Clinical aspects and dynamics of auricular parasitosis in Gir cattle

Pesquisa Veterinária Brasileira

Patrícia V.b. Leite²  Luiza B. Leite²  Arildo P. Da Cunha²  Marcos X. Silva²  Ana Cristina P.p. Bello²  Luísa N. Domingues²  Antônio Leite Jr¹  Romário C. Leite² 

[1] ,Universidade Federal de Minas Gerais Escola de Veterinária Laboratório de Doenças ParasitáriasBelo Horizonte MG ,Brazil

关键词: Cattle;    parasitic otitis;    Rhabditis spp.;    Raillietia spp;    Bovinos;    otite parasitária;    Rhabditis spp.;    Raillietia spp;   

DOI  :  10.1590/S0100-736X2013000300008

来源: SciELO

【 摘 要 】

We evaluated the dynamics of ear infestations caused by Rhabditis spp. and Raillietia spp., which were correlated with animal age, intensity of clinical signs and climate factors. Sixty-four Gir cattle were distributed into three groups: GA - 23 calves with 4 to 6 months of age; GB - 18 calves with 7 to 12 months of age; and GC - 23 heifers with 13 to 33 months of age. Five samplings, defined as S1, S2, S3, S4 and S5 were performed every three months from August 2008 to August 2009. The ear secretion was collected using the auricular washing method for the right ear and a swab for the left ear. A clinical assessment of the animals was performed, and they were classified according to the presence and severity of otitis. The highest relative frequency of rhabditosis was 52.2% in GC at the last sampling. In the first sampling, 42.2% of the animals were infested by Raillietia spp. The older cattle were more susceptible to infestations by both parasites. No correlation of Rhabditis spp. and Raillietia spp. parasitism with climate factors was found. The results showed that both parasites could infest Gir cattle, and in most cases, there was no co-infestation. Only older animals parasitized by the nematode showed clinical signs of the disease.

【 授权许可】

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