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This research is part of a research project which has obtained full approval from the Animal Research Ethics Committee (AREC) of the University of KwaZulu-Natal, Durban; Reference: AREC\/041\/019D. Additionally, the authors have permission in terms of section 20 of the Animal Diseases Act, 1984 (Act No. 35 of 1984) from the Department of Agriculture, Land Reform and Rural Development (DALRRD), South Africa; Reference: 12\/11\/1\/5\/4 (1425).","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}}]}}