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.
The high-quality forages for raising pigs include: grain pods, Russian feed, bitter leeks, winter grazing 70 ryegrass, chicory, alfalfa, and white clover. How to raise pork piglets (7kg-20kg) phase: To provide adequate supply of high-quality, comprehensive nutrition piglet feed, in order to eat full, the protein content in the feed should reach 18% or more, and the Ca content should reach 0.8%- 0.99%, at the same time properly fed a small amount of pasture fresh stems and leaves, remember not to feed too much, the amount of daily feed to 1kg-2kg is appropriate, the electricity should not exceed 3kg, generally feed the fresh grass half an hour before feed. Medium-pig (20kg-60kg) stage: This stage is the most critical period for increasing lean meat ratio. It is also an important period to reduce the cost of raising pigs by using high-quality forage grass to save concentrate feed. At this time, concentrates with high protein content can be fed less. By adding high-quality herbage to supplement the deficiency of protein and calcium in concentrates, as well as supplementing vitamins and minerals, the daily feeding amount is generally 4kg-6kg of fresh grass or 15% of fine quality grass powder. (Preparation of concentrates: 70% corn, 20% bran, 10% concentrated feed or bean cake), and the daily feed amount of concentrates is 1kg to 1.25kg. Generally, fresh grass is fed half an hour before the feed is fed and twice a day. The ability of pigs to digest and utilize crude fiber is enhanced. The stress resistance and adaptability are greatly improved. The weight gain is fast. At this time, concentrates should account for 80% of corn and 20% of bran. It is not necessary to add any concentrate. Feed about 6kg-8kg of grass fresh grass or 20% of the concentrate of the grass powder, the amount of concentrate feed is 1.5kg-2kg per day, feed the fresh feed half a hour before the feed, feed twice a day.
In the first half of the month before the slaughter, 2kg-3kg of fresh grass, 2.1kg of 90% corn and 10% wheat bran mix were fed every day. How to raise sows empty phase: If the sow is too thin, more concentrate should be added. In general, sows are fed 0.5 kg-1 kg of concentrate each day, and 8 kg-10 kg of fresh grass or 20% of 30% corn+10% of bran are mixed with 60%-70% of forage hay powder. 80 days after sow pregnancy, high utilization of various nutrients in feed, coupled with slow growth and development of embryos at this time, is the best time to save the 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 must be added to the diet 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-1kg/day to 1kg-1.5. Kg/day, adjust the quality herbage 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 made of 60% corn + 30% bran + 10% sow concentrate feed or 50% corn + 30% bran + 18% soybean cake +2% bone meal to feed, the amount of concentrate is 2.5kg-3kg/day, plus 8kg=10kg of fresh grass. Feeding pigs generally does not require chopping or beating, and can be fed directly. However, forage grasses such as schizont, vanilla, and grasshoppers have poor palatability and can be chopped or beaten and fed into the concentrate.
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