Early weaning technique of three-way crossbred piglets

Traditional pig-breeding methods have a long pupa period and are generally weaned at 50-60 days after birth. The nascent individuals of the three-way crossbred piglets are larger, and their adaptability and stress resistance are stronger than those of the binary piglets. Obviously, individual growth and development are faster, the amount of sucking milk increases, and the supply of maternal lactation is relatively insufficient. Therefore, the feeding of three yuan piglets requires early weaning. At the same time, the popularization and application of scientific swine technology has provided a strong guarantee for the implementation of early weaning. Adopting early weaning can improve feed utilization and sow fertility, as well as piglet growth and development.
First, three yuan piglet early weaning appropriate age and weight Three yuan piglets generally 28 to 35 days of age, weighing 6.5 to 8.0 kg range for weaning isolation is more appropriate. However, the specific weaning date should also be determined flexibly based on the specific production conditions such as weather changes, health conditions, number of litters, and feeding and feeding effects.
II. Method of early weaning of Sanyuan piglets Effective method for early weaning of Sanyuan piglets: establish the basis of free-feeding through early feeding and timely feeding, gradually reduce the contact between sows and piglets one week before weaning, and reduce the risk of piglets The frequency of milk increases the number of feeds for the piglets. After the piglets have finished milking, the piglets are rested in a timely manner on alternate days, and the time interval between sucking and milking needs to be gradually extended so that the piglets have an adaptation from multiple sucking milk, little sucking milk and no suckling milk. The process, so as to achieve the goal of reducing weaning stress; once the timing is mature, the sows and piglets are separated once. Usually adopts the method of “reserving mothers and catching mothers”. Although it may seem abrupt, it will naturally not cause too much stress on the piglets because it controls and reduces the chance of sow-to-letlet contact. This method saves time and labor, facilitates production arrangements, and is now widely used and promoted.
Third, comprehensive technical measures
1. Lures training: Early sedation training is conducted on Sanyuan piglets in order to train the piglets to accept materials because the function of the digestive organs of the piglets is not perfect, and breast milk can basically meet the needs of the piglets. In order to exercise the chewing and digestive function of the piglets, promote the secretion of gastric juice, avoid piglets from licking and contaminating and prevent diarrhea. The time of attracting starts from 7 to 10 days of age. With the increase of age, the number of training sessions is adjusted to exercise digestive organs and functions, which lays the foundation for late feeding. Method: Enticement training adopts a compulsory method. Several times a day, the piglet is closed in the feed bar, and the sucker is restricted and forced to eat. The 551 feed is sprinkled in the feed bar of the piglet and is trained 4 to 5 times a day, usually 4 to 5 days. Will eat. There is a sink (conditional, installable automatic drinker) in the bar for piglets to drink freely.
2. Feeding in a timely manner: After 20 days of age, the piglets will gradually improve with the digestive function and the rapid increase in body weight, increase the food intake, enter the vigorous food period, the sow lactation can not meet the nutritional needs of piglets, so to feed through the feed Feeding some of the nutrients of the piglet to relieve the lactating burden of the sow and further improve the function of the digestive organs of the piglets. Feeding method: Feeding is still mandatory. When pigs are fed, the piglets are separated and restricted to the feed bar. There are feed troughs and sinks. Feeding is usually 6 to 8 times a day, feeding as much as possible at night. . Every time you eat until 7-80% is full. Feeding requirements: First, during the initial feeding period, we must take the milk feeding interval rotation. The second is to adhere to the "less amount of time," the feeding principle. The third is to grasp the gradual conversion of feed and avoid sudden replacement of feed.
3. Cultivation of healthy piglets: Weaned piglet diarrhea and edema disease is the most common and most harmful second disease of piglets after weaning. Scientific feeding management and strict hygiene and epidemic prevention measures are prerequisites for preventing the disease. When diarrhoea develops in individual litters in a litter, it quickly spreads to the entire litter and should be immediately controlled. At the same time, whole litter piglets should be given preventive treatment. Iron supplementation: In order to prevent iron deficiency anemia in piglets and affect early weaning, piglets may be given intramuscular injections (Guangxi) or dextran iron cobalt (Shanghai) at 3 to 4 days after birth. Selenium Supplementation: When piglets are deficient in selenium, they often develop sudden disease and even die from piglets that have large individuals, good lyrical conditions, or fast growth. Sodium selenite VE powder can be added, or intramuscular injection of sodium selenite injection.
4. Notes: 1 Piglets should not be weaned in the short term because of illness, deworming and epidemic prevention, because weaning is a serious stress for piglets. 2 To ensure the timely supply of clean drinking water, piglets are poorly tolerant to thirst, and if they do not provide water in a timely manner, they will cause diarrhea due to an accidental drink of accumulated urine. 3 Remove leftovers, excreta, and dirt in a timely manner, keep them dry, increase emphasis on teaching as early as possible, and develop positioning and excretion habits. 4 Avoid overeating and high protein diets. The amount of feed intake of the piglets and the level of dietary protein directly affect the piglets' health status and the weaning nest volume. It is necessary to increase the feed intake of the piglets as much as possible to obtain the maximum weaning weight. It is also necessary to prevent diarrhea caused by excessive feeding. 5 From the day of weaning, appropriate amounts of VC and antibiotics (olaquindox, furazolidone, and oxytetracycline) should be added.

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