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Summary. Five previously reported New Zealand bovine enteroviruses are further characterised with regard to their hiophysical and serologieal properties. Characteristics studied included heat stabilit>. buoyant density, virus replication, plaque production and thin section electron microscopy. Serological tests indicated the isolates belonged to two different serogroups which showed only limited relationships with U.S. serotypes BES 1, 3 and 4. A correlation was noted between 2(a-hydroxybenzyl) benzimidazole sensitivity, heat stability and the serogroup of the isolates.

Extract The cause of scouring in young calves in New Zealand is usually attributed to nutritional problems, pathogenic Escherichia coli, Salmonella spp. or coccidiosis. This paper reports findings that indicate the presence in this country of a virus that has the potential to cause neonatal calf diarrhoea.