There are 11 causes of diarrhea in piglets of different ages. How can we prescribe the right medicine to the case?

1-3 days old

Cause: red dysentery of piglets

Incidence: piglet red dysentery is caused by Clostridium welchii type C, transmitted through the digestive tract through diseased pigs and carriers. Type C Clostridium welchii exists in the intestines of some sows and pollutes the nipples, padding, feed, drinking water, utensils and surrounding environment of lactating sows after excretion of sows. 1-3-day-old piglets are infected after sucking breast milk or swallowing pollutants. The disease is sudden, and sometimes there is no time to find clinical symptoms that is rapid death, acute cases see reddish brown bloody feces, fishy smell, the fatality rate is very high.

Countermeasures: (1) carefully do a good job in the sanitary cleaning and disinfection of the pig house and its surrounding environment. Comprehensively and thoroughly disinfect the sow delivery room, piggery, floor, appliances, etc.

Before entering the delivery room, the sow should wash the abdomen, hindquarters skin and breasts with warm water and disinfect thoroughly with a small irritant disinfectant. Before feeding colostrum, squeeze out a little milk and discard it, and then let the piglets eat milk to reduce the incidence and spread of red dysentery in piglets.

(2) pay attention to immunity. Sows were immunized with C-type Clostridium welchii vaccine during pregnancy. The first or second pregnant sows were immunized once 30 days and 15 days before delivery, intramuscular injection of 5 × 10 ml / time with Clostridium welchii type C vaccine and intramuscular injection of 3 × 5 ml / time in 15 days before delivery for more than 3 parturient sows.

(3) Drug prophylaxis. Before the piglets were born but before they ate colostrum, each piglet took 200000 units of penicillin potassium and streptomycin for 2 or 3 days, once a day, which had a certain preventive effect. Can also be oral doxycycline, compound amoxicillin. In the pig farm where the disease often occurs, immediately after the piglets are produced, the whole litter of piglets are injected with cefquime sulfate and hemostat, 1ml / head, twice a day for 3 days, and appropriate oral artificial rehydration salt or glucose to prevent dehydration and enhance resistance. If conditions permit, each pig can get better protection by injecting 3 ml anti-piglet red dysentery serum per kilogram of body weight.

Two or two or three days old

Cause: sows are infected with reproductive and respiratory syndrome

Incidence: porcine reproductive and respiratory syndrome is an infectious disease of pigs caused by porcine reproductive and respiratory syndrome virus. The main clinical features are that sows often have fever, abortion, premature delivery, mummified fetus, stillbirth, weak fetus and other symptoms; piglets show abnormal dyspnea and high mortality, mostly die immediately at birth or a few days later. In piglets with normal delivery, red dysentery occurred in piglets more than 2-3 days old, while diarrhea in premature piglets was often more serious, with elevated body temperature, abnormal dyspnea, paste dysentery, gray or black tar-like loose stools and blood in some stools.

Countermeasures: at present, there is no effective treatment, only antipyretic, antibacterial, purification of virus, recovery of the body after illness.

At present, the use of vaccine is the most effective and feasible way to prevent and control the disease. A variety of inactivated and attenuated vaccines have been developed at home and abroad. For disease-free pig farms and pig farmers, pigs were vaccinated with inactivated porcine reproductive and respiratory syndrome vaccine one month before breeding and one month before parturition, and boars were vaccinated once every 4 months, three times a year. For diseased pig farms and pig farmers, under the condition that the epidemic situation could not be controlled, sows were vaccinated with attenuated porcine reproductive and respiratory syndrome vaccine one month before mating and one month before parturition, and the piglets were vaccinated with attenuated porcine reproductive and respiratory syndrome vaccine one day after weaning and one month after weaning.

Porcine reproductive and respiratory syndrome attenuated vaccine is not used in general, but only when 3-18-week-old piglets can not control the epidemic situation. Piglets were vaccinated with porcine reproductive and respiratory syndrome attenuated vaccine one day after weaning and one month after weaning.

Three, one to seven days old

Cause: yellow dysentery of piglets

Morbidity: acute and fatal diarrhoeal disease of newborn piglets caused by certain serotype pathogenic Escherichia coli. Most of them occur in piglets from a few hours after birth to 7 days old. It is mainly characterized by the excretion of yellow mucinous dilute feces and acute dehydration, weight loss and high mortality. It is susceptible to poor management, low ambient temperature and poor sanitary conditions in the house.

