Immunomodulatory Effect of New Castle Disease Virus on Inactivated Mycoplasma gallisepticum Vaccine Response in Broilers
Immunomodulatory Effect of New Castle Disease Virus on Inactivated Mycoplasma gallisepticum Vaccine Response in Broilers
Rabia Riaz1, Khushi Muhammad1*, Masood Rabbani1, Muhammad Amjad Iqbal2, Aamir Riaz Khan2, Sadia Sarfaraz1, Mudassar Naseer3 and Khalid Majeed1
ABSTRACT
In Pakistan the poultry sector is an important and vibrant segment of agriculture in Pakistan with a significant contribution to the national GDP (1.3%). Mycoplasma gallisepticum (MG) causes avian mycoplasmosis and is only controlled through mass vaccination. Antibody response of birds to inactivated MG vaccine is poor. On 7th day of age (broilers: n=40) each bird of group A, B, C and D (n=8) was vaccinated (subcutaneous: 0.3ml) with G-MG, O-MG, G-MG+NDV (New castle Disease Virus) and O-MG vaccines, respectively. Serum samples were collected on 21, 28 and 35 days post vaccination for anti-MG-ELISA antibody titer. Cumulative mean anti-MG-ELISA antibody titer of birds to G-MG, O-MG, G-MG+NDV, O-MG+NDV and control was 80.30, 137.49, 91.59, 169.76 and 0.15 units respectively on 35 days post-vaccination. It is concluded that NDV has insignificant immunomodulatory effect on antibody response of birds to the MG vaccine.
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April 2021
Vol. 53, Iss. 2, Pages 401-800
