Who is the "culprit" of this sow miscarriage?

The following contents are sorted out from Fan Fuhao's WeChat group [Life Management Forum-West Group](views are for reference only): Pig Information Network Wang Shihong

-------------------------

Cheng Shuigui: Teachers, please help me diagnose, thank you! A recent field of continuous premature birth, abortion, all stages have, and the field of uterosis return rate are high. More than ten broods have occurred since the end of May.

Huang Chengfeng: Mold, heat stress?

Cheng Shuigui: @ Huang Chengfeng agrees. 

Zhao Shunxi: Endotoxin is more serious. If detected in this case, blue ear virus and pseudorabies virus should be more active. Abortion should be pseudorabies more likely. Summer chlamydia should also be taken seriously. The detection rate of similar cases in the Central Plains is quite high.

Huang Chengfeng: The body is broken, what disease do you have?

Cheng Shuigui: @ Zhao Shunxi See this pig like chlamydia infection? 

Zhao Shunxi: Focus on pseudorabies.

Cheng Shuigui: The test results show that the antibody levels of classical swine fever, pseudo-mania and blue ear are all OK.

Zhao Shunxi: Check wild virus antibody (pseudorabies), vaccine antibody detection is of little significance.

Rachel Wang: See if there are rust-like bleeding spots on the sow's body surface and if there are abnormalities in the placenta. If the placenta has blood bubbles, suspicious with blue ear infection, if the needle size of white spots, suspected pseudorabies infection, soybean size white spots consider mycotoxin poisoning, calcified white spots consider chlamydia infection.

Cheng Shuigui: @ Rachel Wang abortion picture today can see what? 

Wang Rachel: @ Cheng Shuigui photo is not very clear. 

Zhang Guoxiang: Like abortion caused by blue ears.

Zhao Shunxi: Is there an increase in diarrhea of suckling pigs in delivery room?

Cheng Shuigui: Not much diarrhea.

Zhao Shunxi: Blue ears are indispensable. The fetus can be dissected and examined. As long as the metritis is serious, blue ears are generally in the active phase, pseudorabies normal immunity simply can not be controlled. The eyes and back are generally dirty. and metabolic disorders caused by exogenous toxins.

-----------------------------

The following is a supplement to the South Group:

Chen Yiping: Chlamydia epidemic in this pig farm.

Yang Jianxiong: At present, the incidence of abortion is large: first, mycotoxin accumulation poisoning; second, Eperythrozoon, Toxoplasma gondii, chlamydia, spirochete; third, brucellosis; fourth, heat emergency, heatstroke; fifth, virus focus on swine fever and pseudorabies. Especially for rabies. The basic immunity of sows is good, but the incidence of metritis and the proportion of returning to estrus are large. It's a little illogical to say mold. At present, the prominent point is that the proportion of metritis and return to love is large, abortion fetus stages, placenta return to gray, fetal skin bleeding. What is unusual about pigs at other stages? diarrhea, respiratory tract? Newborn foetuses, etc. According to the current situation, heat stress, damp heat caused by the exclusion of the target: chlamydia, Eperythrozoa, Toxoplasma gondii, Treponema sulcate, brucellosis. I focused on chlamydia and brucellosis. It is also important to consider these in conjunction with seasonal factors. Brucellosis and tuberculosis can be laboratory-verified, a little suspicious.

Chen Yiping: With the exclusion method, toxoplasma will cause abortion after the feed intake decreases. Chlamydia intake normal, almost asymptomatic performance abortion. When misdiagnosed as blue-ear virus or pseudorabies virus caused abortion, vaccination with blue-ear or pseudorabies vaccine produced more severe results and more pigs aborted.

Yang Jianxiong: Toxoplasma gondii attached to red body temperature rise, skin whitening. Mold body temperature unchanged, gray skin; Leptospira general proportion of late, while urine yellow-red. Leptospira skin yellowing rate, especially in the ear root. If it's chlamydia, there's a lot of delivery room problems. The diarrhea rate of pigs around 20 is high. Mild respiratory illness.

Chen Yiping: Why do many pig farms often have sow abortion? In addition to Chlamydia and Toxoplasma gondii, almost human factors create stress. [In addition to individual differences] heavy metals in premix, artificially added drugs, and various unknown additives, feed mold factors, body parasites, vaccine operation rough, vaccine excessive, temperature and so on. All factors that make pigs uncomfortable are called stress. Reducing stress is the most urgent problem to be solved at present.

Zhong Shiyang: Mold factors, as well as immune factors, including vaccines.

Han Chunguang: Abortion pigs should be eliminated as much as possible! Generally infected with some kind of pathogen, if continue to stay in the group will become a potential source of infection! The more of these pigs there are in the herd, the more sow herd problems there are.

Yang Jianxiong: Abortion is caused by non-infectious factors, followed by chlamydia, the incidence of schistosomiasis and mold have a great relationship. TB and TB suspicion, how did the problem arise?@ Han Chunguang's problem is to find out what is the main cause first. 

Han Chunguang: Some pig-raising problems are considered from the perspective of pig farmers, not necessarily clear up! We're not academics! As long as the pigs are stable. Pig abortion is definitely a problem, the key is a miscarriage, or a few miscarriages, is a succession of miscarriages, or a long interval abortion? How many days of miscarriage, what does the fetus look like after miscarriage? What does abortion sow show? You have to watch carefully! How big is the sow population? What is the monthly abortion rate? Is it normal for pigs?

The Tang Dynasty: It's not a habitual abortion. No need for elimination.

Han Chunguang: My opinion is that most of the abortion pathological reasons are more. Generally infected by disease, and many pathogens once infected, lifelong detoxification. So from a group perspective, elimination is better! A lot of people think it's heavy metals and mycotoxins, and if something goes wrong with this, it won't be a single abortion. It's a group problem. Sows will have problems in all stages, including empty pregnancy, suckling, and just breeding! At present, blue ear disease is the main cause of pathological abortion, which is often mixed with pseudorabies, swine fever, parvovirus, encephalitis B and other problems! I have seen a variety of fetal abortion test reports, which are mostly detected blue ear disease and mold, this is more prominent!

Chen Yiping: The title says: More than ten days have been premature abortion more than ten litters, return to high love rate. Personally, I firmly oppose Blue Ear. We all believe in science but based on reality. The tests carried out under the sub-health state of pigs can be false positive and false negative. There is no way to prove the authenticity. In fact, the detection methods at this time have lost their significance. Personal advice: this field abortion sow authentic "doxycycline" with ten days abortion problem should be able to control down. It is best to cooperate with sulfachlorazine sodium. Ten days at a time. Other follow-up work depends on the executive power of the boss.

Tang Dynasty: This situation should be analyzed in combination with the overall situation of the pig farm. If it is suspected that the abortion is caused by blue ear, the nursery should also be very unstable. Recently, the cases of proctoptosis, uterine prolapse, dystocia, abortion and edema of sows in various groups are worthy of attention.

Chen Yiping: Sows have a lot of problems. Feed mildew and heat stress in high temperature and humidity environment were the predisposing factors.