Diagnosis and treatment of Porcine dysentery (Ⅱ)
4 laboratory inspection
4.1 No bacteria were found in the smears of heart, blood, liver and spleen of dead pigs, Gram staining and Wright's staining.
4.2 the mucus and bloody feces of acute diseased pigs were taken and the same amount of normal saline was added to make suspension. When the suspension was examined by dark field microscope, 3-5 spirochetes with consistent shape, sharp ends and serpentine activity could be seen in multiple visual fields.
5 Prevention and treatment
5.1 the whole herd pigs were fed with dysentery net (3-methyl-2-acetyl-quinoline-1, 4-dioxides) and 50g dysentery per 10kg feed for 3 days as a course of treatment.
5.2 the infected pigs were intramuscularly injected with 0.5% dysentery according to the body weight of 5mg/kg, twice a day for 3 days; the feed was added with compound vitamin B powder, the weak were intramuscularly injected with vitamin K3 and vitamin B12, and those with severe dysentery were given intraperitoneal fluid replacement with grape grain normal saline, and intramuscular injection of epinephrine for symptomatic treatment.
5.3 isolate sick pigs and strengthen feeding and management, pay attention to cold protection, good hygiene, and strictly implement the single feeding system of all in and all out, so as to prevent the epidemic from spreading to breeding and nursing pig areas.
5.4 formulate a rodent control plan and concentrate on harmless treatment of feces. After using the above measures, the disease was quickly controlled, and on the 3rd day after treatment, 67 seriously sick pigs gradually returned to normal except 2 died.
6 summary and experience
6.1 according to the incidence, clinical symptoms, pathological changes of autopsy, laboratory examination and treatment observation, it was diagnosed as porcine dysentery caused by Treponema suis. / p >
6.2 the outbreak of dysentery in growing and finishing pigs in this pig farm is mainly caused by the usual work focusing on breeding pigs and breast-feeding pigs, neglecting the management of growing and finishing pigs with bacteria, coupled with sudden climate change, cold protection and poor feeding and management.
6.3 for diseased pig farms, the control and purification measures of swine dysentery should be formulated immediately, with emphasis on strengthening drug prevention, feeding management and rodent control in order to achieve obvious results.
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Diseases that can easily cause high fever in pigs and their prevention and treatment
(1) Classical swine fever: pig body temperature rises to 40-42 ℃, lasting; loss of appetite or fasting, mental depression, chills, lying like sleeping, squeezing in a pile or drilling grass nest; standing and walking, arch back bending, limb weakness, slow movement, rocking instability, conjunctival redness, purulent secretions, constipation first, and then diarrhea; ear root, abdomen, the inside of limbs and other places have finger pressure colorfast fuchsia bleeding spots. Lesions: enlarged lymph nodes, peripheral bleeding, marble red and white; lighter kidney, needle-sized bleeding spots on the surface; splenomegaly
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Immunization methods for various diseases of pigs
1. Rotavirus infection immunity method 1. Attenuated vaccine. The attenuated strain of swine origin, developed in China, was attenuated by cell passage, and the diarrhea incidence of piglets born by immunized sows could be reduced by more than 60%. 2. Fire fighting vaccine. Developed in China, the vaccine immunizes piglets with a protection rate of more than 90 percent. Second, vesicular disease immunization methods developed in China, including attenuated live vaccine and inactivated vaccine. In recent years, inactivated vaccines have been mainly promoted and applied. 1. Live attenuated vaccine. swine vesicular disease
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