Determinação in vitro do potencial de produção de metano da aveia (Avena sativa L.) IAPAR 126 cultivada com diferentes níveis de nitrogênio

Abstract

With the growth of the world population it is necessary to increase food production. The Brazilian cattle industry is mainly in pasture production systems, while Brazil has of 211 million hectares of pasture and due to increased livestock grazing, there is growing concern in the emission of greenhouse gases The Methane is one of the ruminal fermentation end product of the digestion in ruminants because it is a complex process involving interactions between diet, microorganisms and animals, the fraction of ingested food that is absorbed depends on the speed at which it is fermented in the rumen, time remains susceptible to microbial attack. Among the types of microorganisms methanogenic species has great affinity to synthesize CH4 and CO2 from H2 to generate its energy needs for growth and production serves as a primary "drain" of hydrogen. Thus the aim of this study to determine the production potential of methane (CH4) in vitro of oat pasture IAPAR 126. The field work was conducted at the Universidade Técnologica Federal do Paraná - Campus Dois Vizinhos, UNEP Mechanization in April period to September 2013. The experimental area was established 12 plots of 24m2 (3 x 8m), divided into four blocks, with spacing of 0.5 m plots with a total area of 96m2. The digestibility analysis and the kinetics of ruminal degradation by in vitro method with gas production will be realized. The gas pressure is obtained by manometric readings and the volume was measured by means of graduated syringes (10 mL). The set time of assessment was fractionated and the readings taken 1 , 4, 8 , 12, 24, 48 and 96 hours of incubation. It can be seen that in this case there was no difference between the treatments , but the climatic factor led to increased production of methane in one of the cuts that were 40.3718 , 47.6044 and 40.9360 .