Natural infestation of beef catle females by external parasites in southern Brazil.

• Autor(a) principal: SILVA, Ana Mary da.
• Data de Publicação: 2006
• Outros Autores: ALENCAR, Mauricio Mello de., REGITANO, Luciana Correia de Almeida., OLIVEIRA, Márcia Cristina de Sena., BARONI, Waldomiro.
• Tipo de documento: Artigo de conferência
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UFCG
• Texto Completo: http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/36092
• topic: Parasitologia animal; Resistência a parasitas - gado; Gado de corte; Mosca-de-chifre; Beef-worm; Verme bovino; Boophilus microplus; Haematobia irritans; Dermatobia hominis; Animal parasitology; Parasite resistance - cattle; Beef cattle; Horn fly; Bovine worm; Zootecnia.; Ciência Animal.

Due to losses caused by external parasites to cattle industry, chemical-control methods applied used, and when used without discrimination they can result in high costs, residues in beef and milk, and quick development of resistance to the active principle (Fraga et al., 2003). However, studies (Utech et al., 1978; Oliveira and Alencar, 1990; Teodoro et al., 1994; Silva et al., 2005) have shown breed or genetic group differences in parasite resistance, suggesting that crossbreeding can be used for their control. The objective of this study was to evaluate the degree of natural infestation of beef cattle females of different genetic groups to tick (Boophilus microplus), horn fly (Haematobia irritans) and beef- worm (Dermatobia hominis).