Etude sérologique sur la brucellose bovine aux abattoirs de Dakar

Abstract

Une enquête réalisée sur les bovins conduits aux abattoirs de Dakar de novembre 1974 à juin 1975 en utilisant simultanément la S. A. W., la réaction de COOMBS et la F. C'. permet aux auteurs de préciser les résultats obtenus au cours d'un sondage préliminaire (mai à août 1974). L'analyse des résultats recueillis dans ces deux études portant sur un ensemble de 1 134 sérums, autorise à avancer un pourcentage d'infection de 8,7 p. 100, pour un seuil d'interprétation de 60 UI/ml en agglutination, qui passe à 17,2 p. 100, pour 30 UI/ml. L'infection apparaît plus fréquente chez les femelles que chez les mâles et présente une incidence maximale chez les sujets de 7 à 9 ans suivant en cela l'âge moyen des sujets abattus.

Bovine Brucellosis Seroprevalence and Potential Transmission Risk to Workers at the Port-Bouët Abattoir, Abidjan, Côte d'Ivoire

“…The apparent prevalence of bovine brucellosis was higher in females (1.85%) than in males (0.3%). This finding is similar to that of Chantal and Thomas [14], Kubafor, et al [31], Traoré, et al [10], Faye, et al [32] and Amona, et al [24]. This trend of seroprevalence with sex can be explained by the fact that females are often kept for longer periods for production activities such as milk, reproduction, etc, thus they are much more exposed to infections than their male counterparts.…”

“…The apparent prevalence of bovine brucellosis obtained in this study was superior to that obtained by Kouamé, et al [26] in abattoirs in Senegal but lower than 9.6% at the Dschang abattoir in the west region of Cameroon [27] and 8.7%-12% at the Dakar abattaoir in Senegal [14]. These results are significantly lower than those previously reported in farms throughout the Ivorian territory by Angba, et al [28] and Pilo-Moron, et al [29] whose prevalences were within the range of 12-14% and 10.8% respectively.…”

“…where N = sample size, Pexp = expected prevalence, and d = absolute precision [13] From the above formula, the estimated sample number was 384, but sampling was conducted on 387 cattle. Blood of these animals was collected via the jugular vein into collection tubes [14]. The blood collection tubes were immediately placed in a cooler and sent to the Bingerville Central Veterinary Laboratory (LCVB) where the sera were prepared and stored frozen (-20 ° C) prior to serological analyzes.…”

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“…The apparent prevalence of bovine brucellosis obtained in this study was superior to that obtained by Kouamé, et al [26] in abattoirs in Senegal but lower than 9.6% at the Dschang abattoir in the west region of Cameroon [27] and 8.7%-12% at the Dakar abattaoir in Senegal [14]. These results are significantly lower than those previously reported in farms throughout the Ivorian territory by Angba, et al [28] and Pilo-Moron, et al [29] whose prevalences were within the range of 12-14% and 10.8% respectively.…”

“…where N = sample size, Pexp = expected prevalence, and d = absolute precision [13] From the above formula, the estimated sample number was 384, but sampling was conducted on 387 cattle. Blood of these animals was collected via the jugular vein into collection tubes [14]. The blood collection tubes were immediately placed in a cooler and sent to the Bingerville Central Veterinary Laboratory (LCVB) where the sera were prepared and stored frozen (-20 ° C) prior to serological analyzes.…”