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Electronic Journal of Biotechnology ISSN: 0717-3458
  © 2013 by Universidad Católica de Valparaíso -- Chile
Vol. 16 No. 5, Issue of September 15, 2013

Fig. 3 Effect of animal feed on fly-load variation in Overo Colorado steers grazing in three pastures: brome, riegrass/white clover and E+ tall fescue. 3A = effect on high fly-load animals, 3B = effect on low fly-load animals. The effect of change of pasture on the population of H. irritans was measured every two weeks. Averages were compared by a nonparametric Friedman test and different letters indicate significant differences (P < 0.05).