How to prepare pig feed

When preparing piglet feed, we should follow the digestive physiological characteristics of piglets, and prepare feed raw materials containing various nutrients according to the various nutritional components required by each stage of piglet growth and development as stipulated in feeding standard of Pigs. Because piglets can't tolerate low temperature and grow fast, it is necessary to prepare high-energy and high-protein feed for piglets, and the digestible energy content in each kilogram of piglet feed should not be less than 14.23 mj. Considering the low digestibility and high nutritional requirements of piglets, the digestibility of diet should be high. A certain proportion of animal oil or vegetable oil should be added to the piglet diet to improve the energy level of the piglet diet. The crude protein content should not be less than 20%. It is best to add some animal feed, such as whey powder, milk powder, high-quality fish meal, plasma protein powder, meat powder and so on. In order to improve the level of protein and keep the balance of amino acids. In order to meet the needs of piglets for lysine and methionine, some synthetic lysine and methionine can be added. Because the digestive tract of piglets is not fully developed and its digestive function is poor, some digestive enzymes, such as pepsin, amylase and non-starch polysaccharide enzyme, can be added. Because piglets have weak constitution and poor resistance to foreign diseases, some antibiotics should be added to the feed to prevent piglets from getting sick and affecting their growth and development. Especially in the two weeks after weaning, adding antibiotics to the diet is beneficial to control diarrhea.

When preparing piglet feed, we should also consider the difference between open-range feed, prosperous-range feed and weaning feed. Piglets should have the advantages of fragrance, sweetness and crispness when eating. You don't need complete nutrition to start eating, because at this time, piglets are still mainly breast milk and can't eat feed, even if they eat some nutrition, it is difficult to digest. Generally, piglets start to use this starter from the age of 7 days. The earlier piglets start eating, the better their growth and development in the future, which can better make up for the shortage of breast milk in the future. Piglets' appetite for food means that piglets eat feed besides breast milk, mainly piglets. King feed is generally used after piglets are 28 days old. Wang food requires comprehensive nutrition, and the closer it is to breast milk, the better. We should consider the balance of energy, protein, amino acids, minerals and vitamins. Conditional pig farms can consider adding a certain amount of oil to improve the energy level of feed. Piglets should prepare weaned feed in the future. At this time, the energy content per kilogram of feed should not be lower than 13.8 1 MJ, crude protein should not be lower than 18%, and lysine content should not be lower than 1. 16%. Weaning materials should also be delicious, digestible and balanced in nutrition. At this time, the quality of feed directly affects the growth and development of piglets, because piglets have been separated from breast milk, and feed is the only source of life and growth. Although the nutritional level of feed is lower than that of mass feed, the balance of various nutrients is very important.

The formulas of artificial milk, attractant, fasting feed and weaned piglet feed are given for reference (Tables 27 and 28).

Table 27 Formula of artificial milk for piglets Note: 1. 3 ~ 5g2 of refined lard can be added into the formula as appropriate. 2. Inorganic salt additive consists of 0.28g of ferrous sulfate, 0.3g of copper sulfate, 0.15g of zinc sulfate, 5g of calcium dihydrogen phosphate, 0.15g of magnesium sulfate and 0.05g of sodium selenite, which are added into artificial milk for dissolution after grinding and mixing. 3. Vitamin additives, it is recommended to buy a variety of vitamins (multivitamins) finished products and add them according to the dosage on the instructions.

Ingredients: 1.23 milk (ml)1.0001.0001.000 whole milk powder (g) 50 100 200 eggs (g) 50 50 50 glucose (g

Table 28 Examples of piglet feed formula Note: * Additive premix should contain enough amino acids, minerals, trace elements and vitamins.

Weight stage: 7 days after birth to 2 weeks after weaning, 2 weeks after weaning, 25 kg weight formula:123123 corn (%) 52.316.4 55.9 60.5 30.038.0 wheat (%)-30 wheat bran (%) 50. 11.717.618.617.518.012.0 peanut meal (%)-5- expanded soybean (%) 650.