What feed pellet ladder was designed for the Atlantic salmon smolt RAS feeding programme — Norway?

Feed pellet ladder: 1.5 · 2.0 · 3.0 · 4.5 · 5.0 mm extruded, 22–34% lipid. Reference scenario for a 8M smolts/year · RAS · extruded feed 1.5–5 mm aquaculture (atlantic salmon smolt) project in Norway.

What daily feed volume was designed for the Atlantic salmon smolt RAS feeding programme — Norway?

Daily feed volume: 6.8 t/day peak (post-smolt phase). Reference scenario for a 8M smolts/year · RAS · extruded feed 1.5–5 mm aquaculture (atlantic salmon smolt) project in Norway.

What feeding frequency was designed for the Atlantic salmon smolt RAS feeding programme — Norway?

Feeding frequency: 24–36 events/day, camera-modulated. Reference scenario for a 8M smolts/year · RAS · extruded feed 1.5–5 mm aquaculture (atlantic salmon smolt) project in Norway.

What water temperature was designed for the Atlantic salmon smolt RAS feeding programme — Norway?

Water temperature: 12–14 °C (RAS-controlled). Reference scenario for a 8M smolts/year · RAS · extruded feed 1.5–5 mm aquaculture (atlantic salmon smolt) project in Norway.

What oxygen setpoint was designed for the Atlantic salmon smolt RAS feeding programme — Norway?

Oxygen setpoint: ≥85% saturation at outlet. Reference scenario for a 8M smolts/year · RAS · extruded feed 1.5–5 mm aquaculture (atlantic salmon smolt) project in Norway.

What waste-feed threshold was designed for the Atlantic salmon smolt RAS feeding programme — Norway?

Waste-feed threshold: ≤2% uneaten pellets (auto pause). Reference scenario for a 8M smolts/year · RAS · extruded feed 1.5–5 mm aquaculture (atlantic salmon smolt) project in Norway.

What economic fcr (efcr) did the Atlantic salmon smolt RAS feeding programme — Norway achieve?

Economic FCR (eFCR): 0.98 (representative outcome for projects of this scope).

What smolt uniformity (cv) did the Atlantic salmon smolt RAS feeding programme — Norway achieve?

Smolt uniformity (CV): 8.7% (representative outcome for projects of this scope).

What uneaten pellet loss did the Atlantic salmon smolt RAS feeding programme — Norway achieve?

Uneaten pellet loss: <1.5% (representative outcome for projects of this scope).

What growth to 150 g did the Atlantic salmon smolt RAS feeding programme — Norway achieve?

Growth to 150 g: 9.8 months (from first-feeding) (representative outcome for projects of this scope).

What mortality (ras phase) did the Atlantic salmon smolt RAS feeding programme — Norway achieve?

Mortality (RAS phase): 3.2% (representative outcome for projects of this scope).

Reference Delivery

Atlantic salmon smolt RAS feeding programme — Norway

Q: What growth to 150 g did the Atlantic salmon smolt RAS feeding programme — Norway achieve?

Growth to 150 g: 9.8 months (from first-feeding) (representative outcome for projects of this scope).

Illustrative scenario: post-smolt land-based RAS facility standardising a full extruded salmon-feed programme with automated distribution, waste-feed detection cameras and per-tank pellet-size stepping to hit target smolt weights before sea transfer.

Norway: Country
Aquaculture (Atlantic salmon smolt): Category
8M smolts/year · RAS · extruded feed 1.5–5 mm: Scale
3: Reference outcomes

Load requirements

Design loads used to size housing, utilities and equipment.

Feed pellet ladder

1.5 · 2.0 · 3.0 · 4.5 · 5.0 mm extruded, 22–34% lipid

Daily feed volume

6.8 t/day peak (post-smolt phase)

Feeding frequency

24–36 events/day, camera-modulated

Water temperature

12–14 °C (RAS-controlled)

Oxygen setpoint

≥85% saturation at outlet

Waste-feed threshold

≤2% uneaten pellets (auto pause)

System design choices

Why each subsystem was specified the way it was.

Area	Choice	Rationale
Feed storage	6 outdoor silos + N₂-blanketed indoor day-bins	Extruded high-lipid feed oxidises fast — N₂ blanketing preserves omega-3s to time of use.
Distribution	Central blower system + rotary distributor per 4 tanks	Blower system avoids per-tank hoppers; reduces pellet dust vs vacuum lines.
Dosing	Load-cell feeders, ±10 g per event	Precise per-event dose supports 30+ meals/day without overfeed at low fish weights.
Waste-feed control	In-tank cameras + AI pellet detection, auto-pause	Detects uneaten pellets within 2 s; cuts overfeeding — direct FCR gain and reduced RAS bioload.
Ration engine	Biomass-linked feed table, daily reforecast	Growth curve reforecast from weekly sampling keeps ration on target without manual charts.

Results

Representative KPIs achieved on projects of this scope.

Economic FCR (eFCR)

0.98

Smolt uniformity (CV)

8.7%

Uneaten pellet loss

<1.5%

Growth to 150 g

9.8 months (from first-feeding)

Mortality (RAS phase)

3.2%

Representative outcomes

Typical scope: 24 tanks, 8M smolts/year, 1.5→5 mm pellet ladder
Typical outcome: eFCR 0.98 (vs 1.12 baseline)
Typical outcome: uneaten pellets <1.5% (camera-verified)

Note: This case study is an anonymized reference scenario. Specific client identities, contract values and commercial terms are withheld under NDA. Figures reflect typical outcomes for projects of this scope and are not a guarantee for your project.