Analysis of pig B-ultrasound examination: Endometritis is one of the main diseases of sow reproductive disorders and has been plaguing large-scale pig farms. According to statistics, the incidence rate in general pig farms is about 20%, and some pig farms even reach more than 40%. A large number of reports at home and abroad show that the pathogens of this disease involve a variety of pathogenic microorganisms, such as Escherichia coli, Streptococcus, Staphylococcus, etc. It usually occurs after delivery or abortion. The image of Boxianglai pig B-ultrasound machine can be seen to have a large amount of gray-white flocculent purulent secretions flowing out of the vulva, sometimes with a slight yellow or even dirty color, which often leads to abnormal estrus of sows, difficulty in conception or frequent return of estrus even if estrus, increased stillbirth, difficulty in recovering appetite of sows after delivery, less milk after delivery, and yellow and white diarrhea in suckling piglets. If the treatment is unfavorable and it EVOlves into stubborn endometritis, it will greatly increase the elimination rate of breeding sows. According to the survey, in factory pig production, sows eliminated due to endometritis account for 60% of the eliminated production sows, which undoubtedly has a huge impact on the economic benefits of pig farms.

Analysis of the causes of endometrial inflammation using B-ultrasound in pigs

1. Observation of B-ultrasound in pigs The birth canal is infected during delivery. Delivery is the "life and death" of sows. The body's resistance is reduced and the disease resistance is weak. Under normal circumstances, endogenous pathogens exist in the uterus but cannot multiply in large quantities; but when subjected to some stress or lack of some vitamins, endogenous bacteria can multiply in large quantities, causing an imbalance of the flora in the uterus and suffering from endometritis.

Training site for Pig B-ultrasound machine

2. Dystocia and improper delivery

We call delivery that lasts more than 4 hours a day a dystocia. Due to the implementation of large-scale pig farm feeding and management methods, prolonged delivery and dystocia have become common problems in pig farms, and there are two common delivery methods in pig farms: pig digging and oxytocin injection. Among them, even if the sow's vulva and arms are disinfected, the invasion of exogenous bacteria cannot be avoided, which greatly increases the chance of birth canal infection; and the harm caused by oxytocin to sows is even more serious. Professor Liu Zikui of Hunan Agricultural University reported that using oxytocin on sows is 100% wrong. Oxytocin causes tonic contraction of uterine smooth muscle, and at the same time, the cervix also contracts, causing the cervix to close prematurely. In this way, after the sow gives birth, the placenta, dead fetus, lochia, etc. in the uterus remain and cannot be expelled from the body, and then corruption and fermentation occur, causing infection of endometritis.

Training site for Pig ultrasound machine 2

3. Infection during artificial insemination

During artificial insemination, the external disinfection of the boar's reproductive tract is not thorough, resulting in the introduction of some pathogenic microorganisms into the semen during the semen collection process, or improper disinfection of the sow's vulva causes exogenous bacteria to be brought into the birth canal as the cervix opens during insemination; or instrument infection and secondary bacterial infection due to unskilled or frequent operation of insemination personnel causing damage to the birth canal.

4. veterinary B-ultrasound observation of sows suffering from reproductive disorders

When sows suffer from reproductive disorders, such as porcine parvovirus disease, pseudorabies virus disease, swine fever, porcine epidemic encephalitis B, porcine blue ear disease, and porcine brucellosis, it is easy to cause sows to have miscarriages and stillbirths, especially primiparous sows, which need more attention. Once a sow has a miscarriage, the cervix is over-open, the resistance is reduced, and it is easy to be infected by bacteria, causing endometritis.

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