Protein Sources for Cricket Feed: Comparing Options by Cost and FCR
The protein source in your cricket feed determines more than just the protein percentage. It affects FCR, palatability, amino acid profile, regulatory considerations (for food-grade production), and cost. No comparison of cricket feed protein sources exists from a farmer perspective. This guide fills that gap.
Soy-based protein delivers the best FCR-to-cost ratio of any common cricket feed protein source at commercial scale. But soy isn't the only option, and depending on your market positioning, it might not be the best one.
TL;DR
- Include at 20-30% of the total diet to achieve 22-25% crude protein in the blend
- Non-GMO soy meal is available but at a notable cost premium (typically 40-70% more expensive)
- At inclusion rates of 5-10% of the diet, fish meal supplements soy protein effectively without palatability issues
- At higher inclusion rates, some crickets show reduced feed consumption, palatability begins to decline above 10% of the diet for most batches
- Practical use: include at 5-10% of the diet alongside soy meal to reduce cost without measurably impacting FCR
- Include at 3-8% of the diet alongside soy as the primary protein source
- Supplement with 5-10% brewer's yeast for palatability benefits and B vitamin provision, and 5-10% fish meal to address potential methionine limitations
The Protein Source Comparison
1.
- Include at 20-30% of the total diet to achieve 22-25% crude protein in the blend.
- Non-GMO soy meal is available but at a notable cost premium (typically 40-70% more expensive).
2.
- At inclusion rates of 5-10% of the diet, fish meal supplements soy protein effectively without palatability issues.
- At higher inclusion rates, some crickets show reduced feed consumption, palatability begins to decline above 10% of the diet for most batches.
- Use as a supplement, not as the primary protein source.
3.
- Practical use: include at 5-10% of the diet alongside soy meal to reduce cost without measurably impacting FCR.
The Protein Source Comparison
1. Dehulled Soy Meal (44-48% Protein)
Cost per pound: $0.20-$0.40 (bulk)
FCR impact: Excellent, soy amino acid profile well-suited to cricket growth requirements
Palatability: Good, cricket acceptance is high at standard inclusion rates (20-30% of diet)
Availability: Excellent, widely available from agricultural feed suppliers nationwide
Regulatory: GRAS (Generally Recognized as Safe) for animal feed; well-characterized for human food applications when crickets are used for flour production
Soy meal is the workhorse protein source for DIY cricket feed at commercial scale. The combination of high protein content, good FCR, availability, and low cost makes it the dominant choice for farms that have run the numbers. Include at 20-30% of the total diet to achieve 22-25% crude protein in the blend.
One consideration: GMO soy is the dominant form commercially. If you're targeting non-GMO or organic cricket flour markets, your feed protein sources need to align. Non-GMO soy meal is available but at a notable cost premium (typically 40-70% more expensive).
2. Fish Meal (60-65% Protein)
Cost per pound: $0.70-$1.40 (bulk)
FCR impact: Very good, excellent amino acid profile including high methionine
Palatability: Good at low inclusion rates; palatability issues can emerge above 10% of diet
Availability: Good, available from aquaculture and agricultural feed suppliers
Regulatory: Accepted for animal feed; for food-grade cricket flour, some food brands prefer soy-sourced protein for consumer messaging
Fish meal has a higher protein content per pound than soy and an excellent amino acid profile, particularly for the amino acid methionine which can be limiting in soy-based diets. At inclusion rates of 5-10% of the diet, fish meal supplements soy protein effectively without palatability issues.
At higher inclusion rates, some crickets show reduced feed consumption, palatability begins to decline above 10% of the diet for most batches. Use as a supplement, not as the primary protein source.
3. Corn Gluten Meal (60% Protein)
Cost per pound: $0.25-$0.50 (bulk)
FCR impact: Moderate, deficient in lysine, an essential amino acid; FCR worse than soy if used as sole protein source
Palatability: Good
Availability: Good, widely available as a byproduct of corn wet milling
Regulatory: GRAS; widely accepted
Corn gluten meal has high protein content at a reasonable cost, but its amino acid profile is limiting, specifically low in lysine. Crickets have a dietary lysine requirement that corn gluten doesn't fully meet as a standalone protein source. FCR with corn gluten as the sole protein source is worse than with soy.
Practical use: include at 5-10% of the diet alongside soy meal to reduce cost without measurably impacting FCR. Avoid using as the primary or exclusive protein source.
4. Insect Meal (Black Soldier Fly Larvae Meal, 40-45% Protein)
Cost per pound: $0.80-$1.80 (highly variable)
FCR impact: Good, well-studied amino acid profile for insect feeding
Palatability: Very good, high palatability in most insect feeding research
Availability: Moderate, BSFL meal is growing in availability as the BSF industry scales
Regulatory: Increasingly accepted for animal feed; food-grade use in human food applications is still developing
BSFL meal has generated notable research interest as an insect-to-insect protein source. The palatability for other insects tends to be high, and the amino acid profile is reasonably balanced. The cost is the main barrier: BSFL meal currently runs measurably more expensive than soy on a per-gram-of-protein basis.
For farms with access to low-cost BSFL meal (perhaps producing their own), the palatability advantage and circular economy story may justify inclusion. At current market prices, it's not cost-competitive with soy for most commercial cricket operations.
