If the feeding and management of pregnant sows is improper in the summer, it may easily lead to impediment to the growth and development of the fetus and even cause miscarriage and cause diseases. Therefore, special attention should be paid in the summer to strengthening the feeding and management of pregnant sows. The specific pig raising techniques are as follows:
1. Keep quiet.
In the peak period of embryonic death, if the sow is disturbed or disturbed, it will easily lead to metabolic disorders, and the intrauterine environment will be inhibited to varying degrees, which may increase the number of embryonic deaths. Therefore, during pregnancy, it is necessary to keep the shed quiet, avoid being close to strangers, prevent harassment of pets or small animals, prohibit strong noise, and do not rush, sow the sow, and ensure that the sow is free from any interference.
2, strengthen management.
Feeds for pregnant sows must be of good quality and must not be used for mildew, contamination, frozen feed, or silage. In summer, the rate of mating and stillbirth is higher. Various measures must be taken to control the small environment in the pig house. The ambient temperature should be controlled at 15 to 25°C and the relative humidity should be controlled at 70 to 80.
3, control the amount of feed.
After mating, the sows become very quiet and their feed intake increases rapidly. If they are allowed to feed freely, body lice will increase rapidly. This will not only result in stillbirth, but also cause difficulties in childbirth. In the pre-pregnancy period (within 21 days after mating), the daily feed volume is 2 kg, the mid-gestation period (22-60 days), the daily feed volume is 2.5 kg, and the late-gestation period is 3 kg daily, and the net weight gain during pregnancy is maintained at about 20 kg.
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