Botulism and Carnivore Plague
Botulism is an acute feed toxicosis of animals and humans, manifested in the form of paralysis of the pharynx, tongue, lower jaw, a sharp weakening of the skeletal muscle tone and an upset gastrointestinal tract.
The causative agent of the disease is the spore-forming anaerobic microbe Clostridium botulinum. Of the seven available types of pathogen, the most virulent are Type A and C. Spores are located subterminally and give the microbe the appearance of a tennis racket. Spores are highly stable in the external environment.
Most often, botulism affects minks, ferrets, and, less commonly, arctic foxes, foxes, dogs, and cats, regardless of age. The natural habitat of the causative agent of botulism is the gastrointestinal tract of cattle and some species of carnivores, from where it enters the external environment with feces, where the spores continue to retain their biological properties for a long time. The causative agent transmission factors are inferior, poor-quality feed, especially the meat of dead animals, the carcasses of which have lain for several hours unbroken; the corpses of small rodents where the accumulation of toxins occurred; infected meat and fish products.
Infection occurs when the infected feed is eaten raw. Botulism can occur at any time of the year. Enzootia lasts from 3 to 5 days. Mortality can be 70–95%.
The incubation period of botulism lasts from 8-10 to 24 hours, less often up to 2-3 days. The disease, as a rule, proceeds over-construction, less often acutely, which is determined by the amount of toxin received in the body.
Sick dogs refuse to feed, sluggish, experiencing increased thirst, normal body temperature. The bowel movement is frequent, feces are semi-liquid, fetid, sometimes contain pieces of undigested food, as well as bloody mucus. The disease develops intensively, frequent vomiting appears. In the future, hind limb paralysis may develop, neck muscles become relaxed, animals can hardly move, a shaky gait is noted. By the end of the disease, pulse and breathing become more frequent, urination and defecation slow down, peristalsis becomes weakened. Botulism in foxes and foxes is manifested by depression, impaired coordination of movement, paralysis of the hind limbs, abdominal breathing, and sometimes vomiting.
It is not possible to provide medical assistance in view of the super-acute and acute course of the disease.
In the event of botulism, suspicious meat and fish food is excluded from the diet of animals or they are fed after careful heat treatment. Similarly, with vegetable feed, subjected to self-heating and mold. Particular attention must be paid to the quality of the feed after the puppies are deposited and in the first days after vaccination.
Carnivore plague (infectious catarrhal fever) is an acute viral disease characterized by fever, catarrh of the mucous membranes, pneumonia, skin exanthema and damage to the nervous system
The causative agent of the disease is the RNA genomic virus, has immunosuppressive properties.
The plague virus is susceptible: the family of canids (dogs, raccoons, wolves, foxes), the family of marten (mink, sable) and other carnivorous animals. Animals of all ages are sick, but puppies of 2–5 months of age are most susceptible.
The source of infection is sick and ill animals, as well as animals in the incubation period. Virus carriage lasts 2-3 months in dogs, in fur animals – up to 6 months. The causative agent is excreted from the body with outflows from the nose and eyes, with coughing, sneezing, with saliva, urine and feces.
The incubation period is 2-14 days. The course is acute, acute, subacute, chronic, but it can be atypical and abortive. Depending on the symptoms, the nervous, pulmonary, intestinal, mixed and skin forms of the disease are distinguished.
In the acute course, it is accompanied by an increase in body temperature to 39.5 ° C, which is maintained at that level for 10-15 days. The skin of the nose mirror is dry, cracks may appear. 1-2 days after the temperature rises, serous-mucous and then purulent outflows from the eyes appear, as a result of which the eyelids stick together, the eyes close. Rhinitis develops, and serous-purulent exudate is released from the nasal cavities, crusts form on the nasal speculum, the nostrils stick together, breathing becomes sniff, first a dry and then a wet cough appears.
It is accompanied by the development of catarrh of the mucous membrane of the stomach and intestines, and is manifested by diarrhea. Feces are liquid, gray-yellow, and later brown. With hemorrhagic inflammation of the rectum, traces of blood are found in feces. In addition, there may be vomiting.
With the nervous form of the plague, animals experience excitement, convulsive contraction of the masticatory muscles and extremities, there may be paresis and paralysis of the hind limbs, epileptic seizures, and clonic and tetanic convulsions appear.