Análisis microbiológico de las heces fecales caninas producto de la descomposición en un biodigestor

Abstract

There are different ways to recycle in the agricultural field, one solution can be the use of vegetable or animal waste in the preparation of solid or liquid fertilizers, for example in the preparation of a biol which is a liquid biofertilizer rich in nutrients and beneficial microorganisms. Among the solid waste that has been little studied is canine fecal waste, which is considered an environmental pollutant, both in terms of odors and space, due to the lack of adequate forms of handling and final disposal of this excrement. A descriptive analysis was carried out based on the microbiological, physical and chemical laboratory results of the samples obtained from the biodigester in the initial and final stages of the experimental phase, which lasted 60 days and was conducted at "Santa Teresita" Animal Welfare Center located in San Roque neighborhood of Guano Canton in Chimborazo Province. The results of the microbiological analysis show a decrease of more than 90% of the pathogens present at the beginning of the experimental phase, while the chemical analyses indicate lower values in macro and micronutrients than those recommended as optimal for the application of a biol, finally obtaining 0.39 dollars for each dollar invested. In conclusion, the fermentation phase inside the biodigester contributes to the elimination of pathogens from the biol, while at the chemical level the proportion of our biol to be used must be increased to obtain the expected yield and the correct concentration of macro and micro nutrients.