Countermeasures: after the onset of the disease, it is very important to recuperate sow milk. Sow diets should be rationally matched, dietary nutrition should be improved, feed should be restricted in the first month after breeding, and more attention should be paid to the comprehensiveness of dietary nutrition after 80 days of breeding to ensure a balanced and adequate amount of postpartum milk. Sows have to wipe and massage their breasts with hot towels every day from one week before giving birth to one week after delivery. Strict disinfection system, seriously disinfect every corner of the pig house, control the temperature and humidity of the small environment of the delivery house, and pay attention to ventilation.

Escherichia coli trivalent vaccine was injected once 30 days before parturition and once again 15 days after delivery, which could play an ideal protective effect on piglets. Piglets with diarrhea and dehydration can be fed with oral rehydration salts (10% glucose saline 10 ml, 10% vitamin C2 ml) for rehydration.

4. 1-10 days old

Causes: transmissible gastroenteritis and epidemic diarrhea in pigs

Morbidity: piglets at this age often have diarrhea in the cold winter and spring. Usually the first to see vomiting, followed by acute watery diarrhea, feces are mostly yellowish green or grayish brown, accompanied by flocculent curd fast. Piglets are rapidly dehydrated, emaciated, eat little or not, and the prognosis is more dead. even the undead piglets become stiff pigs due to growth stagnation.

Countermeasures: every winter and spring, for all sows waiting for delivery, 3 ml of inactivated vaccine of porcine epidemic diarrhea-transmissible gastroenteritis should be injected 30 days before delivery, which can have a good protective effect.

Once the disease occurs, the drug treatment effect is not obvious, but the use of gentamicin, kanamycin, chloramphenicol, quinolone drugs for antibacterial and anti-inflammatory at the same time, is also a good way to control death. 5% glucose and sodium chloride injection 20ml, vitamin C 250mg, vitamin B6250mg, once intravenously, once a day in the morning and evening.

Five, 8 and 15 days old

Cause: coccidiosis

Incidence: piglets infected with coccidiosis will also have diarrhea symptoms. Most piglets have diarrhea before and after 10 days of age, and their feces are mostly white or yellow, atherosclerotic to water, but there is generally no bloody stool. The piglets with diarrhea gradually lost weight, their growth stagnated, and the growth and development of piglets in the same litter were uneven.

Countermeasures: piglets and adult pigs should not be raised in mixed groups, keep the enclosure clean and dry, and isolate and treat diseased pigs in time.

The treatment of piglet coccidiosis can be treated by oral or intramuscular injection of sulfonamide, 25 mg / kg body weight and 30 mg / kg body weight for 5 days. In addition, chlorophenylguanidine hydrochloride, monomycin, Maduramycin, "three words" coccidial powder, etc., also have a better effect.

Six, 10 and 30 days old

Cause: White dysentery of piglets

Morbidity: a diarrheal disease caused by certain serotypes of Escherichia coli. Diseased piglets excreted gray paste dung, fishy smell, pollution around the anus and hindlimbs, sick pigs eat little or no food, dehydration, gradually emaciation, exhaustion and death.

Countermeasures: the prevention and treatment methods refer to the yellow dysentery of piglets.

Seven, 10 and 60 days old

Cause: rotavirus disease

Incidence: porcine rotavirus disease is an infectious disease of pigs with diarrhea as the main clinical feature caused by rotavirus. Piglets often occur in cold winter and spring, mainly manifested as mental fatigue, not eating or eating less, often vomiting, watery or paste, yellow-white or dark black dysentery, rapid dehydration and so on. Most of adult and adult pigs are recessive infection, which is a common cause of porcine gastroenteritis.

Countermeasure: at present, there is no specific drug treatment. However, the use of antibiotics and sulfonamides can reduce the death caused by secondary bacterial infection. Stop breastfeeding after the onset of the disease, immediately drink freely the electrolyte fluid containing glucose-glycine, or intravenous injection of 5% 10% glucose saline and 3% 10% sodium bicarbonate solution to maximize the prevention of dehydration and acidosis. Build and maintain a good piggery environment to prevent thieves from entering and leaving, and maintain a relatively constant temperature.

