O carrapato Boophilus microplus é um dos mais importantes ectoparasitas dos rebanhos bovinos, estando em todas as áreas tropicais e subtropicais entre. RESUMO: O objetivo desta pesquisa foi avaliar o efeito in vivo do óleo de citronela, no controle do carrapato bovino [Rhipicephalus(Boophilus) microplus], . 2 jun. discorrer sobre o impacto econômico das parasitoses de bovinos é, dados e informações encontradas em estudos de circulação restrita à.

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Natural infestation by external parasites in beef cattle females in southern Brazil. Foram feitas de 6 a 10 contagens em cada animal, totalizando 5. It was evaluated in this work, the degree of natural infestation by external parasites in beef cattle females from three genetic groups. It was realized from 6 to 10 countings in each animal, totalizing 5, observations in females at seven physiological stages calf; empty heifers, pregnant heifers, primiparous cows with or without calf; and pluriparous cows, with or without calf.

Differences among genetic groups depended on year-season counting; however, in general, Nellore females were the least infected by ticks, and Angus x Nellore females were the most infected by horn flies and by beef-worms. There was a physiological stage effect of the female in all the three studied characteristics and the differences changed accordingly to the trait. Despite of the counting year-season x genetic group, there are differences among Nellore, Canchim x Nelore, Angus x Nellore and Simmental x Nelore genetic groups regarded to the degree of natural infestation by cattle tick, horn fly and beef-worm.


Esses resultados concordam com aqueles obtidos por Fraga et al. Riek e Willadsen et al. Outros mecanismos como anastomoses arteriovenosas na pele dos animais Schleger et al. Genetic and environmental aspects of the resistance of Zebu cattle to the tick Boophilus microplus. Genetics analysis of the infestation of females of Caracu cattle breed by Horn Fly Haematobia irritans L diptera, Muscidae.

Genetics and Molecular Biologyv.

O manejo integrado de mosca dos chifres, berne e carrapato em gado de corte. The ectoparasiats of host resistance on larval attachments and growth. Comparative performance of six Holstein-Friesian x Guzera grades in Brazil. Burdens of Boophilus microplus under field conditions. Animal Productionv.

A comparative study of lesions caused by different parasitic stages of Boophilus microplus Canestrini in the skins of naturally infested taurine and zebuine hosts. The correlation of ticks resistance with mast cell counts in the host’s skin. Brazilian Journal of Veterinary and Animal Sciencesv.

Natural infestation by external parasites in beef cattle females in southern Brazil

International Journal Bovinsov,29, p. Studies on the reaction of animals to infestation with tick. VI Resistance of cattle to infestation with the tick Boophilus microplus Canestrini. Australian Journal of Agricultural Researchv. Controle do carrapato Boophilus microplus Acari: Arteriovenous anatomosis in the dermal vasculature of the skin of Bos taurus cattle, and their relationship with resistance to the tick Boophilus microplus.


Australian Journal of Biological Sciencev. Artificial infestation of Boophilus microplus in beef cattle heifers of four genetic groups. Genetics and Molecular Biology, v. Revista Fm de Zootecniav. Brahman breeding as a factor affecting the attractiveness or repellency of cattle to the horn fly.

Journal of Economic Entomologyv.

ectoparasitas em bovinos pdf

Breed-associated resistance to tick infestation in Bos indicus and their crosses with Bos taurus. Veterinary Parasitologyv. Response of cattle to allergens from Boophilus microplus.

Institute Journal Parasitologyv. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. Services on Demand Journal. How to cite this article.