5. Dried Brewer's Yeast (40-50% Protein)
Cost per pound: $0.50-$1.00 (bulk)
FCR impact: Good, high B vitamin content alongside protein provides a dual benefit
Palatability: Excellent, crickets find brewer's yeast highly palatable
Availability: Good, available from brewing suppliers and agricultural sources
Regulatory: GRAS; widely used in animal feed
Brewer's yeast deserves more attention in cricket feed formulation than it receives. The palatability is exceptional, adding brewer's yeast to a feed formula often increases overall feed consumption, which can offset its higher cost compared to soy on a per-gram-of-protein basis.
Include at 3-8% of the diet alongside soy as the primary protein source. The B vitamins it provides reduce the need for separate vitamin supplementation. An effective formula component, particularly for pinhead and early nymph stages where palatability is most critical.
Cost Per Gram of Protein: The Real Comparison
When comparing protein sources, cost per pound is misleading without accounting for protein content. Cost per gram of protein is the relevant unit.
| Protein Source | Crude Protein % | Cost/lb | Cost per gram of protein |
|---|---|---|---|
| Dehulled soy meal | 44% | $0.30 | $0.030 |
| Corn gluten meal | 60% | $0.38 | $0.028 |
| Fish meal | 62% | $1.00 | $0.073 |
| Brewer's yeast | 45% | $0.75 | $0.075 |
| BSFL meal | 42% | $1.30 | $0.140 |
On a per-gram-of-protein basis, soy and corn gluten are in the same range and far less expensive than fish meal, brewer's yeast, or BSFL meal. This is why soy is the commercial standard.
How Does Feed Protein Source Affect Cricket Flour Amino Acid Profile?
Dietary protein source has a modest effect on the amino acid profile of the finished cricket flour. The effect is smaller than most people assume because the cricket's metabolism measurably buffers dietary amino acid variation.
The practical significance: if your flour buyers require a specific amino acid profile (some pharmaceutical and research buyers do), you may need to optimize your protein source blend. For standard food market flour production, the amino acid profile differences between soy-fed and fish meal-supplemented crickets are within the natural variation range and unlikely to matter to buyers.
FAQ
What is the best protein source for cricket feed?
Dehulled soy meal is the best protein source for commercial cricket feed on a cost-per-gram-of-protein basis, with good FCR and high availability. Supplement with 5-10% brewer's yeast for palatability benefits and B vitamin provision, and 5-10% fish meal to address potential methionine limitations. This three-component protein system delivers excellent FCR at lower cost than any alternative.
Can I use insect meal as a protein source in cricket feed?
Yes, BSFL (black soldier fly larvae) meal has good palatability and a solid amino acid profile for cricket feeding. The current market price makes it measurably more expensive per gram of protein than soy, a major commercial barrier for most operations. If you produce your own BSFL meal or have access to it at very low cost, it's a technically viable protein source. At current market prices, soy remains the cost-effective standard.
How does feed protein source affect cricket flour amino acid profile?
Dietary protein source has a modest effect on cricket flour amino acid profile, buffered measurably by the cricket's metabolism. The practical impact for food market flour buyers is small, within the natural variation range of cricket flour. For pharmaceutical research or buyers with specific amino acid requirements, the effect may be relevant and worth discussing with your buyer before choosing your protein source blend. See the Acheta domesticus feed requirements guide for the dietary targets that directly influence flour quality, and the cricket farm management guide for how to track feed composition in your records.
How do moisture levels in cricket feed affect colony health?
Feed that is too dry reduces palatability and may cause crickets to rely entirely on water gel sources for hydration. Feed with excess moisture molds rapidly in the warm, humid environment of a cricket bin, and moldy feed is a significant exposure route for pathogens. The practical approach is to serve fresh wet foods (fruits, vegetables) separately from dry feed, replace wet items within 24 hours, and store dry feed in a low-humidity area.
Should gut-loading feed differ from the standard production diet?
Yes. Gut-loading targets the 24-48 hours before harvest to maximize the nutritional value transferred to the end consumer of the cricket. Gut-loading diets typically emphasize specific nutrients the buyer requires -- omega-3 fatty acids, calcium, and certain vitamins are common targets. Standard production feed is optimized for growth rate and FCR, not for enriching the nutritional profile of the finished product.
What feed management practices have the biggest impact on FCR?
Two changes consistently improve FCR more than any other: matching feed protein content to the optimal range for the target species (22-25% for Acheta domesticus), and increasing feeding frequency for pinhead-stage crickets (3 times per day versus once). After these two variables, reducing feed waste by feeding to observed consumption rather than fixed quantities is the next highest-impact adjustment.
Sources
- Food and Agriculture Organization of the United Nations (FAO) -- Edible Insects: Future Prospects for Food and Feed Security
- North American Coalition for Insect Agriculture (NACIA)
- Journal of Insects as Food and Feed (Wageningen Academic Publishers)
- American Association of Feed Control Officials (AAFCO)
- University of Georgia Cooperative Extension
The Bottom Line
Soy meal is the commercial standard for cricket feed protein for good reason: best cost-per-gram-of-protein at commercial scale, good FCR, and wide availability. Supplement with brewer's yeast for palatability and fish meal to address amino acid profile gaps.
The alternatives, BSFL meal, corn gluten, dried insects, have specific use cases but don't displace soy as the primary commercial protein source at current prices. Monitor BSFL meal pricing as the BSF industry scales; the cost-per-gram-of-protein gap may narrow over the next several years.
Whatever protein source you use, the 22-25% crude protein target remains the primary specification. The protein source is secondary to achieving that target.
Get Started with CricketOps
Feed management is where your production economics are won or lost. CricketOps lets you log every feed batch, track consumption and FCR by bin, and identify exactly where your feed program is performing and where it is not. Start tracking your feed inputs in CricketOps and get the data you need to improve your cost per pound of cricket produced.