Clinical signs of brooder pneumonia depend on some factors such as weather condition, litter condition, types of infection and organism involved in the causing brooder pneumonia.
Some veterinarians inspect clinical signs and confirm brooder pneumonia without performing a necropsy. There some clinical signs are given below-
Simply when physiological functions are decreased in the human and animal body. In the brooder pneumonia, poultry species became depressed slowly not further like viruses and bacteria.
Clinical developed depression depends on the formation of a nodule in the organs of the poultry in brooder pneumonia. Therefore, the formation of nodules is the slow- making process in the brooder pneumonia.
developing nodules affect all types of physiological functions in brooder pneumonia. It is affected by the respiratory system, digestive system, urinary system and lymphatic system of poultry brooder pneumonia.
The common depressive condition may understand by following way-
Birds are unable interests to do anything like running, sporting, isolated from other birds.
Sleeping disturbances including insomnia but oppositely, to much sleeping dropping head on the litter in brooder pneumonia.
It is the common medical terms in the disease field. It is specifically lack of concentration to any activities in the flocks.
Standing dull syndrome intensely has been seen in the brooder pneumonia. Developing nodules always a pain for the birds in brooder pneumonia infection.
Route of transmission of spores of A.aspergillus by the respiratory tract. That why primary multiplication sites of infection triggered in the respiratory tract of poultry in the brooder pneumonia infection.
From mouth to lung, infection is a widespread encounter in the respiratory systems of the poultry. The main difficulty arises in the lung & air sac in the brooder pneumonia.
Dyspnea due to the overweight of the airspace because of the modular structure already from by A.fumigatus infection.
Open Mouth Breathing
Like another respiratory virus like Newcastle diseases, Avian Influenza virus, Infectious bronchitis, Infectious laryngotracheitis which are involved in the respiratory system causing open mouth breathing during that viral infections.
Similarly, brooder pneumonia-causing open mouth breathing as well. But, one difference from brooder pneumonia is the absence of fever.
Severe open mouth breathing has been observed due to nodular occasion of trachea and lung tissue.
Some times blockage of lower airways because of nodule formation in the mouth, air sac, lung, and larynx.
Beside, visceral organs such as intestine, and kidney contains an excessive number of nodule thus leading to intense pain and increasing open mouth respiration.
It is the most economical disease because it concurrently affects all chicks from an early age.
The acute form of disease is caused huge mortality, besides, chronic form always suppressed the growth rate as well as increased FCR rate in the brooder pneumonia.
From the infection of A.fumigatus, birds are always intaken less amount of feed but in severe infection, birds became dying off or stopped the feed consumption.
Such birds are survived from the brooder pneumonia, they would not reach to target weight As well.
That is why, some veterinarians suggest that, culled all the birds if the infection uncontrolled condition.
But in some cases, birds are profusely hurdled in the flock.
Probably, birds are getting hypothermia due to less feed intake which responsible for producing energy in the body became stopped.