Date of Completion

7-2019

Document Type

Thesis

Degree Name

Grade 12

Keywords

diet, nutrition, fat content, fish, organic farming, Tilapia, lipid content, Oreochromis niloticus

Abstract

Being a staple food in Filipino households, the Oreochromis niloticus is among the top produced fish in the country. It was believed that this fish has health benefits, influencing the boom of tilapia production and consumption. However, a certain study at University of California, Berkeley (2015) states that the tilapia may not have been as healthy as it seems. Another study by Paul et al., has stated that the feeds consumed by the fish may have an effect on its physiology. The main objective for this study is to determine the difference in lipid levels of tilapia that are fed local feeds and commercial feeds by the farm. The Bligh and Dyer method of extraction was utilized in extracting the lipid content levels, and the resulting data was analyzed using an independent two-tailed t-test. After testing, it was discovered that the mean lipid content of the locally-fed tilapia is 0.05 grams, while that of the commercially-fed tilapia is 0.44 grams. The standard amount of lipid content in tilapia is 2.27% to 2.81% of its total weight. Also, the researchers have found out that commercial feeds contribute to a higher amount of lipid content in the tilapia, as it is higher in value than the local feeds. The proponents have concluded that the difference in values of the locally and commercially-fed tilapia is statistically insignificant, as its t-value of -1.024 falls within the critical value of ±2.776. It was also determined that the lipid content in the samples studied were not within the standard range.

First Advisor

Jose Isaak M. Calamlam

Available for download on Saturday, May 15, 2021

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