Stomach Environment, Serum Metabolites and Microbial Cells of Goats Fed Condemned Engine Oil as Option for Waste Oil Management

Abstract

The experiment was carried out with the objective of developing and adaptive rumen microbial ecology towards the breakdown of different of different oils as enshrined on this work, for bioremediation on waste oil. The study was conducted in Michael Okpara University Teaching and Research Farms. The diets contained T1 = 0% oil, T2 = 5.5% palm oil (PO), T3 = 5.5% condemned engine oil (CEO), and T4 = 5.5% palm kernel oil (PKO), sawdust, poultry litter, palm kernel cake and 5% ruminant concentrate mixed were used to balance the diets in a completely randomized design. 40 unsexed Sokoto red goats aged between 6 to 7 months were divided into 4 treatments of 5 replicates, in a completely randomized design (CRD) and housed in 0.5 by 0.75m2 floor space pens. Fed for a period of 52 days. The results were separated according to the parameters of microbial cells count, serum metabolites, stomach ecology and growth rate. The investigation revealed that microbial load counts, average dry matter of stomach compartment, serum metabolites and growth rate were significantly (p<0.01) influenced by treatments. Recticulo-rumen microbial load counts declined with goats fed diets supplemented with condemned engine oil. This shows that microbial community of rumen fed different oils were greatly affected. The microorganisms may become adaptive and genetically improve into oil eating microbes, when advance procedures are carried out. It can be concluded that, long time inclusion of condemned engine oil in the diets of goats, the recticulo-rumen microbes would redesign its enzymatic feeding mechanism to feed on condemned engine oil.