The effect of different Newcastle disease live vaccines and vaccination schedules on the immune response and performance of broiler chickens serologically positive to mycoplasmas.
Amer, M. M., and W. A. A. El-Ghany,
"The effect of different Newcastle disease live vaccines and vaccination schedules on the immune response and performance of broiler chickens serologically positive to mycoplasmas.",
Beni-Suef Veterinary Medical Journal, vol. 16, issue 1, pp. 18-26., 2006.