Feed transparency
What's Actually in Your Feed?
Why Tucker lists ingredients by name instead of using collective terms.
For livestock and poultry feed customers. Ingredient and date examples illustrate labels, not feeding recommendations.
In this guide
An ingredient list should help you understand what you are buying. At Tucker Milling, we do not use collective ingredient terms. We name the ingredients in our feeds because you deserve more information than a category. [6]
A category can leave a lot unsaid
Collective feed ingredient terms group different ingredients under one name. Instead of listing corn and oats individually, a livestock or poultry feed label may use grain products. Instead of naming soybean meal or cottonseed meal, it may say plant protein products. Federal rules allow specified collective names under prescribed conditions for livestock and poultry feeds. [1]
Those terms give a manufacturer flexibility. Ingredients within a category can change with cost or availability without requiring the category name on the label to change. AAFCO's feed inspectors manual also makes an important distinction: ingredients within the same category are not necessarily nutritionally equivalent. [2]
The customer sees the category. The customer may not see the substitution.
Fish meal and hydrolyzed leather meal: the same broad category
Here is a striking example of how much one term can encompass. An archived government reproduction of AAFCO's 2015 ingredient classifications lists both fish meal and hydrolyzed leather meal under animal protein products. [3]
Fish meal can be a useful protein ingredient in an appropriately formulated diet. University of Minnesota Extension includes it among highly digestible ingredients used in starter pig diets. That is a specific use, not a recommendation to add it to every animal's feed. [4]
Hydrolyzed leather meal is a very different material. The current federal definition describes leather scraps processed with steam under pressure. Its regulation specifies a limited use as a protein source in swine feed and includes labeling requirements. [5]
| Broad category | Named ingredient | What the name tells you |
|---|---|---|
| Animal protein products | Fish meal | Identifies a fish-derived ingredient you can evaluate for its intended use. |
| Animal protein products | Hydrolyzed leather meal | Identifies processed leather scraps, with specific regulatory conditions. |
The historical classification illustrates the breadth of the term. It does not mean that every feed bearing it contains leather, or that every listed ingredient is permitted for every species. A collective name does not override an ingredient's use restrictions or other labeling requirements.
It does mean that the category alone cannot tell you which ingredient went into the bag.
Ingredient identity matters
Knowing the ingredient gives you a starting point for asking better questions: Why is it included? Is it appropriate for this animal? What role does it serve in the whole feeding program?
An unfamiliar name is not automatically a poor ingredient. A familiar name is not a complete guarantee of quality. Naming the ingredient makes those questions possible; a broad category leaves you with less to evaluate.
The guaranteed analysis and ingredient list also answer different questions. The analysis gives nutrient guarantees. The ingredient list identifies the materials used. Read them together, along with the intended species, feeding directions, and cautions. For help, start with Reading Feed Tags and Beyond Guaranteed Analysis.
Why Tucker names the ingredients
We choose explicit ingredient names because we want you to know what you are feeding. We do not believe an ingredient list should obscure the ingredients behind broad categories.
If you want to understand an ingredient in a Tucker feed, you can point to its name and ask us about it. That is the conversation we want to have.
You deserve to know what is in the bag. We put the names on the label.
Have a question about a feed tag? Ask our nutritionist, and bring the product name and a photo of the current tag.
Sources
Sources explain ingredient labeling and the historical collective classifications; external publishers do not endorse Tucker Milling. The company-practice note identifies Tucker’s ingredient policy.
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21 CFR 501.110 — Collective names for feed ingredients ↩
Federal scope, examples, and conditions. Accessed October 9, 2026.
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AAFCO Feed Inspectors Manual, ninth edition, Chapter 4, pp. 46–47 ↩
Substitution flexibility and nutritional variability. Accessed October 9, 2026.
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Canadian Food Inspection Agency — Archived collective-terms proposal, Appendix 2 ↩
Historical reproduction of the 2015 AAFCO classifications; not a statement of current Canadian approval or universal U.S. permission. Accessed October 9, 2026.
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University of Minnesota Extension — Formulating farm-specific swine diets ↩
Fish meal in starter pig diets. Accessed October 9, 2026.
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21 CFR 573.540 — Hydrolyzed leather meal ↩
Current identity, restricted use, and labeling requirements. Accessed October 9, 2026.
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Tucker Milling: ingredient-labeling policy ↩
Tucker uses explicit ingredient names rather than collective terms.