(By authority conferred on the director of agriculture by section 11 of Act No. 120 of  
the Public Acts of 1975, being S287.531 of the Michigan Compiled Laws)  
R 285.635.1 Definitions and terms.  
Rule 1. (1) As used in these rules:  
(a) "AAFCO" means the association of American feed control officials.  
(b) "Act" means Act No. 120 of the Public Acts of 1975, being S287.521 et seq. of the  
Michigan Compiled Laws.  
(c) "Director" means the director of the department of agriculture.  
(d) "Pet" means any domesticated animal normally maintained in or near the  
household of the owner.  
(e) "Pet food" means any commercial feed prepared and distributed for consumption  
by pets.  
(f) "Principal display panel" is that portion of a label that is most likely to be  
displayed, presented, shown, or examined under normal and customary conditions  
for retail sale.  
(2) Names and definitions for commercial feeds shall be the official definition of  
feed ingredients adopted by AAFCO, except as the director designates otherwise in  
specific cases. The terms used in reference to commercial feeds shall be the official  
feed terms adopted by AAFCO, except as the director designates otherwise in  
specific cases. The names, definitions, and terms adopted by AAFCO shall be  
from their annual publication available from their treasurer.  
History: 1979 AC.  
R 285.635.2 Label format.  
Rule 2. Commercial feeds, except pet foods, shall be labeled with the information  
prescribed in these rules.  
(a) The principal display panel shall show such information in the following  
general format:  
(i) Net weight.  
(ii) Product name and brand name.  
(iii) If drugs are used, the following shall appear:  
(A) The word "medicated" directly following or below the product name in type size  
not smaller than 1/2 the type size of the product name.  
(B) The purpose of medication (claim statement).  
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(C) The required directions for use and precautionary statements or reference to  
their location if the detailed feeding directions and precautionary statements  
required by R 285.635.11 and R 285.635.12 appear elsewhere on the label.  
(D) An active drug ingredient statement listing the active drug ingredients by  
their established name and the amounts pursuant to R 285.635.8(4).  
(iv) The guaranteed analysis of the feed as required under section 5(1)(d) of  
the act, including the following items, unless exempted, and in the order listed:  
(A) Minimum percentage of crude protein.  
(B) Maximum or minimum percentage of equivalent protein from nonprotein nitrogen  
as required in R 285.635.8(5).  
(C) Minimum percentage of crude fat.  
(D) Maximum percentage of crude fiber.  
(E) Minerals, to include in the following order:  
percentages of calcium (Ca), minimum percentages of phosphorus (P), minimum  
and maximum percentages of salt (NaCl), and other minerals.  
(F) Vitamins in such terms as specified in R 285.635.8(3).  
(G) Total sugars as invert in dried molasses products or in products being sold  
primarily for their molasses content.  
(H) Exemptions to the above guaranteed analysis requirements consist  
of the  
1. Guarantees for minerals are not required when specific label claims do not exist and  
when the commercial feed contains less than 6 1/2% of total mineral elements.  
2. Guarantees for vitamins are not required when the commercial feed is neither  
formulated for, nor represented in any manner as, a vitamin supplement.  
3. Guarantees for crude protein, crude fat, and crude fiber are not required when  
the commercial feed is intended for purposes other than to furnish these substances or  
they are of minor significance relating to the primary purpose of the product, such as  
drug premixes, mineral or vitamin supplements, and molasses.  
(b) The name of each ingredient as defined in the official definitions of feed  
ingredients published in the official publication of AAFCO, common or usual name, or  
one approved by the director, shall be used in the ingredient statement.  
Collective terms for the  
grouping of feed ingredients as defined in the official  
definitions of feed ingredients published in the official publication of AAFCO, in lieu  
of the individual ingredients, may be used if:  
(i) Individual ingredients included in a collective term are not otherwise listed on  
the label.  
(ii) The manufacturer provides the director, upon request, with a listing of  
individual ingredients within a defined group that are, or have been, used at  
manufacturing facilities distributing in or into the state.  
(c) The name and principal mailing address of the manufacturer or person responsible  
for distributing the feed shall appear on the label. The principal mailing address  
shall include the street address, city, state and zip code; however, the street address  
may be omitted if it is shown in the current city directory or telephone directory.  
(d) The information required in section 5(1)(a) to (e) of the act shall appear in its  
entirety on one side of the label or on one side of the container. The information  
required by section 5(1)(f) and (g) of the act shall be displayed in a prominent place on  
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the label or container, but not necessarily on the same side as the above  
information. When the information required by section 5(1)(f) and (g) is placed on a  
different side of the label or container, it shall be referenced on the front side with a  
statement such as "see back of label for directions for use." None of the information  
required by section 5 of the act shall be subordinated or obscured by other statements  
or designs.  
