Metacestode of Taenia solium inactivation by composting: a feasible alternative in rural areas of mexico

Main Article Content

Hbacuc Esquivel
Nelly Villalobos
Alejandro Vargas
José Juan Martínez Maya

Abstract

Cysticercosis by Taenia solium metacestode affects pigs, giving ground for meat confscation. Composting is an alternative disposition method for confscated carcasses and other animal debris, inactivating and destroying pathogens in the carcas- ses. In this study, composting was evaluated as a method to inactivate T. solium metacestodes. Seven compost cone-shaped piles were built, and three depth-zones were defned within them. Each zone was divided into 4 subzones, and a portion of contaminated meat was introduced into each subzone. Meat was sampled at 24, 36, 48, and 72 h and tested for evagina- tion in vitro. The maximum required time for cysticercus inactivation was 48 h. Meat was incorporated to compost after 7 days. No signifcant differences were found in cysticercus inactivation among the compost zones (P > 0.05), but signifcant differences were found with respect to the outside. Therefore, all zones were regarded equally effective to inactivate viable T. solium cysticerci.

Keywords:
Composting inactivation metacestode T. solium

Article Details

References

Larralde C, Aluja AS. Cisticercosis. Guía para profesionales de la salud. México DF: Secretaría de Salud Instituto Nacional de Salud Pública y Fondo de Cultura Económica, 2006; 104-127

Wilkinson KG. The biosecurity of on-farm mortality composting. J Appl Microbiol 2007; 102: 609-618.

Christesten K, Carlsbaek M, Kron E. Strategies for evaluating the sanitary quality of composting. J Appl Microbiol 2002; (92): 1143-1158.

Rodríguez M, Córdoba, Vásquez A. Manual de Compostaje Municipal. Tratamiento de residuos sólidos urbanos. México DF: Secretaría del Medio Ambiente y Recursos Naturales, 2006:63-66.

Liang C, Das K, McCledon R. The Influence of temperature and moisture contents regimes on the aerobic microbial activity of a biosolid composting blend. Bioresour Technol 2003; (86): 131-137.

Sánchez A. Conceptos básicos de gestión ambiental y desarrollo sustentable. México DF: Secretaría del Medio Ambiente y Recursos Naturales, 2011.

Rickeboer J, Margaert J, Cosecants J, Deprins K, Swings J. Microbial aspects of biowaste during composting in a monitored compost bin. J Appl Microbiol 2003; (94): 127-137.

Vargas A., Mendoza S, Martínez R, Ciprian A. Elaboración de composta con residuos de granja y cálculos de la mano de obra. Memorias del XLV Congreso Nacional de AMVEC; 2010 agosto 4-7; Acapulco (Guerrero) México. México (DF): Asociación Mexicana de Médicos Veterinarios Especialistas en Cerdos, AC, 2010:108.

Wayne WD. Bioestadística: base para el análisis de las ciencias de la salud. México DF: Limusa, 2006.

Nava G, Villalobos AN, Aluja AS. Efecto de diferentes temperaturas (calor y frio) en carne de cerdo sobre la viabilidad del metacestodo de Taenia solium. Vet Méx 2009; 40: 191-196

Jones P, Martin M. A review of the literature on the occurrence and survival of pathogens of animals and humans in garden compost. Standards report November 2003. Oxon, UK: The waste and resources action programme, 2003:1-33