Eighty, fifteen and ninety days old

Cause: round nematode disease

Incidence: Strongyloides of piglets is a parasitic nematode disease caused by Angiostrongylus orchidae parasitic in the small intestine of piglets. The infection rate of 15-30-day-old piglets is high and that of 60-90-day-old pigs decreases gradually. It is more popular in the rainy season and summer, and it is more likely to occur when the pigsty is dirty and wet. When a large number of larvae are parasitic in the lungs of piglets, they often cause eczema, bronchitis, pneumonia and pleurisy, while when a large number of adult Angiostrongylus parasitized in the small intestine of piglets, they will have vomiting, abdominal pain, weight loss, anemia, dysentery, blood or mucus in their feces, and finally die of extreme failure. Autopsy showed congestion, bleeding and ulcers.

Countermeasures: disinfect regularly and keep the environment of pig house dry and clean. Levamisole, albendazole, ivermectin and thiabendazole can be taken orally or mixed with feed to dispel all worms.

9. After weaning

Causes: atypical classical swine fever, pseudorabies

Incidence: most of them are infected by sows with atypical swine fever. Piglets born to sows with atypical swine fever grow well during the lactation period. Once weaned, the piglets will have a rise in body temperature, generally reaching more than 41 ℃, not eating or eating less, intractable diarrhea, feces from brown to yellow, later defecation incontinence, feces dripping down the hind legs, stench, rapid weight loss, fuchsia in the lower abdomen and ear roots, and death after about a week.

The weaned piglets infected with pseudorabies mainly showed neurological symptoms, diarrhea and vomiting, with an incidence of 20%-40% and a fatality rate of 10%-20%.

Countermeasures: both diseases are caused by viruses, and there is no effective treatment at present. Immunization is the foundation of prevention. According to the local epidemic law, antibody level, the health status of pigs, and the type of vaccine selected, it is necessary to formulate a "personalized" immunization procedure suitable for this field, and standardize the immune operation so as not to miss immunity. Where there are conditions, the pathogenic antibody should be detected in time, the immune effect should be evaluated, and the immunization procedure should be constantly revised and improved.

Ten, 50 and 90 days old

Cause: piglet dysentery (pig blood dysentery)

Incidence: porcine dysentery (porcine blood dysentery) is a serious intestinal infectious disease caused by Treponema pullorum, which is characterized by acute hemorrhagic dysentery, subacute and chronic mucinous dysentery. Although pigs of all ages and breeds can be infected, it mainly affects 50-90-day-old pigs.

The most acute type often dies within hours without seeing any symptoms. Acute cases began to discharge yellow to gray soft feces, eating less, body temperature rose to 40,40.5 ℃, with the development of the disease, continue to discharge feces containing a lot of mucus or blood, back arch, abdominal hanging, dehydration, like drinking, emaciation, weakness, ataxia. The symptoms of subacute and chronic cases are mild, characterized by repeated dysentery, excretion of gray-white thin feces with mucus from time to time, anemia, emaciation, stagnation of growth and development and become stiff pigs.

Countermeasures: 0.5% dysentery net solution can be injected intramuscularly at 0.5 ml per kg body weight, or erythromycin at 1 mg / kg body weight, twice a day for 2 to 3 days. Rehydration and cardiotonic therapy were carried out at the same time.

Eleven, 60, 120 days old

Cause: piglet paratyphoid fever

Incidence: piglet paratyphoid fever, also known as porcine salmonellosis, is an infectious disease caused by salmonella infection. Acute is septicemia and chronic necrotizing enteritis is common in clinic. The disease often occurs in piglets under 180 days old, especially 60-120-day-old piglets. Although the four seasons can occur, but mostly in wet rain, cold and alternating seasons. Diseased pigs have elevated body temperature and periodic dysentery, and their feces are yellowish, yellowish brown or green, malodorous, sometimes mixed with blood and pseudomembrane, some sick pigs also show cough, and individual skin rashes appear.

Countermeasures: for piglets over 30 days old, intramuscular injection of 1 ml of paratyphoid attenuated virus freeze-dried vaccine of piglets can achieve a better preventive effect. The diseased pigs were treated with enrofloxacin and gentamicin with satisfactory therapeutic effect. (source: Chinese farming)