History: 1979 AC.  
R 285.635.3 Pet food label information.  
Rule 3. Pet food shall be labeled with the information prescribed in this rule.  
(a) The statement of net content and product name shall be on the principal  
display panel of the label. Other required information may be placed elsewhere on the  
label but shall be sufficiently conspicuous to render it easily readable.  
(b) The label of a pet food shall specify the name and address of the place of  
business of the manufacturer, packer, or distributor of the pet food. The statement of the  
place of business shall include the street address, if any, of the place unless the street  
address is shown in a current city directory.  
(c) The information required to appear in the "guaranteed analysis" shall be listed  
in the following order and in the form stipulated in R 285.635.8:  
Crude protein (minimum)  
Crude fat (minimum)  
Crude fiber (maximum)  
Moisture (maximum)  
Additional guarantees shall follow moisture  
(d) The maximum moisture in all canned pet foods shall be guaranteed and shall not  
exceed 78% of the natural moisture content of the constituent ingredients of the  
product, whichever is greater. Pet foods consisting principally of stew, gravy, sauce,  
broth, juice, or a milk replacer which are so labeled, may contain moisture in excess of  
(e) Guarantees for minerals are not required if a pet food is neither  
formulated for, nor represented in any manner as, a mineral supplement. A guarantee as  
may be given or required shall be expressed as the element and in units of  
measurement established by a recognized authority on animal nutrition such as the  
national research council.  
(f) Guarantees for vitamins are not required if a pet food is neither formulated for,  
nor represented in any manner as, a vitamin supplement. A guarantee as may be given  
or required shall be stated in units of measurement established by a recognized  
authority on animal nutrition such as the national research council.  
(g) A vignette, graphic, or pictorial representation of a product on a pet food label  
shall not misrepresent the contents of the package.  
(h) The words "dog food," "cat food," or similar designations shall appear  
conspicuously upon the principal display panel of a pet food label.  
(i) The label of a pet food shall not contain an unqualified representation or  
claim, directly or indirectly, that the pet food therein contained or a recommended  
feeding thereof, is or meets the requisites of a complete, perfect, scientific, or balanced  
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ration for the entire life cycle or any limited stage of the life cycle of a dog or cat  
unless the product or feeding contains 1 of the following:  
(i) Ingredients in quantities sufficient to  
estimated nutrient  
requirements for all stages or any limited stage of the life of a dog or cat, which have  
been established by a recognized authority on animal nutrition, such as the  
committee on animal nutrition of the national research council.  
(ii) A combination of ingredients which, if fed to a normal animal as the only source  
of nourishment, shall provide satisfactorily for fertility of females, gestation and  
lactation, normal growth from weaning to maturity without supplementary feeding,  
and shall maintain the normal weight of an adult animal whether working or at rest  
and has had its capabilities in this regard demonstrated by adequate testing for the  
life cycle or for the specific stage of growth claimed. The testing shall be in accord with  
the protocol established by the association of American feed control officials.  
History: 1979 AC.  
R 285.635.4 Pet food brand and product names.  
Rule 4. The brand and product name on commercial pet foods shall comply with each  
of the following:  
(a) A flavor designation shall not be used on a pet food label unless the designated  
flavor is detectable by a recognized test method, or is one the presence of which  
provides a characteristic distinguishable by a pet. Any flavor designation on a pet food  
label shall either conform to the name of its source as shown in the ingredient  
statement or the ingredient statement shall show the source of the flavor. The word  
"flavor" shall be printed in the same size type and with an equal degree of  
conspicuousness as  
the ingredient term or terms from which the flavor designation is derived. A  
distributor of pet food employing a flavor designation or claims on the labels of the  
product distributed by it shall, upon request, supply verification of the designation or  
claimed flavor.  
(b) The designation "100%" or "all" or words of similar connotation shall not be  
used in the brand or product name of a pet food if it contains more than 1  
ingredient. However, for the purpose of this subdivision, water sufficient for  
processing, required decharacterizing agents, and trace amounts of preservatives and  
condiments shall not be considered ingredients.  
(c) The terms "meat" and "meat by-products" shall be qualified by designating the  
animal from which the meat and meat by-products are derived unless the meat and  
meat by-products are from cattle, swine, sheep, and goats. For example, "horsemeat"  
and "horsemeat by-products."  
