Campylobacteriosis
This poultry disease is known as vibrio hepatitis, and focal necrosis of one of the liver lobes of a three-month-old chicken was isolated.
Treatment:
Definitive treatment is not recommended for patients. Erythromycin and enrofloxacin have also been used
Aspergillus in ostriches
Straw or dry fodder impregnated with fungus, which is used as a substrate, or dried hay containing fungus that ostriches feed on, is an important source of Aspergillus in newborn chickens and growing ostriches.
In most cases of Aspergillus in ostriches, the lungs are involved, which causes severe granulomatous lesions. Of course, swelling and severe fungal infection of the air sacs occur in ostriches that have been affected by contaminated bedding or straw.
Diarrhea and enteritis caused by gram negatives
Types of Salmonella, E.coli, Pseudomonas aeruginosa are the main causes of the disease, and in Africa, one case of the disease has been reported by the above-mentioned factors with 11% deaths. The contamination causes infection in the liver with inflammation and small necrotic spots. In toxic septicemia caused by E. coli causes similar wounds in the liver of birds.
Salmonellosis
Different types of salmonella have been isolated from emu and ostrich. Salmonella Typhimurium is transmitted due to contamination of the environment, food and contact with rodents and birds that host it, as well as lack of sufficient immunity against the disease.
Clinical symptoms of the disease
If there is an increase in abnormal losses after hatching, there is a possibility of Salmonella infection, and these symptoms can be seen in young and adult birds in the form of loss of appetite, lethargy, diarrhea, or death without clinical manifestations.
The mortality of ostrich chicks in farms has become a very important issue over the years
which today is called hidden chicken syndrome (FCS).
The symptoms of FCS or hidden chicken syndrome are:
Reduction of water and feed consumption in chickens with severe diarrhea or constipation, inactivity of sick chickens even when the flock is running. After walking for a while, these chickens sit and close their eyes and make a trembling sound. These chickens spend a lot of time sitting
Mortality caused by this disease is very high and it affects almost the whole flock, and the chickens that survive this disease will be growth retarded and lag behind the rest of the flock.
Dissection signs:
The presence of greenish-brown liquid in the intestines, stomach and gallstones
Bleeding in the intestines and simply hyperemia of the intestines
The stomach is empty
In some autopsies, pieces of wood or other objects may be found in the stomach, which indicates stressful conditions. The shape of the heart has changed and the fat around it has decreased greatly, and in young chickens, the color of the liver and yolk sac has completely changed.
The most important diseases and causes of ostrich deaths in the last five years of Iran
The most common causes of ostrich chick losses in early ages and under one month of age are related to yolk sac infection, which usually causes losses from the first days to about one month of age.
Investigations conducted on infected samples in the last 5 years have shown that more than 50% of total bacilli infections and nearly 13% of salmonella infections and 37% of other infectious cases are included. In severe cases, contamination and suffering from angiitis and diarrhea in ostrich chicks under 3 months of age have resulted in 20-30% casualties, which again necessitates full compliance with health principles and strict health care and control of ostrich chicks, especially in It remembers the first months of life.
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