DETERMINAÇÃO FÍSICA E QUÍMICA DE DEJETOS ORIUNDOS DE CRIATÓRIOS DE ANIMAIS

Abstract

Environmental impacts are related to any change that causes changes in the physical, chemical and biological properties of the environment. (NUNES, 2017). The objectives are to reduce environmental damage and encourage farmers to adopt the use of waste as a form of fertilization, since they can be rich in nutrients, in addition to being destined in a sustainable way, being required of livestock management practices that ensure productivity and primarily to conserve the environment (MOSELE A.C., 2019). The physical and chemical characterization of the samples of the waste was obtained by performing the following analyses: humidity (KIEHL, 1985), pH in water and calcium chloride (KIEHL, 1985), organic carbon (EMBRAPA, 1997), organic matter (EMBRAPA, 1997), total nitrogen Kjeldahl (EMBRAPA, 1997), total phosphorus (EMBRAPA, 1997), concentration of metals (Na, K, Mn, Ca, Cu) (SOARES et al., 2004). The pig presented higher humidity, pH in water and pH in CaCl_2, total phosphorus, and calcium and copper. The equine presented higher total organic carbon and organic matter index. The bird stands out with a higher amount of nitrogen, potassium and total sodium. And the goat's highest manganese index.