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Salmonellosis (salmonellosis) is an infectious disease of birds, mainly young animals, characterized by diarrhea, conjunctivitis, septicemia, intestinal damage and exhaustion.
Etiology. The causative agents of the disease S. typhimurium, S. enteritidis, S. сholeraesuis, short gram-negative, motile, spores and capsules not forming sticks.
In the external environment, it retains its biological properties for 8-14 months, inactivated at 75 ° C for 30 minutes, when boiled - instantly.
Epizootology. Epizootics are more often observed among young animals (1-80 days old) of waterfowl and pigeons.
The meat and eggs of an adult bird are a source of foodborne toxicoinfections for humans.
The main source of the causative agent of the disease is the sick and sick bird, which excretes the pathogen with droppings, urine, and outflows from the beak. Infection occurs through the digestive tract, respiratory tract, conjunctiva and transovarially. Salmonellosis is characterized by stationarity.
Pathogenesis. The causative agent multiplies in the intestine. With a decrease in the resistance of the bird organism, it penetrates the bloodstream through the lymphogenous route and causes septicemia.
Symptoms and course. The incubation period lasts from several hours to 7 days. The disease proceeds lightning fast, acute, subacute and chronically. Acute salmonellosis occurs mainly in young animals. In sick birds, labored breathing, general weakness, drowsiness, and a decrease in appetite are noted. Nervous phenomena are characteristic - seizures of convulsions, during which the birds fall to the ground, topple over on their back, throw their head back (throwing disease). Then paralysis of the legs and wings appears. In the acute course of the disease, mortality reaches 70% -80%.
In a chronic course, diarrhea, swelling of the joints, paresis, and paralysis are observed. In young animals over 1.5 months of age, symptoms of lung damage are noted.
In the acute course of salmonellosis, changes reveal an enlargement of the liver with fibrinous overlays, necrotic nodules in the section, the gall bladder is full of bile. With subacute and chronic salmonellosis in the large intestine, point hemorrhages are detected, the spleen and kidneys are enlarged.
Diagnosis. When making a diagnosis, it is necessary to take into account epizootological data, clinical signs, pathoanatomical changes with the mandatory conduct of microbiological studies and the formulation of RA and CCRNG. The diagnosis is considered established when isolating cultures from the material with characteristic properties and determining the serotype; with positive RA with serum at dash 1: 100-1: 200, taking into account clinical and epizootological data.
Salmonellosis must be differentiated from Escherichiosis, infectious sinusitis, infectious hepatitis, eimeriosis, pasteurellosis.
Treatment. Recently, nitrofuran drugs and antibiotics have been successfully used for treatment.
As a specific agent, polyvalent antitoxic hyperimmune serum against escherichiosis and salmonellosis in a dose of 0.5-3 ml is used.
Prevention and control measures. For active immunization of waterfowl, a dry live vaccine against waterfowl salmonellosis is used. When establishing a diagnosis on the farm, restrictions are introduced.
The sick bird is isolated and treated. Hyperimmune serum is administered to the rest of the bird at a dose of 0.25-1 ml. After 5-7 days, ducklings are vaccinated twice with an interval of 3-5 days with a dry live vaccine against salmonellosis of waterfowl.
Restrictions are removed 1 month after the last case of a disease or mortality of birds.
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Salmonellosis of birds (Latin, English - Salmonellosis; paratyphoid, infectious diarrhea of birds) is a disease characterized by an acute course of septicemia in young animals and latent infection in an adult bird. Historical background, distribution, hazard and damage. Salmonella is widespread. Salmonella was first isolated from pig organs by American veterinarians Salmon and Smith in 1885.
Salmonellosis (lat., Eng. - Salmonellosis; paratyphoid) - a large group of zoonotic diseases mainly of farm animals, characterized in young animals in the acute course of fever, septicemia, toxicosis and diarrhea, and in subacute and chronic - pneumonia and arthritis; in adult females, by abortion; in humans, it proceeds in the form of foodborne toxicoinfections (see color insert).
- SALMONELLOSIS AND THEIR PREVENTION
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- SALMONELLOSIS (SALMONELLOSIS)
Salmonellosis is an acute contagious disease that affects mainly puppies of weaned age. Etiology. The genus Salmonella includes 65 groups and is widespread in nature. Salmonella parasitizes in the body of domestic as well as wild animals, including birds, fish, reptiles. Many species are highly pathogenic and dangerous to humans. In dogs, Salm is more often excreted. cholerae suis, S.
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Salmonellosis (salmonellosis) - an infectious disease of young animals, characterized by a violation of the digestive tract, the development of toxemia, sepsis, sometimes metritis and abortion. Etiology. The causative agent of the disease is a gram-negative movable rod with rounded ends, does not form spores and capsules, is relatively stable in the external environment. Disease in small animals
Salmonellosis (salmonellosis) is an infectious disease of young farm animals and fur animals, characterized by acute fever and enteritis, and chronic - pneumonia and joint damage. Etiology. The causative agent in piglets is S. cholerae suis and its variants; in calves, S. dublin, less commonly S. typhimurium and S. enteritidis; in lambs, S. abortus ovis; in foals
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- Salmonellosis and other acute intestinal diarrheal infections
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- Salmonellosis of ostriches
Salmonellosis is an infectious disease characterized by septicemia, fibrinous diphtheria of the intestine. Etiology. In ostriches, Salmonella enteridis is most often isolated. These are short gram-negative movable sticks with rounded ends. They do not form spores and capsules; they are cultivated under aerobic and anaerobic conditions. Epizootological data. The main source of pathogen
These are intestinal diseases caused by bacteria of the Salmonella genus (with the exception of Salmonella, which causes typhoid fever and paratyphoid fever), with severe symptoms of intoxication. These microorganisms are stable in the environment, tolerate low temperatures, survive in water and household items at room temperature for up to 45-90 days. In salted meat - 2-3 months, in milk - 2-40 days. At
Salmonellosis is an acute infectious disease of humans and animals caused by Salmonella serovars and occurs in children more often in the form of gastrointestinal, less often typhoid-like and septic forms. Etiology. Salmonella are motile gram-negative bacteria that do not have capsules and do not form spores. The main antigens of Salmonella are flagellates (H), antigens of the cell wall (O) and
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Salmonellosis is an infectious disease of bee families, accompanied by the death of adult bees. Etiology. Pathogen - Sal. typhi murium, Sal. cholerae suis, etc. It is gram-negative, motile (except Sal. Pullorum gallinarum), spore and capsules not forming a stick. Optional aerob, size 2-4 x 0.3-0.5 microns. It is well stained with all aniline dyes. Epizootology. Disease
- FOOD SALMONELLOSIS
Salmonellosis is an infectious disease of mammals and birds, proceeding very diverse, but most often in the form of typical toxicoinfections. The main transmission routes are food, less often - contact. HISTORICAL REFERENCE. In 1885, American microbiologists Salmon and Smith isolated a bacterial culture from the meat of diseased pigs, which later became a large group of microorganisms called