The empty pregnancy period of sows refers to the period from weaning to mating of piglets. Reasonable feeding of empty pregnant sows in the process of raising pigs can promote normal estrus and improve egg production. Quality and breeding rate and conception rate after breeding, so as to achieve higher production efficiency. So how to feed sows during the empty pregnancy period? Today, Xiaoyu will take everyone to understand the main points of feeding and management of sows during the empty pregnancy period.
1. Environmental conditions
The main point of raising sows during the empty pregnancy period is to promote their estrus as soon as possible and timely mating, so that they can conceive again, but the physique of sows after weaning has not yet Complete recovery, so the breeding environment must be kept dry and clean, and the temperature and humidity should also be suitable, not too high or too low, and good ventilation and air permeability must be maintained to ensure fresh air. If the breeding environment is poor, it will affect the estrus, ovulation and mating conception it supports, so the breeding environment is a prerequisite.
2. Intensive feeding
Sows can go into estrus normally about one week after weaning, and the breeding pregnancy rate at this time is extremely high, reaching more than 90%, but many sows The main reason for the failure of normal estrus is poor body condition or inflammation of the birth canal. In many farms, the sows continue to secrete milk and cause mastitis, so the amount of feeding is greatly reduced, resulting in insufficient nutrition for the sows, so that they cannot recover normally. This is the wrong feeding method. It should be replaced in time. Feed for sows should be fed to aphrodisiac sows or gilts. You cannot continue to feed lactating sows. Add a lot of vitamins and antibiotics to the feed to prevent mastitis. The daily feeding amount should be 3-4 kg , which can promote the sows to recover as soon as possible and increase the number of ovulation.
3. Methods of controlling normal estrus of sows
When sows are not in normal estrus, boars can be used to induce estrus, and test boars can be used to chase non-estrus Empty sows, through the smell of hormones secreted by boars and contact stimulation, cause the pituitary gland of sows to secrete hormones, prompting them to estrus and ovulate. At this time, it is a simple and easy method in breeding, and the effect is better. It is also possible to play boar courtship recording tapes, record conditioned reflexes, and promote ovulation, or incorporate non-estrus empty sows into the housing of estrous sows, and promote ovulation of empty sows through stimulating behavior.
The above are the main points of feeding and management of sows during the empty pregnancy period. The sows in the empty pregnancy period should adjust the feed and cannot continue to feed the lactating sows. Generally, sows can go into estrus normally about one week after weaning. If they do not go into estrus for more than ten days, then corresponding aphrodisiac measures must be taken. (Source: A Code of Raising Pigs)