Natural resistance to Marek's disease at hatching in chickens lacking maternal antibody, and relationship between this early resistance and resistance acquired with age.

Abstract

Chickens of lines 6 and N, selected for resistance to Marek's disease (MD) and lacking maternal antibody, were resistant to MD mortality when exposed to pathogenic MD virus (MDV) at 1 day old. This finding indicated that natural resistance to MD is well developed at hatching in certain lines and is not dependent upon increasing age. Evidence obtained for… (More)

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