Using high-quality pasture to raise pigs can not only reduce feed costs, but also increase the lean rate of pork, which can greatly improve the economic benefits of raising pigs.
The high-quality forages for raising pigs are: grain glutinous rice, Russian feed vegetables, bitter leeks, winter grazing 70 ryegrass, chicory, alfalfa, white clover and so on.
How to raise pigs and pigs (7kg ~ 20kg) stage: to fully supply some high-quality, nutritious piglet compound feed, to eat full, the protein content of feed should reach 18%, Ca content reaches 0.8%~ 0.99%, at the same time properly feed a small amount of fresh grass stems and leaves, remember not to feed too much, the daily feeding amount is 1kg ~ 2kg is appropriate, the electricity should not exceed 3kg, generally feed fresh grass half an hour before feeding.
Middle pig (20kg ~ 60kg) stage: This stage is the most critical period to increase the rate of lean meat. It is also an important period to save the cost of raising pigs by high-quality pastures. At this time, it can feed less concentrate with high protein content. By adding high-quality pasture to supplement the lack of protein and calcium in the concentrate, as well as vitamins and minerals, the daily feeding amount is 4kg ~ 6kg fresh grass or 15% high quality grass powder. (Concentrate preparation: 70% corn, 20% bran, 10% concentrated feed or bean cake), the daily feed amount of concentrate is 1kg ~ 1.25kg, usually fresh grass is fed half an hour before feeding the concentrate, fed twice a day. Large pigs have enhanced ability to digest and utilize crude fiber, greatly improve stress resistance and adaptability, and increase weight gain. At this time, the concentrate should be 80% corn and 20% bran. Feed about 6kg ~ 8kg of pasture fresh grass or 20% of grass powder, the amount of concentrate feed is 1.5kg ~ 2kg per day, feed fresh grass half an hour before feeding the concentrate, feed twice a day.
In the first half of the month before the exit, we will feed 2kg to 3kg of fresh grass, 2.1kg of 90% corn and 10% bran mixture. How to raise the sow empty stage: If the sow is too thin, more concentrate should be added. Under normal circumstances, the sows are fed 0.5kg ~ 1kg concentrate, 8kg ~ 10kg fresh grass or 20% 30% corn + 10% bran and 60% ~ 70% grass hay powder mixed feeding. 80 days after the pregnancy, the sow has a higher utilization rate of various nutrients in the feed, and at this time, the embryo growth and development is slow, which is the best period for saving concentrate, and the feeding method is the same as the empty period.
After 80 days of pregnancy, about 35 days after the birth of the sow, the feed should be properly increased in energy and protein, supplemented with calcium, 20 g of bone powder or 50 g of fishmeal per day, and the concentrate should be increased from 0.5 kg to 1 kg/day to 1 kg to 1.5. Kg/day, the quality grass is adjusted to 5kg ~ 6kg / day. In the lactation stage, the amount of concentrate is increased, and the calcium is appropriately supplemented. In general, the concentrate is 60% corn + 30% bran + 10% sow concentrated feed or 50% corn + 30% bran +18%. Bean cake + 2% bone powder to feed, the amount of concentrate is 2.5kg ~ 3kg / day, plus 8kg ~ 10kg of fresh grass. Feeding the pig's pastures generally does not have to be chopped or beaten, and can be fed directly. However, there are forages such as pine leafy vanilla, grass rafts, etc., which are poorly palatable and can be chopped or beaten and mixed into the concentrate for feeding.
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