Winter and spring sheds pay attention to four issues

In the winter season of northern China, pigs are mostly kept in plastic greenhouses, which effectively improves the economic benefits of raising pigs. However, in practice, many farmers' plastic greenhouses have many problems that restrict the normal growth and development of pigs. Recently, the reporter interviewed Yang Heping, professor of animal engineering branch of Yangling Vocational and Technical College, and asked him to talk to the farmers about what issues need to be paid attention to during the winter season.

Temperature Yang Heping said that in northern China's winter and spring climate is cold, in order to maintain the temperature of greenhouse pigs, especially in the winter night should be covered with a layer of cold straw on the plastic shed, the curtain is best to use kraft paper liner, outside the straw Made, this can reduce the loss of heat in the shed. During the day, the straw curtain on the plastic shed can be rolled up without affecting the light.

Ventilation Yang Heping told reporters that although the degree of confinement in plastic sheds is not as good as that of standard closed-type pig houses, it is much stronger than that of ordinary open-type pig houses. Therefore, plastic sheds can easily accumulate from feces, feed, and pigs themselves. The harmful gases such as ammonia, hydrogen sulfide, and carbon dioxide. Therefore, ventilation holes must be provided in the shed to reduce the humidity inside the house and discharge the dirty gas.

Feeding density Yang Heping stated that proper increase of stocking density has a heat preservation effect, but excessively increasing stocking density will have a negative impact on the growth and development of pigs. Therefore, the housing density of the sheds should not be too large, empty, pregnant sows should not be less than 2 square meters per head, nursing sows should not be less than 4 square meters per head, breeding piglets should not be less than 0.4 square meters per head, fattening Pigs should not be less than 1 square meter per head.

The winter and spring epidemic prevention season is the high incidence period of animal epidemics. Yang Heping suggested that farmers must do “three incompatibility, two integrations, and one guarantee” to prevent the occurrence of swine diseases. In other words, the epidemic prevention link can not be reduced, the epidemic prevention standard can not be lowered, the epidemic prevention type can not be reduced, the combination of disinfection and epidemic prevention, the combination of deworming and epidemic prevention, and the effect of epidemic prevention can be ensured.

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