The use of high-quality forage grass to raise pigs can not only reduce the cost of feed, but also increase the lean meat percentage of pork, which can greatly increase the economic benefits of pig production. High-quality forages suitable for raising pigs include: grain pods, Russian feed vegetables, bitter leeks, winter grazing ryegrass, chicory, alfalfa, and white clover. How to raise pork piglets (7kg - 20kg) phase: To provide adequate supply of high-quality, comprehensive nutritional piglet feed, in order to eat full, the protein content in the feed should reach 18%, Ca content reached 0. 8%-0.99%, while feeding a small amount of pasture fresh stems and leaves properly, remember not to feed too much, the amount of daily feed to 1kg - 2kg is appropriate, up to no more than 3kg, generally fed half an hour before feeding Fresh grass. Medium pig (20kg - 60kg) stage: This stage is the most critical period for increasing lean meat ratio, and it is also an important period for reducing the cost of raising pigs by using high-quality forage grass to save concentrate feed. At this time, less concentrated protein can be fed. By adding high-quality herbage to supplement the deficiency of protein and calcium in concentrates, as well as supplementing vitamins and minerals, the daily amount of 4kg—6kg of fresh grass or 15% of concentrates of high-quality grass powder is generally applied. (Preparation of concentrates: 70% corn, 20% bran, 10% concentrated feed or bean cake), concentrate feed 1kg - 1.25kg, generally feed fresh grass half an hour before feed concentrate, feed twice a day. Large pigs have improved digestion and utilization of crude fiber, and have greatly improved stress resistance, adaptability, and rapid weight gain. At this time, concentrates should account for 80% of corn and 20% of bran, without adding any concentrated material. The quail feeds 6kg - about 8kg of grass fresh grass or 20% of the concentrate, and the daily concentrate is 1.5kg - 2kg. Feed the fresh grass half an hour before feeding and feed twice a day. In the first two months immediately before the slaughter, 2kg - 3kg fresh grass, 2.8kg 90% corn and 10% bran mix were fed every day. How to raise sows empty phase: If the sow is too thin, more concentrate should be added. Under normal circumstances, the sow is fed with 0.5kg to 1kg of concentrate per day, 8kg to 10kg of fresh grass or 20% to 30% of corn+10% of bran and 60% to 70% of forage hay. The 80 days after sow pregnancy, the higher utilization of various nutrients in the feed, coupled with the slow growth and development of embryos at this time, is the best time to save fine material, its feeding method is the same as the empty phase. After 80 days of sow pregnancy, about 35 days after farrowing, appropriate energy and protein should be added to the feed to supplement calcium, 20g of bone meal or 50g of fishmeal should be added every day, and the concentrate should be increased from 0.5kg to 1kg/day to 1kg/day. - 1.5kg days, the quality of pasture is adjusted to 5kg - 6kg/day. During the lactation stage, the feeding amount of concentrate is increased, and calcium is properly added. Under normal circumstances, the concentrate is supplemented with 60% corn + 30% bran + 10% sow concentrate feed or 50% corn + 30% bran + 18% soybean meal + 2% bone meal To feed, the amount of concentrate material 2.5kg - 3kg per day, plus 8kg - 10kg of fresh grass. Feeding pigs generally does not require chopping or beating, and can be fed directly. However, some forage grasses, such as schizophyllum vanilla, grass sorghum, etc., have poor palatability and can be chopped or beaten and fed into the concentrate.
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