Adjusting gestational age structure
Choosing the timing of weaning
Do a good job during pregnancy
[NextPage]Late pregnancy management
From the 80th day of pregnancy to the birth, in order to ensure the rapid growth of the fetus, improve the birth weight and health of the piglets, this stage of the sow should be fed high-energy high-protein feed, the daily feeding amount is generally 2.3 ~ 2.8 kg. The sows were expelled from the in vitro and in vivo parasites 2 weeks before the birth, and the body surface disinfection was transferred to the farrowing house (bed) one week before the birth.
Lactation feeding
High-energy, high-protein feed should be fed during lactation. Generally, the crude protein is greater than 16%, and the digestive energy is greater than 3.1 mega-cal/kg. The amount of feed in the first 3 days after calving was 1.8 to 2.3 kg, and 0.5 kg per day was increased from the 4th day until free access.
1. Timely breeding, through the combination of pheromones, nasal and nasal contact, back-reflex test and other signs of estrus in the sow, the estrus should be identified twice a day, and the sows are considered as estrus after receiving the boar. Generally, the method of estrus is used twice for breeding. For the sows found in the morning, the first time in the afternoon, the second day is matched with the second day. For the sows found in the afternoon, the sows are first planted the next morning, and the afternoon is the first. Secondary breeding.
2. Use hormones to regulate the reproductive function of sows. The use of hormones can achieve better results in some cases. However, the use of hormones must be based on the management of feeding, to maintain the normal and moderately thin body condition of the sow, to prevent disease infection, and on this basis, the sows that can not be properly estrus can be adjusted with hormones.
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