden dangers of pigs' biological safety, and to strictly perform cleaning and disinfection work.

4. Preservation preparations. Before the piglet enters, the pig house shall be completely and thoroughly washed, disinfected and dried, and the microbiological sampling inspection of the pig house environment shall be done. Before entering the pig, all equipments in the house should be overhauled and repaired, including fans, wet curtains, controllers, water lines, and feed lines. You can make a maintenance checklist and perform inspections according to the checklist to prevent omissions.

Second, weaning link control

1. Adjust the temperature, ventilation and humidity. Twelve hours before receiving the piglet, adjust the temperature in the pig house. Ensure that the ambient temperature of the pig house is between 27°C and 28°C. Place the underlaying plate under the heat lamp for the piglets to lie down. The temperature of the area where the light is radiated to the feeding plate is 34°C, giving the piglets the most comfortable and comfortable environment. Ventilation and ventilation patterns will vary depending on the season. The optimum humidity for piglets should be controlled at 40% to 60%.

2. Weaned piglet quality monitoring. It is necessary for conservation staff to inspect piglets they receive, and focus on checking sick piglets with lighter weight, suffocation, kicking, cough, dermatitis, etc., and provide timely feedback on the results of the inspection to ensure smooth operation of the pigs.

3. Piglets grouping. The grouping should be completed on the same day as the pigs. The rearing density of weaned piglets is 0.15 square meters per head, and an average of 25 to 30 piglets per field is appropriate. This work should be carried out in accordance with the individual piglet size, physical condition, etc. Larger piglets were placed at both ends of the pig house, medium-sized and smaller piglets were placed on the inside, and light-weight, weak pigs were placed in the warmest and most comfortable place in the center. It is worth noting that if the initial stocking density is 0.15 square meters per head, the piglets need to be secondarily sorted within 7 weeks after weaning.

Third, weaning pigs feeding management

1. Feed early in the week. Placing pads and extra trays in each field. There are three functions of the pad: one is to increase the effective temperature of the piglets in the lying area of ​​2°C～3°C; the other is to protect the piglets from the influence of thieves; and the third is to identify the piglets fed by the domesticated piglets and help identify the animals that do not eat. . Regardless of whether it is a pad or a chute, it must follow the principle of feeding less and feeding less, feeding 3 to 5 times a day to reduce the waste of feed, and clean up the residue on the pad to prevent mildew. Piglets are weaned for 4 to 5 days at weaning to promote feed intake and gradually adapt to dry feed, especially for weak piglets. The specific method is to fully immerse the feedstuff into porridge-like form with the teaching material and hot water; the first day will be fed with 80% of water and 20% of feed; after that, 15% of feed will be added daily and 15% of water will be reduced gradually. Increase the proportion of feed and gradually transition to dry material within 7 days. However, if piglets have digestive diseases such as diarrhea, they should stop feeding the wet materials and treat them in time.

2. Piglets drink water. The drinking water of the piglets must be clean and clean. The original water in the waterline should be drained because the water in the waterline will cause a lot of bacteria during a long period of time. It will mix with dirt such as rust, and if necessary, it must be on the waterline. Internal cleaning. At the same time, water quality monitoring and disinfection should be carried out regularly. The water provided to piglets is preferably warm. Piglet drinkers are mainly nipple-type and bowl-type, and the water spout height is 5 cm higher than the shoulder of the piglet, about 15-30 cm. On average, every 10 piglets occupy one nipple-type faucet, or every 20 heads occupy a bowl-type drinking fountain. For piglets, the water pressure of the drinking fountains should not be too high, and the water flow rate can be guaranteed at 450 to 500 ml/min. In order to facilitate the piglets to quickly find the water source, the water spout can be bound and allowed to continue flowing for a period of time. In addition, giving organic acid preparations in drinking water helps digestion and reduces weaning stress.

3. Reasonable lighting. Within 3 days after weaning, the piggery needs to provide 12 to 14 hours of light each day to facilitate the learning behavior of the piglet.

4. Cruise. Daily tour work is indispensable. It is necessary to ensure at least one detailed round-trip frequency per day. The piglets must also make a round of the first three days after weaning. Observe the status of each piglet and detect and deal with abnormal pigs in time. . Within 1 week after weaning, we should focus on those piglets that will not eat or drink water, pick out in time, put them on weak pens, and take care of small groups to add milk substitutes to feeds to attract food. During the course of the cruise, Check the feeding, drinking water system and environmental control equipment.

5. Vaccine immunity. When designing the immunization program, it is necessary to link up with the immunization during the lactation period, focusing on the vaccine immunization work for swine fever, swine blue-ear disease, foot-and-mouth disease and swine pseudorabies, and do a good job of immune surveillance.

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