In pig production, sow feeding and management is the weakest link. At present, there are only 14 pigs slaughtered per sow per year in China, which is far from the international advanced level of 20. The efficiency of producing sows is low and the waste of resources is very serious. In particular, after the improvement of varieties, many small and medium-sized farmers continue to feed in accordance with traditional methods, resulting in sows that do not have estrus, stillbirths, serious abortion problems, long empty periods, fewer births per year, and high mortality rates of piglets. The main reason is that scientific rearing has not been carried out according to different physiological stages of the sow production process. Especially in recent years, reproductive diseases such as swine blue ear disease, pseudorabies virus, and swine fever have frequently occurred, resulting in a serious decline in the productivity of fertile sows. At the same time, due to unscientific breeding, the harm of these diseases has been exacerbated, and the sow's production capacity has further declined. This has caused severe fluctuations in the live pig market in China, and farmers have also suffered heavy losses.
Increased efficiency and efficiency through the use of technologies that increase sow production capacity: through the promotion of directional breeding of gilts, breeding techniques to increase the number of litters of pregnant sows, feeding techniques to increase lactation sows’ milk production, and the prevention of sow breeding epidemics. The system technology will increase the number of pigs per sow provided by the current sow from the current 14 to 16 or more, and raise the breeding efficiency by more than 20%.
Technical points:
(1) Oriented cultivation of gilts: According to the nutritional needs of different breeds, promote the use of spare pigs and feed technology, change the feeding methods of pigs rearing pigs, and make the gilts reach ideal conditions for use, and improve sows. Years of reproductive life.
(2) Nutrition regulation technology: According to local feed resources and selecting high-quality feed ingredients, feed formulation is designed to achieve the ideal reproductive status of the sow so as to increase the number of litters and piglet vitality.
(3) Breeding technology to increase the lactation sow's milk yield: to solve the problem of energy limitation and protein and energy balance in the feeding process of small and medium-sized farmers. So that the sow to maximize the amount of milk, at the same time, to ensure that the sow after weaning can normal estrus, breeding, and improve sow reproductive capacity.
(4) Increase the number of sows ovulated and the survival rate of embryos and increase the number of litters in the litter by means of ovulation regulation before mating.
(5) Control breeding epidemics through scientific epidemic prevention and immunization programs, and improve reproductive performance of fertile sows. The major prevention and control breeding epidemic diseases are blue ear disease, pseudorabies, swine fever and porcine parvovirus diseases.
On the basis of the above-mentioned major breeding techniques, supporting sow rearing and management at different physiological stages, feeding techniques, and sow breeding environment improvement techniques.
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