Pré-compostagem de cadáveres de bovinos acometidos pelo botulismo

Abstract

Five carcasses of cattle that died from botulism were composted in individual isolated beds with the purpose of monitoring the effect on spores of Clostridium botulinum and of botulinum toxin. The diagnosis of botulinum poisoning was based on clinical and pathological, epidemic and/or laboratorial characteristics. Of the five bovines with clinical signs of chronic botulism, three were affected by the type D toxin, one by the CD complex, and one was negative for toxin and spores of C. botulinum in the viscera using a mouse bioassay. The composting process was carried out in beds with carcasses cut up and mixed with sawdust as a carbon source. They were kept anaerobic under a plastic sheet for 50 days. The temperature of the beds was monitored during the period and oscillated from 40.5 to 52.4°C. After this time, soft tissue had complete decomposed with a significant loss of weight (26.5-44.5%). The remaining bones no longer contained spores or botulinum toxin in the 5 samples taken from each carcass. Only 2 of the 200 samples of homogenized remaining (40 for each carcass) contained spores of C. botulinum type C. All samples were negative for botulinum toxin using the mouse bioassay. Composting carcasses of cattle that died from botulism eliminated botulinum spores and toxin from the remains.INDEX TERMS: Composting, bovine carcasses, botulism, botulinum toxin C and D, Clostridium botulinum.

Energetic efficiency of a deep bed swine production system

“…In the case of pigs that die during the breeding process, an opportunity to increase the energy converted (output) in the form of compost (manure), is through the realization of composting carcasses of these animals (CURCI et al, 2007;SANTOS & LUCAS JUNIOR, 2004). Furthermore, composting of dead animals contributes to the inactivation of pathogenic bacteria, viruses and parasites (CURCI et al, 2007;ORRICO JUNIOR et al, 2010).…”

“…Furthermore, composting of dead animals contributes to the inactivation of pathogenic bacteria, viruses and parasites (CURCI et al, 2007;ORRICO JUNIOR et al, 2010).…”

Broiler litter reutilization applying different composting concepts

“…Those authors observed 100% reduction, with numbers of 1.1 x 10 8 NMP g -1 in the beginning and 0 NMP g -1 at the end of composting for total and thermotolerant coliforms. Other studies, such as those of Curci et al (2007), Torres et al (2007), and Orrico et al (2007), also observed that composting was efficient to eliminate pathogenic microorganisms. The maintenance of bacterial counts in the present study may have been due to shorter fermentation time, favoring further nitrogen reduction.…”

Gerenciamento de resíduos de serviço de saúde de animais de produção: revisão

“…Os RSSA de origem orgânica como carcaças e placentas podem ser tratados pelo sistema de compostagem, atingindo os objetivos sanitários, ambientais e econômicos desse procedimento; portanto, esse sistema atende plenamente ao que deve estar previsto em um PGRSS (CURCI et al, 2007;CESTONARO et al, 2010;SOTO et al, 2010;VALENTE;XAVIER, 2015). Esse sistema vem obtendo resultados satisfatórios, tornando-se uma importante forma de tratar os resíduos orgânicos (SUNADA et al, 2014).…”