Dr. Shahr Ayani:
I have to tell my friends who are facing nervous symptoms in chickens that some factors may cause nervous symptoms:
1. Neuropathic effects (destruction of nerve tissue) caused by the toxin (Zarabah) of bacteria that cause enterotoxemia.
2. Neuropathic effects caused by the neurotropic form of Newcastle disease virus
3. Some parasitic infections
4. Poisoning with some chemicals such as pesticides
5. Deficiency of some microelements (micronutrients) in the diet, such as some vitamins, amino acids, minerals, etc.
In the meantime, based on my observations, the first item is the most common cause of death of ostrich chicks above
20 days in Iran
Unfortunately, due to the common neurological symptoms with Newcastle disease and the fact that local veterinarians in the field of poultry have a lot of encounters with Newcastle disease in industrial poultry and pigeons, they usually diagnose Newcastle disease as soon as they encounter these symptoms in ostriches, while the other symptoms in He also examined the carcass
Of course, it should be noted that a bird that suffers from a chronic infection and partial to complete failure of the digestive system will definitely suffer from immunosuppression and if it is exposed to amounts of Newcastle virus, it will also suffer from a viral infection. An event that usually happens rarely in a healthy bird)
Therefore, if you send a blood sample to the laboratory, the Newcastle titer of this chicken will be positive
While the main problem of this flock was not and is not Newcastle, therefore, Newcastle vaccination and related supportive treatments will not have much effect on changing the condition and recovery of the bird.
Dr. Shahraini
This post is written by majid2828