The degree of gluteal growth in sows is not a key condition for selection

When breeding pigs, many people regard the size of the sow's hindquarters as the conditions and criteria for purchasing the pigs. In fact, this practice is wrong.

The pigs with full hindquarters development are different from those with commercial pigs, because the rearing pigs with particularly developed hips are not susceptible to estrus and are difficult to mate with. They are prone to dystocia, often with concave backs, deformations, and high elimination rates. Therefore, breeders cannot select breeding pigs according to the requirements and standards of commodity pigs.

Back-sucking sows usually have poor lactation and piglets have low survival rates (back-thickness and positive lactation are positively correlated).

Many customers are always looking for a “double muscle hip” or “double muscle back” type of pig when purchasing a breeding pig, which is also unwise. Because the concept of "double muscle buttock" and "dual muscle back" is different, from the pig's hindquarters, the muscles on the right and left sides of the buttocks are plump, so it is called "double muscle buttock"; the muscles on both sides of the dorsal midline are seen from the back. Obviously known as "double muscle back", these are only a kind of pig's body characteristics, many lean-type purebred pigs or cross-breed pigs have such a body size, double-muscular pig's lactation force is 10% worse than that of normal pigs , directly affect the weaning weight of piglets. At the same time, the body size is not fixed. Parents do not necessarily exhibit double-muscle traits in their offspring of double-muscle traits. With the development of pig breeding technology, this gene will certainly drift, and it is more a manifestation of heterosis. .

In the production, a large number of farms have adopted the rear gluten development of sows as breeding targets for pig farms in order to grasp the cultivators' psyche, and have developed excessively through breeding techniques. After the farmers who purchase these breeding pigs return to their own farms and feed, the feed conditions change, the pig's hindquarters become smaller, and the estrus can't be bred normally. The elimination rate is generally around 40-50%. Many pig farmers in this area are in this respect. There are profound lessons.

Therefore, when farmers purchase pigs, they should not only pay attention to body shape, but also should focus on maternal characteristics. They should pay special attention to the appearance of body related to reproductive performance, such as strong and strong limbs, secondary sexual characteristics, such as teat, genital, body structure. The symmetry, etc., only sows developed particularly good hindquarters are not suitable for breeding. If you choose boars, you should focus on lean meat, carcass quality, thick limbs, growth rate, feed rewards and other traits and body appearance, which is the best measure to increase lean meat percentage and body size in offspring.

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