Precautions for planting pasture and raising pigs
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 suitable for raising pigs are: grain glutinous rice, Russian feed vegetables, bitter leeks, winter grazing 70 ryegrass, chicory, alfalfa, white clover and so on.
First, how to raise pigs
Piglet (7-20kg) stage: It is necessary to fully supply some high-quality, nutritious piglet compound feed. Based on the principle of fullness, the protein content of the feed should be more than 18%, and the Ca content should be 0.8-0.9%. Feed a small amount of fresh grass stems and leaves, remember not to feed too much, the daily feeding amount should be 1 ~ 2kg, up to 3kg, usually half an hour before feeding.
Middle pig (20-60kg) stage: This stage is the most critical period for increasing lean meat rate, and it is also an important period to save the cost of raising pigs by high-quality pasture. 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 volume is 4-6kg fresh grass or 15% high quality grass powder (fine material preparation: 70% corn) 20% bran, 10% concentrated feed or bean cake) The daily feed amount is 1~1.25kg. Generally, fresh grass is fed half an hour before feeding the concentrate, and fed twice a day.
The ability of large pigs to digest and utilize crude fiber is enhanced, the resistance to stress and adaptability are greatly improved, and the weight gain is fast. At this time, the concentrate should be 80% corn and 20% bran. It is not necessary to add any concentrated material. Feed 6~8kg of fresh grass or 20% of grass powder per day. The daily feeding amount is 1.5. ~ 2kg, feed fresh grass half an hour before feeding the concentrate, feed twice a day. In the first half of the month before the departure, feed 2 to 3 kg of fresh grass, 2.8 kg of 90% corn and 10% bran mixture.
Second, how to raise sows
Empty stage: If the sow is too thin, more concentrate should be added. Under normal circumstances, the sows are fed 0.5 to 1 kg of concentrate per day, 8 to 10 kg of fresh grass or 20 to 30% of corn + 10% of bran and 60 to 70% of forage powder.
80 days after the pregnancy of the sow, the utilization rate of various nutrients in the feed is high, and at this time, the embryo growth and development is slow, which is the best time to save the concentrate, and the feeding method is the same as the empty stage.
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 to 1 kg/day to 1 to 1.5 kg. / Day, adjust the quality grass to 5 ~ 6kg / day. In the lactation stage, the amount of concentrate is increased, and the calcium is properly supplemented. Generally, the concentrate is 60% corn + 30% bran + 10% sow concentrated feed or 50% corn + 30% bran + 2% bean cake + 2% bone powder. To feed, the amount of concentrate is 2.5 ~ 3kg / day, plus 8 ~ 10kg of fresh grass.
Feeding the pig's pastures generally does not have to be chopped or beaten, and can be fed directly. However, some pastures such as pine, vanilla, and hibiscus are poorly palatable, and can be chopped or beaten and mixed into the concentrate for feeding.
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