Quarterly Pathology V: Asian | Veterinaria Digital

Quarterly Pathology V: Asian

17/01/2011 Birds Layers Broilers

During last few months, there have been detected respiratory and digestive processes which affect the productivity of the avian exploitations. Climatic conditions have been extreme so the use of ventilation and correction of the energy levels of food have been inappropriate in many cases.

1. Infectious Bronchitis: Especially in areas passed by migratory birds, towards the south, coming from the Steppes in Central and Northern Asia. There have been demonstrated renal, bronchial and salpingitis injuries in vaccinated animals without increasing the mortality but with important retardation in growth.

 

2. Chronicle Respiratory Disease: The former pathology, together with the mycoplasmosis and the inappropriate conditions of ventilation in farms, due to the severe cold outdoor, has let the development of Chronicle Respiratory Diseases (CRD).

 

3. Syndrome Sinusitis – Tracheitis - Tendinitis: In some cases, there have been observed the phase of sinusitis-tracheitis with petechiae at level of infraorbital sines and the upper trachea. Despite of not having observed it directly, we have been informed about their presence, in animals over 40 days old (prolonged breeding due to retardations in growth),of purulent injuries in lower joints of the legs.

 

4. Digestive Mycotoxicosis: Especially mycotoxicosis by trichotecenes originated by the growth of Fusarium in cereal. The secretion of mycotoxins of Fusarium has been favoured by low temperatures and the big oscillation between temperatures during night and day. The found injuries correspond to a loss of digestive mucosa with regurgitation of bile.

 

5. Digestive Mycosis: As in the previous section, the presence of Fusarium in cereal has caused injuries at level of the cornea layer of the gizzard with ulcers outside and the presence of white mycelial mass in the submucosa.

 

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