Scientific breeding of three-way hybrid pigs

First, the selection of piglet piglets if the fetus, lactation growth and development is good, to the fattening period of daily gain, weight ratio and other production performance is very good. The sign of well-developed growth of Miaozhu is that the body weight at 45 days can reach 15 kg or more. Second, the use of full-price feeds to use full-priced feeds is one of the key measures to obtain the maximum benefit of the production of three-way hybrid lean hog. The current full-priced feed brands are many, but the prices are higher. Farmers can use self-produced agricultural and sideline products to feed different concentrations of concentrated premix at different growth stages of the pig. Third, multi-stage pigs require different amounts of nutrients in each stage is different, for this purpose: the pig's entire feed can be divided into several stages, the 'higher price protein feed - concentrated premix The proportion of basic materials is adjusted once every 10 days, that is, the proportion of premix is ​​decreased by 1 percentage point from 20% every 10 days. According to tests, this method is 5.49% higher than the three-stage feeding method, and the material consumption is reduced by 2.86%. Fourth, dry feeding, feed restriction Because many nutrients in the feed are easily destroyed at high temperatures, and some nutrients will be lost in the water or some chemical changes occur, it should vigorously promote the dry feeding technology (except beans feed). Feed restriction can increase feed utilization and carcass leanness. Generally, the weight of pigs should not be limited before 60 kg. After 60 kg, the digestive organs of pigs are mature and the feed intake is increased. Moderate feed restriction can save the feed, reduce fat deposition and increase the lean meat ratio. The standard of feed restriction is generally 80%-85% of the full food intake. Fifth, timely slaughter of three-way hybrid lean pigs generally weighing 70-90 kg. VI. Reducing stress Because of the greater proportion of external blood of the three-way hybrid lean pigs, the stress on the environment is stronger. Therefore, the pig house must be kept cool in winter, cool in summer, ventilated and breathable, and suitable in density. In addition, we must pay attention to the prevention of epidemics, isolation, and regular disinfection to ensure the safety of the herd. China Agricultural Network Editor

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