Oluwayinka, E. B.; Oni, O. O.; Biobaku, N. A.; Kadri, O. Y.; Omoshaba, E. O.; Adewole, O. A.; Oluwayinka, O. G. Persistence of Passive Immunity Against Some Important Viral Diseases and Feed Conversion in Chickens Fed Diet Supplemented With Probiotic. NJAP 2020, 47, 83-91.