“A good start is half the battle†is also true in the pig industry. Experienced farmers have a strong relationship between birth weight, weaning weight and weight gain during fattening. Individual large piglets have strong vitality, good physical fitness, fast growth and weaning weight, and also have improved resistance to disease. The pigs with large weaning weight have faster fattening speed and higher feed compensation. Whether piglet seedlings have high quality has a great impact on fattening work. Therefore, novice breeders have a flaw in selecting piglets: 1. Hybrid combination meets production needs Piglet breeds, birth weight, weaning weight and health status are important factors influencing piglet growth and post-fertilization. The offspring obtained by the hybridization have strong vitality, fast weight gain and high feed conversion rate. However, different hybridization methods and cross-crossing under different environmental conditions are different, and hybridization effects of different hybrid combinations are also different, so screening of hybrid combinations is extremely important. Ternary hybridization is more effective than binary hybridization. The most common combination is Du Changda. 2, improve the birth weight and weaning weight of piglets Under normal circumstances, the size of the newborn's birth weight is closely related to the size of the weaning weight. That is, the greater the birth weight of the piglet, the stronger the viability, the faster the growth rate, and the greater the weaning weight. The weaning weight of piglets is closely related to the weight gain during the fattening period. The weight gain of the piglets during the lactation period is fast and the mortality is low. Small, thin piglets can be observed in production, which are prone to illness or even death in the fattening period. In order to obtain piglets with heavy birth weight and weaning, it is necessary to do the management of the sows and the management of the feeding piglets, and lay a good foundation for improving the fattening effect. As the saying goes: "The difference between the first birth and the first break is one kilogram. 3, good shape Good body shape is the external manifestation of disease resistance and physical health, and the balanced rapid growth and development of various tissues, organs and systems is the guarantee for later fattening. Piglets with open ribs, large chest, thick tube and thick bones grow fast in the later fattening, high feed efficiency, thin back, and more lean meat. 4, healthy and disease free Pig health is the basis of rapid growth. Healthy and disease-free piglets are characterized by bright eyes, smooth and shiny coats, stable standing, uniform breathing, responsiveness, flexible movement, shaking their heads or tails, clearing their noses, and nose. The mirror is moist, with the group; the fecal soft urine is clear, the bowel movement posture is normal; the piglet has a large amount of food and actively feeds. The key to fattening piglets is to select high-quality piglets. Mastering the skills of selecting piglets above can also pick good piglets. Shanghai J.Shine Co.,Ltd , https://www.jshinechem.com