Diagnosis, treatment, prevention and treatment of a case of porcine mma syndrome

In September 2007, a farmer in Tangqiao Town of our city raised more than 10 sows to give birth one after another, among which 3 sows suddenly raised their body temperature on the 3rd day after delivery, swollen breasts, refused to feed piglets, and their vaginas were continuously discharged with reddish brown lochia. The vaginal mouth and anus were contaminated by mucus. We initially suspected that it was uterine infection caused by retained placenta. The treatment effect of antibiotics was poor. Later, comprehensive measures were taken, and the condition improved and gradually recovered. The relevant information is as follows:

1. Etiological investigation and clinical symptom analysis

The farmer has a history of more than 10 years@#@227 @#@. The sows have been raised in steel tubes at intervals since the year before last. The sows are usually raised in stalls. After breeding and pregnancy for 90 days, they are put into the delivery room to wait for delivery. The pig farm sanitation disinfection work is done well, cleaning and disinfection twice a week every day. Vaccinate swine fever, swine erysipelas, swine pneumonia, Streptococcus suis and swine blue ear disease vaccine every year. In 2006, sow farrowing was smooth and piglet survival rate was high. September 2007 appeared purple breasts, there are lumps, vaginal lochia discharge, piglet screen weak hunger. We inquired about the relevant feeding management, and there were two main changes in the complaints of livestock: one was the change of housing. In the past, there was a sow delivery room beside the isolation pen. In June 2007, a sow delivery room was built 200m away from the north of the original sow house. This batch of sows were waiting for delivery in the new delivery room; the other was the change of feed. After the sows entered the delivery room, the pregnant sow feed produced by a feed factory in Shanghai was changed to self-prepared feed, with the protein level reaching 18%, and the energy was equal to the original feed. From clinical symptoms: sow suffering from mastitis, metritis, agalactia. The sow udder is red and swollen, the rear udder has 2~3 hard lumps, the udder skin temperature rises, a little milk flows out or there is no milk when massaging the udder, the uterus expands when touching the rear abdomen, the sow groans in pain, the vagina flows out reddish brown mucus when pressing hard, the vaginal opening and anus are contaminated by mucus, and the piglet screen is weak and hungry. Based on the above clinical symptoms, we ruled out the possibility of a single disease and diagnosed mastitis, metritis, no milk (MMA) syndrome.

2. Treatment and Prevention

2.1 Three sows were treated with combined therapy:

(1) Antibiotic treatment: penicillin, streptomycin, dexamethasone, twice a day, for 5 days.

(2) Remove lochia in uterus, oxytocin 50 units, 2~4 times/day, and separate piglets before injection, put them back 10~15 minutes later, sows can lactation.

(3) To strengthen stomach and relieve constipation, drink sodium sulfate or mirabilite 15g and 500mL water once a day.

(4) Supplement glucose VC,VB6, give juicy green feed.

After using the above method, sows and other piglets were cured except 4 piglets that were too weak to suck and died.

2.22007 In March 2013, the sow gave birth again. We asked the pig farm to take the following measures:

(1) The sow enters the new delivery room after 75 days of pregnancy, and the vehicle is transported when driving the sow (the last time is forced pull). Acclimatize the sow to its new environment.

(2) Feed recovery using late feed of pregnant sows from a feed factory in Shanghai and gradually reducing feed one week before farrowing.

(3)Cefradine was administered orally to sows from 5 days before parturition to 3 days after parturition.

(4) 5~10 tablets of rhubarb soda were given to prevent sows from defecating before parturition.

No sows developed MMA syndrome after using the above measures.

3. Discussion

3.1 MMA syndrome is easy to occur in intensive pig farms, so far its exact etiology is not very clear, but many factors alone or combined effects, of which environment and feed are stress factors. The pigs that developed the disease in 2006 all experienced environmental and dietary changes, especially when sows were driven to new delivery rooms and pregnant sows reacted strongly with strong pulling, while sudden dietary changes promoted MMA syndrome.

3.2 In the treatment must use comprehensive treatment methods, antibiotic treatment is not comprehensive, must use oxytocin, one is to contract the uterus to eliminate uterine dirt, enhance intestinal motility, and a small amount of prolactin. In addition, it is necessary to cooperate with the application of drugs to enhance physical fitness, strengthen stomach and diarrhea. Only in this way can we keep the intestinal tract unobstructed and improve the immunity of the body.

3.3 In order to reduce the environmental stress factors on sows, we suggest that sows in late pregnancy should enter the strict disinfection delivery room in advance, generally 75~85 days after pregnancy, do not implement tough measures, so that they have a relatively long period of adaptation to the environment, feed should continue to use the original feed can not suddenly change. 113 days after pregnancy or from the nipple can squeeze out a small amount of milk when the beginning of food reduction, generally 2/3 to 1/2 of the original, adequate clean water. In addition, a small amount of antibiotics should be administered to achieve the purpose of antibacterial and anti-inflammatory.