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Reasons and Countermeasures for the Long-term Delivery of Sows
The sow's litter size ranges from the first suckling pig's output to the entire litter discharge process, which is referred to as the tillering or the birth process. The sow's normal time is usually two to three hours. Some sows have a reason for some reason. Make the production process too long. Through long-term observations, the longer the sow’s gestation period (mean 114 days) and labor time, the more dead fetuses and the greater the loss. The main reasons for the long sows’ farrowing period are as follows: First, the number of times of parity: First-time sows, especially sows with early-matching-lower sows, have their most productive periods of ten hours or so, and they are The shortest period of production of sows is only about 1 hour, and the longest is only 3-5 hours. The second category is the introduction of foreign yolks such as Yorkshire, Duroc, Landing, Hampshire, Sage, Decathlon, Pitlan, etc. The pig production process is about 1-2 hours long and may be related to adaptation. The third is the age: 8 or more-old sows in the late stage of labor, due to fatigue, fatigue, uterine contractions and abdominal pressure weakened, the labor process is often delayed to more than 10 hours. Fourth, stillbirth: When the sow is infected with Japanese encephalitis, parvovirus, pseudorabies, and other reproductive disorders, the mid- or late fetal death in the sow's midwife, often a few hours to produce a dead fetus wrapped in rotten tires Or "mummy", some production process for 3-4 days or even longer. The fifth is the breeding interval: the young sows have a strong sexual desire and the estrus lasts for 3-5 days. Some sows began to receive breeding and breeding, because they did not fall for a long time, and some were reconstituted in intervals of 2-3 days. As the compounding interval is too long, the labor process is slightly longer. Sixth, the fetus is too big: Some pregnant sows fed too much fat, fetus growth and development. The output is hard and the delivery period is extended. Seventh, Haraming Harassment: When sows are farrowing, most sows are nervous and sensitive. When the farrowing room is in the birth room, if there is a living person, he will become more nervous and nervous. In order to prevent the sows from having a long delivery period, we can take the following measures: First of all, it is not easy for the sows to start early and the first sows can be 10-12 months old and weigh more than 100 kilograms and have two or three periods of time. breeding. Second, seven or more old sows were eliminated, except for some excellent ones. Furthermore, we must do a good job of preventing and treating diseases, preventing the occurrence of some reproductive disorders and over-sowing sows. In addition, it is advisable to use 2-12 breeding intervals between 8 and 12 hours. It is best to breed 1 time in the morning and evening of the day, and to find a quiet and comfortable environment for the sows to avoid giving birth to the delivery room. For the late parturition period, when fatigue is excessive, and when the baby is unable to give birth, it can be infused intravenously with 10% glucose injection 500-1000 ml as soon as possible. At the same time, pituitrin can be used 10-50 units for intramuscular injection.