Binary hybrid pig The two-way hybrid pigs are mostly hybrids of two foreign pigs, and the next-generation sow is mainly used to produce three-way hybrid pigs. Binary hybrid boars are usually castrated for fattening. Under the same production conditions, the production of Changbai and Dabai with good production performance was carried out by hybrid production. The litter size was about 12% higher than pure white or white, and the litter weight of weaned pigs was about 15% higher than pure white or white. The growth rate of two-way hybrid pigs is similar to that of purebred pigs, and the lean meat percentage is the average of the parental generation. The maternal and lactating capacities of the binary cross sows are significantly better than those of purebred pigs. Compared with purebreds, the binary crossbred pigs have strong resistance and are more resistant to roughage. Three-way hybrid pig Ternary crossbred pigs are the next-generation swine produced by the terminal father-family two-way hybrid sows, such as Du Changda or Du Dachang long-merchandise pigs. The three-way crossbred pigs mainly combine the advantages of the binary crossbred pigs and the advantages of the terminal male parent to produce a commercial pig with a high growth rate and a high lean meat ratio to obtain maximum economic benefits. Under the same production conditions, high-quality binary cross sows and Duroc boars were produced in three-way hybrids, and their litter size was higher than that of pure white or landrace 15%. Weaned litters have a litter weight that is 20% higher than purebred white or landrace. Due to the larger body weight of piglets at weaning, the number of days from birth to fattening is less than that of purebred pigs. The growth rate and lean meat percentage of hybrid pigs are similar to those of purebreds and do not change significantly due to hybridization.
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Binary and ternary hybrid pigs