First, insist on raising hybrid pigs.

Piglets produced by Duroc, Bitran, Dika, Landrace and other boars. And local sows are called hybrid pigs. The first generation of hybrid pigs has strong viability, fast growth and good feeding effect. Therefore, it is necessary to popularize the new technology of "three modernizations" of hybrid generation of improved boar, localized sow and piglet.

Second, adhere to the implementation of protective feeding.

In summer and autumn, cucurbitaceae, pumpkin, sunflower and other plants can be planted outside the pig house to shade the sun and cool down. In winter, we should popularize the new technology of feeding in plastic greenhouse, and do a good job of deworming and immunization regularly.

Third, adhere to the law of self-cultivation.

Raising excellent breeding boars, hybrid piglets and commercial pigs is conducive to preventing epidemics, improving the survival rate of piglets and reducing the cost of raising pigs.

Fourth, adhere to the implementation of high-density pig raising.

0.8m2 pigpen in winter 1 fattening pig, summer 1 pigpen 1 fattening pig. Because of intensive pig raising, saving pig houses, less investment in fixed assets, competition for food by fattening pigs, small activity space, sleeping after eating, rapid weight gain and shortened feeding cycle.

5. Insist on seeking benefits from science and technology.

Carry out the one-stop rapid pig raising method. Implement "five changes and one increase", that is, change fat pigs into lean pigs such as Landrace, York and Duroc. Second, feed a single feed instead of a matching full-price feed. Thirdly, the clinker feeding is changed to raw meal wet feeding. Fourth, change the hanger fattening into linear fattening. Using linear fattening method for weaned piglets can effectively shorten the fattening period, improve the fattening rate and increase economic benefits. Fifth, call the veterinarian for early prevention if there is no disease, and strictly control the four major infectious diseases, namely swine fever, swine erysipelas, swine lung disease and paratyphoid fever, so as to reduce the mortality rate and improve the survival rate and slaughter rate. One plus is to add additives and auxin.

Six, adhere to the timely slaughter and slaughter.

When the weight of fattening pigs exceeds 90 kg, the daily gain rate slows down obviously, and fat deposition is the main factor, so the more you feed, the less cost-effective, and the more fat you increase, the more you can't sell it. Although the feed utilization rate is high, it is uneconomical because of its small weight and low meat production rate. Generally, it is most suitable for slaughtering fattening pigs weighing 90 ~ 120 kg.

Scientific pig raising method-backward feeding method

In rural areas, most farmers still continue the traditional way of raising pigs, that is, using the "hook" feeding method. In the early stage, a large number of green and coarse feeds were fed, and only a small amount of concentrate feed was put in. When pigs grow to 50-60 kg, add a lot of high-energy concentrate to fatten quickly. Although this feeding method uses a lot of green feed and roughage, it can't meet the demand for protein and mineral elements in the early growth stage of pigs, which leads to the slow growth of pigs and the prolonged slaughter time, which usually takes more than one year, greatly increasing the consumption of feeding and maintenance. This feeding method not only fails to save concentrate, but also causes a lot of waste of concentrate.

However, a small number of pig farmers adopt a "one-stop" feeding method, that is, from piglets to slaughter, they have been fed with concentrated feed without adding any green feed or roughage. Although this method greatly shortens the feeding cycle and reduces the maintenance and consumption of feed, a large number of green roughage in rural areas have not been fully utilized, so the economic benefits are still not ideal.

Using "backward feeding" to raise pigs can effectively avoid the disadvantages of "hook" feeding method and "one-stop" feeding method, saving concentrate by 30% and 10% respectively compared with "hook" feeding method and "one-stop" feeding method, and the lean meat rate of pigs is high, which is very popular with consumers. The specific practice of "feeding pigs backwards" is:

From piglets to middle-aged pigs, that is, before 50~60 kg, concentrate with high energy and high protein was mainly used, and necessary feed additives were added, only a small amount of green feed was fed, and roughage was not fed. When the pig grows to 50-60 kg, the energy and protein level in concentrate will be appropriately reduced, the input of concentrate will be reduced, and the input of green feed and roughage will be increased, with the ratio of concentrate 62%, green feed 26% and roughage 12%.

The scientific basis of the "backward feeding method" for raising pigs is: because pigs are mainly long bones and lean meat, they need more protein and mineral elements, and at this time, the digestion and utilization rate of fiber is extremely low, so it is necessary to focus on concentrate to meet the needs of pig growth and development for protein and various mineral elements, so that pigs can grow rapidly and reduce unnecessary feed consumption. However, when pigs grow to 50~60 kg, the digestibility and utilization rate of fiber are improved, and the tolerance to roughage is enhanced, so the intake of roughage is increased.