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VetMed Resource

Veterinary information to support practice, based on evidence and continuing education

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Foot and mouth disease virus. Type A. was rendered avirulent by 28 passages in day old chicks or 12 in embryonated eggs. These strains, were non-pathogenic, had good antigenicity and did not spread by contact. In field trials with the chick embryo strain immunity lasted at least eight months....

NóBrega, P.
Biologico, 1963, 29, pp 149-163

The author gives a description of bats of the genera Diphylla, Desmodus, and Diaemus. The bats live in hollow trees or holes in stones. They are nocturnal but, if disturbed, fly out in the day-time. Generally there is only one male bat in a colony. If the cattle are moved from the neighbourhood,...

Torres, S.
Revista do Departamento Nacional da Produccao Animal, 1934, 1, 5-6, pp 25-39