Show newcastle outbreaks continue to increase new outbreaks of newcastle disease the serious chicken ailment which had appeared in 21 states must be detected promptly it if further rapid spread is to 0 be checked the american foundation for animal I 1 health has urged farmers to be constantly on the alert for signs of nerve disorders in their flocks such as trembling throwing the head backward A or pulling the head down between the legs ruffled feathers 3 difficult breathing or a condition that looks like a cold may also be danger signs because this Is a virus disease and the symptoms may often be obscure the veterinarian generally has to resort to laboratory tests to be certain that the disease is present |