Improper feed feeding increases the cost of raising pigs

Different stages of pigs have different nutritional needs. The piglet stage is the key period for the development of the intestine and the stretching of the skeleton. It has a high nutritional demand. However, many pig farms use the fertiliser too early in the nursery stage. This reduces the cost on the surface. However, nutrition can not meet the growth needs of pigs, the skeleton can not be opened, there is compensatory growth of long fat but not long lean meat, resulting in high feed-to-meat ratio in the late rearing period, but instead, the slaughter time is elongated and waste of disguise Feed.

In some pig farms, sows of better shape are selected as gilts before slaughter pigs are slaughtered. In some pig farms, sows are replaced with sows after sowing, which often results in late gilts remaining. Late estrus, or even estrus after 300 days of age, can only be eliminated as fat pigs, wasting manpower and feed in vain.

After the sow reaches 75 kg in weight, the reproductive system begins to develop, and there is a high demand for special nutrients such as vitamin A, vitamin E and folic acid; in addition, sows will carry a lot of weight during pregnancy in order to strengthen bones and extremities. Hoof, improve the use of years, sows in the calcium, phosphorus and other mineral content than the fertiliser, and the high energy of fertilization, will lead to partial fertilization pigs, is not conducive to heat, but also cause gilts Dysplasia, excessive fat infiltration into mammary acinar, will limit the blood circulation of the mammary gland, affect the amount of lactation, and thus affect the growth performance of piglets. In summary, it is recommended that after a gilt weighs 75 kilograms, special gilt stock is fed until breeding, in order to promote its normal estrus and increase its useful life.

In some pig farms, boars are fed with sows for a small number of boars. On the one hand, the sow has a higher energy content, which can easily result in fattening boars and poor libido. On the other hand, the sow feed lacks enough organic selenium and special amino acids for the boar to produce semen and increase sperm motility. , ω-3 fatty acids, etc. Therefore, feeding boars to boars will not only reduce boar's libido and longevity, but also result in reduced number of litters and increased number of litters in pig farms, affecting the comprehensive production performance of pig farms, and waste of feed in disguised form.

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