Research Paper
Year: 2020 | Month: October | Volume: 7 | Issue: 10 | Pages: 19-26
In Vitro Assessment of the Defaunating Capacity of Various Types and Levels of Supplemental Lipid on Rumen Liquor of Goat (Capra Hircus Linn.)
Ronel O. Reproto1, Lolito C. Bestil2
1College of Agriculture and Fisheries, Capiz State University – Pontevedra, Pontevedra, Capiz 5802 Philippines
2College of Agriculture and Food Science, Visayas State University, Baybay City, 6521 Philippines
Corresponding Author: Ronel O. Reproto
ABSTRACT
Effects of supplemental lipid on rumen microbial population vary because of their differences in fatty acid profiles. Hence, preliminary assessment of lipid sources and knowing the right amount to add up in the diet is a key for lipid supplementation to be successful. This study was designed to investigate the defaunating capacity of various types of lipids added to rumen liquor in vitro at 3% and 6% dry matter intake per day (DMI/d) of goat in relation to rumen volume and body weight. The experiment was set up in a Completely Randomized Design (CRD) with seven treatments: T0 – without fat, T1 – Corn oil at 3%, T2 - Corn oil at 6%, T3 – Coconut oil at 3%, T4 - Coconut oil 6%, T5 – Lard fat at 3% , T6 - Lard fat at 6%, replicated three times. Rumen liquor was collected from goat weighing fifteen kilograms via oral stomach tubing connected to syringe, thereafter, microbial population was evaluated before and after lipid addition. Results revealed that corn oil, having highest percentage of long-chain polyunsaturated fatty acids showed the greatest defaunating capacity for protozoa in comparison to coconut oil and lard fat containing more medium chain saturated fatty acids and long-chain monounsaturated fatty acids, respectively. It was also found that corn oil caused the lowest reduction in bacterial population and minimal fluctuation in rumen liquor pH. It is, therefore, recommended to use corn oil up to 6% of DMI/d, but coconut oil and lard fat be added up to only 3% DMI/d.
Keywords: In vitro, rumen liquid, lipids, defaunation, goat
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