Oral Newcastle disease vaccination trials in Ethiopia.

Abstract

Vaccination experiments were carried out in Ethiopia to study the efficacy of the NDV-I(2) vaccine against challenge with an Ethiopian velogenic strain of NDV. In experiment A, which comprised 300 broiler chicks, the efficacy of the ocular/drinking water application of the HB1/La Sota vaccine was compared with the ocular/drinking water and the feed… (More)
DOI: 10.1080/03079450094243

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