Tilapia is widely farmed in Asia, Africa and Latin America, but the fish prefer warm water and suffer when temperatures drop. Slower growth in cold months can reduce farmersĂ income and production.
Researchers from Egypt and the Philippines tested two feed ingredients, lecithin and Arabic gum, as dietary supplements to help tilapia cope with lower temperatures. The study reported that the supplements helped regulate metabolism, enzyme activity and mineral balance, and fish fed the diet showed significant improvements in growth, survival rates and antioxidant responses.
The paper, published in Aquaculture Reports, is the first to test these ingredients as a feeding strategy for tilapia in cold environments. A fish physiologist who reviewed the work called it a thorough study, but experts warn the benefits are mainly for subtropical farms with marginal temperature fluctuations rather than very cold regions. The Food and Agriculture Organization reports that tilapia remains a popular, cost-efficient choice globally.
Difficult words
- prefer — like something more than other options
- supplement — something added to food for extra benefitsupplements
- metabolism — chemical processes that keep a body working
- enzyme — a protein that speeds up chemical reactions
- antioxidant — a substance that prevents cell damage from oxidation
- survival — continuing to live or exist in hard conditions
- subtropical — a region with warm but not very hot climate
- physiologist — a scientist who studies how living bodies function
Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.
Discussion questions
- Do you think using dietary supplements for farmed fish is a good idea? Why or why not?
- How might small temperature changes affect farms near you, and how could farmers respond?
- What are possible benefits and limits of testing new feed ideas in subtropical farms?
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