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Possible effect of association with cooperatives in the control of caprine arthritis-encephalitis in Rio de Janeiro, Brazil
  1. G. Martins, DVM, MSc and
  2. W. Lilenbaum, DVM, PhD
  1. Veterinary Bacteriology Laboratory, Universidade Federal Fluminense, Niterói/RJ, 24210-130, Brazil
  1. Correspondence to Dr Lilenbaum, e-mail: mipwalt{at}

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CAPRINE arthritis-encephalitis (CAE) is an important infectious disease that contributes to low productivity of goat herds in developing countries. Many factors, such as breed and production system, have been reported to interfere in its occurrence. Nevertheless, the effect of farmer association (cooperatives) in its control has never been investigated. Therefore, the goal of this study was to report a difference of caprine arthritis-encephalitis virus (CAEV) seroreactivity by agar gel immunodiffusion test (AGID) in associated versus non-associated farmers in the same region in Rio de Janeiro State, Brazil. A total of 562 blood samples were sampled from 28 goat herds. Animals were randomly selected from each herd. A total 79 of 562 (14.0 per cent) serum samples were reactive for CAEV. According to the serology, 80 per cent of the herds belonging to independent farmers presented at least one seroreactive animal, with a herd level average among those of 25.7 per cent (11.1 to 62.5 per cent; median 19.9 per cent) of seroreactivity. In contrast, 23.1 per cent of herds belonging to associated farmers presented seroreactivity, with a herd-level average of 31.5 per cent (23.5 to 43.8 per cent; median 27.3 per cent). Farms gathered in cooperatives generally have better technical resources, what may facilitate the control of infectious diseases as CAE. The authors suggest that there is an association between farmers belonging to cooperatives and CAEV infection.

Dairy goat breeding is an important economic activity worldwide, mainly in developing countries (Peterhans and others 2004, Bandeira and others 2009). Despite the large animal population, the productivity in developing countries remains low, and infectious diseases such as CAE are important contributors to this scenario (Lilenbaum and others 2007). CAE is a debilitating and progressive infection determined by a lentivirus belonging to …

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