Reasons for long sow birth schedules and preventive solutions
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March 18 12:24:06, 2021
The entire process of sow farrowing, from the first piglet output to the final discharge of the placenta, is called delivery. The normal delivery time of sows is generally 1.5-3.5 hours. However, some sows have a longer delivery time due to various reasons, resulting in an increase in the stillbirth rate. First, the reasons analysis: 1, mating early maternal sows, due to the endocrine and reproductive system development and imperfect function will lead to prolonged delivery time. 2. The sows are over-fertilized and their movements are insufficient. The uterus contractions are weak during the farrowing period, resulting in prolonged delivery. 3, a variety of stress factors, such as birth harassment, heat stress, cold stress, etc.; 4, infection reproductive disorder diseases, such as parvovirus disease, blue ear disease, Japanese encephalitis, pseudorabies, Atypical swine fever and so on. 5. Excessive sows’ age or oversized fetuses can lead to prolonged delivery. The lack of certain special nutrients in sows results in a decrease in uterine secretions and a prolonged secretion of the uterus. Second, the preventive measures to solve: 1, the sow initial allocation time should not be too early, generally after the first oestrus after 1-2 seasons of breeding. When the gilts are bred for each estrus, the three compounding intervals should not exceed 12 hours each time. 2. The nutrition of pregnant sows should be sufficient and balanced (using sow professional health products---No. 1), but the feeding should not be much, especially in late pregnancy, so that the sows can reach a moderate degree of puberty. 3, according to the actual situation in the local area, formulate scientific immunization procedures to effectively prevent the occurrence of common reproductive diseases and sexually transmitted diseases in sows. 4, in the litter of sows to give them to create a comfortable, quiet, clean, air circulation, suitable temperature environment, to prevent the production of a variety of stress. Sows in late parturition, physical exertion, fatigue and inability to give birth, in addition to artificially assisted farrowing or drug production. Slaughtered sows with poor fertility should be eliminated in time. The most scientific method is to use high-pressure flushing to give birth: the specific method is to inject a 0.1% potassium permanganate solution into the sow's birth canal by using a high-pressure water gun (adjusted to 2-3 large pressures) when the sow begins to give birth. When a certain amount of water volume and pressure are reached, the sows can quickly produce a litter, usually within 2 hours, and greatly reduce the incidence of postpartum diseases in sows. Prevent the feeding of moldy feeds and large doses, long-term use of de-moulding agents.