Infectious coryza in broiler and layer flocks of Balochistan
By: Ghulam Muhammad, Muhammad Kamran Taj, Ferhat Abbas, Zahoor Ahmed, Imran Taj, Ajaz-Ul-Haq, Sana Arif, Attiya Aslam, Mariam Bilal
Key Words: Balochistan, Regions, Coryza, Incidence, Layer, Broiler
Int. J. Biosci. 9(5), 148-155, November 2016.
The present study has been conducted to analyze prevalence of coryza in commercial poultry at different regions (Zhob, Quetta, Nasirabad, Dalbandin, Lasbella and Sibi) of Balochistan. The incidence of infectious coryza in Zhob, Quetta, Nasirabad, Dalbandin, Lasbella and Sibi was 34.9%, 38.0%, 33.9%, 35.0%, 39.9% and 34.8% respectively. Season wise distribution of infectious coryza was more in winter (12.9%) and less in summer (5.6%). Moreover the incidence in layer was recorded higher (20%) than broilers (15.9%). However the breed wise susceptibility to coryza in layer and broiler has been in distinguishable. The age wise disease in broiler increased from first to 8th week (0.98% to 9.98%). While in layer there has also been significant increase in the incidence (4.14% to 6.40%) from day old to culling age. The flock size wise disease incidence showed increased (7.79% to 10.77%) with increasing size of flock. The feed brand wise disease has been higher 8.32%, 8.19% and 7.94% with feed brands A, C and D respectively and comparatively low 6.14% and 5.66% using B and E feed brands. Farm building material wise incidence was relatively higher (39.9%) in bush made farms than mud made (35.0%) farms. There was no visible effect of humidity and altitude on incidence of coryza in any region of Balochistan. The study Elaborated various factors of prevalence of coryza. Identifies factors enhance the incidence of coryza in Balochistan.