Start / Livestock and aquaculture / Fish farming
See how many kilos of feed the batch consumes per kilo of fish produced, and what that costs.
Pre-sizing and estimating tool: the results do not replace a design, calculation, or report signed by a qualified professional, nor verification against the applicable standards.
Feed cost per kg produced for conversions of 1.2 to 2.0; the highlighted bar is yours.
Cost per kg produced for feed prices of R$ 1.00 to R$ 3.00; the point is your price.
Drag the controls to simulate data different from what you entered (from 30% less to 30% more) and watch the result change instantly.
Feed cost per kilo of fish produced, for conversions of 1.2 to 2.0 and different feed prices.
The calculation done in steps, with the values you entered.
The calculation memo gathers this page's inputs, results, equations, assumptions, and references, with fields for project, responsible person, and review. The full report also includes the charts and interpretations, in color. In the print window, choose Save as PDF.
Enter the stocked fish, the cycle losses, the initial and final average weights, the feed consumed, and the feed price. The calculator shows the conversion, the biomass gain, and the feed cost per kilo produced.
10,000 fish stocked at 20 g, 10% losses, final weight of 500 g, 4,600 kg of feed and a price of R$ 3.20 per kg.
Live fish = 9,000. Gain = 9,000 × 0.5 − 10,000 × 0.02 = 4,500 − 200 = 4,300 kg. Conversion = 4,600 ÷ 4,300 = 1.07. Feed cost per kg = 1.07 × 3.20 = R$ 3.42.
It depends on the species, the feed, the temperature, and the system. Compare the batch with the target for the species and with your fish farm's history.
Because a dead fish ate feed but is not part of the biomass sold. Without deducting it, the conversion looks better than it really is.
No. Fish are cold-blooded and conversion depends heavily on water temperature. Use references for the species itself.
No. This covers only feed. Total cost includes energy, labor, fingerlings, and maintenance. For the full cost, see the cost per kg and breakeven point calculator.
Important notice: the Agrocalcs tools make estimates and preliminary sizing based on the data entered and on published engineering methods. They do not replace a design, a calculation report or a report signed by a qualified professional (CREA/ART), nor verification against the applicable technical standards and legislation, such as the Regulatory Standards of the Ministry of Labor. Material and fuel properties vary: check with the manufacturer or with analyses of your process before deciding. By using the site, you agree to the Terms of Use.
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