Decreasing the Biotoxicity of Native Chicken's Manure by Reducing its Greenhouse Gases Emission Using Oregano (Origanum vulgare) and Thyme (Thymus vulgaris) as Feed Additive Source

Abstract

INTRODUCTION

People often picture pollutants as factories and industrial wastes when talking about the causes of global warming. inreality, it is not the whole picture of it because different greenhouse gases such as methane, nitrous oxide, and carbon dioxide emitted in the manures of poultry animals like native chicken are also one of the big contributors of the depletion of the ozone layer. Because the demand for chickens in the country is increasing rapidly every year, it only means it will yield to more secretion of greenhouse gases in the atmosphere. On the other hand, thyme and oregano were used because they contain essential compounds called carvacrol and thymol which both exhibit antimicrobial properties and also kill methanogens -a methane-producing bacteria. The study will be beneficial to the environment for it may by decrease the production of greenhouse gases. It will also be beneficial to the poultry industry as it provides an organic feed that will improve the health of chickens.

METHODS

The randomized block design was used in the preparation of the setups to determine the varying concentrations of oregano and thyme in the feed. The researcher fed the chickens and collected the different manures secreted, all of which underwent a series of tests. The general test conducted was thermolysis or thermal decomposition where the different gases present in the manure were extracted and then subjected to densification where the density of the gas collected was compared to the density of methane gas, nitrous oxide, and carbon dioxide to see the significant difference of thyme and oregano-manipulated set-ups.

RESULTS

Results show that set-up 4 -with 15% Oregano, 15% Thyme, and 70 % Commercial Feeds -has the lowest density and has the largest decrease in the density of different the greenhouse gases (5.38 methane, 9.13 carbon dioxide, 2.76 nitrous oxide). This means it exhibits the lowest volume of methane, carbon dioxide, and nitrous oxide produced among all the set-ups.

DISCUSSIONS

The study justified the potential of oregano and thyme as a feed additive source to native chicken to decrease the biotoxicity of its manure and reduce its emission of greenhouse gases. The results proved that the balanced concentration of thyme and oregano was the most effective. However, the calculations conducted was only based on the properties of different gases that is why the researcher recommends the use of a high-end device that will measure the specific amount of gases.