Prevalencia de Cysticercus bovis según sexo, categoría y nivel de infección en ganado faenado en el sur de Chile
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J. Selva Andina Res. Soc.
Abstract
El objetivo de esta investigación fue determinar la prevalencia de Cysticercus bovis en los bovinos faenados en el sur de Chile. Para determinar la prevalencia de cisticercosis se utilizaron los antecedentes de 198260 bovinos faenados en tres grandes plantas faenadoras de carnes (PFCs) en el sur de Chile, de enero a diciembre del 2010, que fueron inspeccionados post mortem de acuerdo a los procedimientos oficiales de Chile en los distintos puntos obligatorios: corazón, lengua, maseteros, esófago, diafragma y observación superficial de la canal. Un total de 1158 (0,58%) bovinos fueron diagnosticados positivos a C. bovis. De los casos positivos, el 98.45% estaba infectado en forma leve (hasta 4 cisticercos) y estas canales fueron destinadas a saneamiento; sólo un 1.55% de los casos positivos correspondieron a infección masiva (más de 4 cisticercos), destinadas a decomiso total de acuerdo a los procedimientos oficiales de Chile. La prevalencia de C. bovis según clase fue más frecuente en los bueyes, vacas y toros, es decir en bovinos de mayor edad. En hembras la infección fue más prevalente que en machos. Se observó la ocurrencia de la cisticercosis en todos los meses del año. En conclusión la prevalencia de la cisticercosis varía entre PFCs según sexo, clase y nivel de infección.
The purpose of this study was to determine the prevalence of Cysticercus bovis in cattles laughtered in southern Chile. Data from 198260 bovines slaughtered in three large slaughter plants(PFCs) in southern Chile, from January to December 2010 were used. The animals were inspected post mortem according to official procedures in Chile, where mandatory inspection sites are: heart, tongue, masseter, oesophagus, diaphragm and superficial observation of the carcass. A total of 1158 (0.58%) animals were diagnosed positiveto C.bovis. Of the positive cases 98.45% were infected with the slight form (up to 4 cysts); the carcasses of these bovines were sent to sanitation before being used for human consumption. Only 1.55% of the positive cases corresponded to amassive infection (more than 4 cysts); these carcasses were condemned and not suitable for human consumption according to the official inspection procedure in Chile. The prevalence of C.bovis was higher in oxen and cows, hence higher in older cattle. In females the infection was more prevalent than in males. The occurrence of cysticercosis was observed in all months of the year. In conclusion, the prevalence of cysticercosis PFCs varied according to gender, class and level of infection.
The purpose of this study was to determine the prevalence of Cysticercus bovis in cattles laughtered in southern Chile. Data from 198260 bovines slaughtered in three large slaughter plants(PFCs) in southern Chile, from January to December 2010 were used. The animals were inspected post mortem according to official procedures in Chile, where mandatory inspection sites are: heart, tongue, masseter, oesophagus, diaphragm and superficial observation of the carcass. A total of 1158 (0.58%) animals were diagnosed positiveto C.bovis. Of the positive cases 98.45% were infected with the slight form (up to 4 cysts); the carcasses of these bovines were sent to sanitation before being used for human consumption. Only 1.55% of the positive cases corresponded to amassive infection (more than 4 cysts); these carcasses were condemned and not suitable for human consumption according to the official inspection procedure in Chile. The prevalence of C.bovis was higher in oxen and cows, hence higher in older cattle. In females the infection was more prevalent than in males. The occurrence of cysticercosis was observed in all months of the year. In conclusion, the prevalence of cysticercosis PFCs varied according to gender, class and level of infection.
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Vol. 3, No. 2