Abstract
AbstractThe numbers of buffalo flies on individual animals in a herd containing 4 water buffalo, 4 Brahman, 4 Belmont Red (50% Zebu blood) and 3 Hereford Shorthorn steers were counted on 11 occasions during the 1976/7 wet summer season at Rockhampton, (23°S, 150°W). There were consistent differences in the numbers of buffalo flies found on individual animals within a herd. On average there were about 5 times as many flies on the most heavily infested individual as on the least heavily infested. These differences persisted throughout the summer months and at times of high and low fly burdens. The differences were not related to the proportion of Brahman blood of the individual. The numbers of buffalo flies on cattle and water buffalo were similar. In another experiment, during the 1979/80 wet season, the numbers of buffalo flies were counted on 10 occasions on individual animals within separate herds of Brahman, crossbred and 7/8 British cattle maintained in adjacent paddocks. Coat colour did not influence the numbers of buffalo flies on individuals within each herd. The Brahman herd carried about half as many flies as the crossbred herd and about one third as many flies as the British breed herd.
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