Fermentação dos dejetos suínos com e sem à adição de casca de arroz: efeito na composição microbiológica

Abstract

The fermentation of manure is performed to reduce or inactivate pathogenic microorganisms and their toxicity prior to land application. The fresh manure or unstabilized can change the morphological characteristics of the plants, and contaminate the environment as a whole, however, the use of manure after fermentation may provide a synergistic effect to the physiological development of diverse cultures. The aim of this study was to evaluate the fermentation process of pig manure mixed or not with rice husk, before realizing that microbiological analyzes, specifically for total coliform, fecal coliform and Salmonella sp. The experiment was conducted at the farm I Yargo Pig, located in the city of Itaqui-RS. Waste of pigs were placed in composting, treatment 1 was 100% waste, which corresponds to 70% of treatment 2 and treatment 2 was 70% and 30% of waste rice husk. There were five replicates per treatment, thus working with 10 composters. Each repetition was considered an experimental unit. Before the laboratory tests it can be seen that there was no presence of Salmonella in any of the treatments, another highlighted was reduced levels of total coliforms and, also having an interaction treatment / day for coliforms in both treatments however it is not consistent with the law, where the most probable number per gram of dry matter (MPN / g DM) is 1 x 10³.