Before breeding, the sow should strengthen feeding and management, improve the body condition of the sow, make it normal estrus, and discharge high-quality eggs to increase the conception rate and the number of embryos to be conceived.
Feeding
According to the body condition (fat lean), the sows are divided into 4 to 6 heads per lap. The sows with poor body condition should be marked and taken care of in the rearing period; sows that are overweight should reduce the amount of feed and reduce the energy level in the feed.
Short-term excellent feeding
For gilts with limited feeding and lean sows after weaning, short-term excellent feeding or aphrodisiac feeding should be implemented to improve the sensation in the short term and promote estrus and ovulation.
Specific approach: Feed restriction gilts start from an estrous cycle before the scheduled breeding date. Weaned sows after weaning start from weaning and increase their daily feeding amount by 50% to 100%, and can also add 5% to the feed. ~10% fat. These additional feeds have a significant effect on stimulating the endocrine function of the sow and enhancing the reproductive system activity.
Observe
Observe the sow regularly, understand the sow's physiological condition, and allow the estrus sow to breed in time. Look for the cause of the estrus-free sow and take timely measures to treat it.
In addition, the pig house should be kept clean and dry, with good air circulation, good lighting, and suitable temperature.
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