Fish Meal Quality: How to Check Freshness (TVB-N), Protein and Storage Life

Posted by

On Oktober 8, 2026

Ulasan Dimatikan

Quick answer: Good fish meal combines high protein with freshness. Check crude protein, TVB-N (a freshness indicator, lower is better), histamine, fat oxidation, salt and sand (acid-insoluble ash). Store bags dry, ventilated and off the floor, and make sure the meal contains an antioxidant, because fish oil oxidises and can self-heat in hot climates.

Updated October 2026 · NDRG Kokal Enterprise, Sarawak, Malaysia

Key facts

Freshness test	TVB-N (lower is fresher)
Safety test	Histamine, salmonella
Adulteration check	Sand/acid-insoluble ash, salt
Oxidation control	Added antioxidant (e.g. ethoxyquin or natural)
Storage	Dry, ventilated, off the floor
Typical shelf life	6–12 months stored well

Key fish meal quality tests

Test	What it shows	Good result
Crude protein	Nutritional value	Matches grade (55–65%)
TVB-N	Freshness of raw fish	Low (premium grades often below about 120 mg/100 g)
Histamine	Spoilage; can harm animals	Low
Fat and peroxide value	Oxidation and rancidity	Within spec, stabilised
Salt	Processing and dilution	Low (often below 3%)
Sand / acid-insoluble ash	Adulteration	Very low

Simple checks at delivery

Colour: even light to medium brown; very dark may mean overheating.
Smell: fresh fishy, not ammonia-like, burnt or rancid.
Texture: free-flowing, no lumps, insects or mould.
Bag labels and batch numbers match the certificate of analysis.

Storing fish meal in tropical conditions

Stack bags on pallets with space for air flow.
Keep out of direct sun and away from wet walls.
Use first-in, first-out and check stock temperature in large piles.

Read our fish meal buying guide or order fish meal.

Frequently asked questions

What is TVB-N in fish meal?

Total volatile basic nitrogen, a measure of how fresh the raw fish was. Lower values mean fresher, higher-quality fish meal.

How do I know if fish meal is good quality?

Check protein, TVB-N, histamine, salt and sand on the certificate of analysis, and inspect colour, smell and texture.

Why does fish meal need an antioxidant?

Its fish oil oxidises easily, which causes rancidity and can make stored meal heat up.

Buy in bulk: request a wholesale quote from NDRG Kokal Enterprise, Siburan, Sarawak. Call or WhatsApp +60 13-739 1922 or email info@ndrgkokalenterprise.com.

Blog