(d) The name of a pet food shall not be derived from 1 or more ingredients of a  
mixture to the exclusion of other ingredients and shall not be one representing any  
components of a mixture of a pet food product unless all components or ingredients are  
ingredients included in the name as specified by subdivisions (a), (e), or (f). The name of  
an ingredient or combination of ingredients may be used as a part of the product name  
if 1 of the following exists:  
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(i) The ingredient or combination of ingredients is present in sufficient quantity  
to impart a distinctive characteristic to the product or is presented in amounts which have  
a material bearing upon the price of the product or upon acceptance of the product by  
the purchaser thereof.  
(ii) It does not constitute a representation that the ingredient or combination of  
ingredients is present to the exclusion of other ingredients.  
(iii) It is not otherwise false or misleading.  
(e) If an ingredient or combination of ingredients derived from animals, poultry, or  
fish constitutes 95% or more of the total weight of all ingredients of a pet food  
mixture, the name or names of such ingredient or ingredients may form a part of the  
product name of the pet food provided that where more than 1 ingredient is part of  
such product name, then all such ingredient names shall be in the same size, style, and  
color print.  
(f) If an ingredient or combination of ingredients derived from animals, poultry, or  
fish constitutes at least 25% but less than 95% of the total weight of all ingredients of  
a pet food mixture, the name or names of such ingredient or ingredients may form a  
part of the product name of the pet food only if the product name also includes a  
primary descriptive term such as "meatballs" or "fishcakes" so that the product name  
describes the contents of the product in accordance with an established law, custom,  
or usage or so that the product name is not misleading. All such ingredient names and  
the primary descriptive term shall be in the same size, style, and color print.  
(g) Contractions or coined names referring to ingredients shall not be used in the  
brand name of a pet food unless it is in compliance with subdivisions (a), (d), (e), or  
History: 1979 AC.  
R 285.635.5 Brand and product names.  
Rule 5. The brand and product names on commercial feeds, except pet foods, shall  
comply with the following:  
(a) The brand or product name shall be appropriate for the intended use of the feed and  
shall not be misleading. If the name indicates the feed is made for a specific use, the  
character of the feed shall conform therewith. A mixture labeled "dairy feed," for  
example, shall be suitable for that purpose.  
(b) Commercial, registered brand, or trade names shall not be permitted in guarantees  
or ingredient listings.  
(c) The name of a commercial feed shall not be derived from 1 or more ingredients  
of a mixture to the exclusion of other ingredients and shall not be one representing  
components of a mixture unless all components are included in the name. If any  
ingredient or combination of  
is intended to impart a distinctive  
characteristic to the product which is of significance to the purchaser, the name of that  
ingredient or combination of ingredients may be used as a part of the brand name or  
product name if the ingredient or combination of ingredients is listed in the  
ingredient statement and the brand or product name is not otherwise false or  
Page 5  
(d) The word "protein" shall not be permitted in the product name of a feed that  
contains added nonprotein nitrogen.  
(e) When the name carries a percentage value, it shall be understood to signify protein  
or equivalent protein content only, or both, even though it may not explicitly modify the  
percentage with the word "protein." Other percentage values may be permitted if they  
are followed by the proper description and conform to generally acceptable labeling  
practice. When a numeral is used in the brand name, except in mineral, vitamin, or  
other products where the protein guarantee is nil or unimportant, it shall be preceded  
by the word "number," or some other suitable designation.  
(f) Single ingredient feeds shall have a product name in accordance with the  
designated definition of feed ingredients as recognized by AAFCO, unless the  
director designates otherwise.  
(g) The word "vitamin," a contraction thereof, or any word suggesting vitamin may  
be used only in the name of a feed which is represented to be a vitamin supplement, and  
which is labeled with the minimum content of each vitamin declared, as specified in R  
(h) The term "mineralized" shall not be used in the name of  
feed, except for  
"trace mineralized salt." When so used, the product shall contain significant  
amounts of trace minerals which are recognized as essential for animal nutrition.  
History: 1979 AC.  
R 285.635.8 Expression of guarantees.  
Rule 8. (1) The guarantees for crude protein, equivalent protein from nonprotein  
nitrogen, crude fat, crude fiber, and mineral guarantees shall be in terms of percentage by  
(2) Commercial feeds containing 6 1/2% or more of total mineral elements shall  
include in the guaranteed analysis the minimum and maximum percentages of  
calcium (Ca), the minimum percentage of phosphorus (P), and, if salt is added, the  
minimum and maximum percentage of salt (NaCl).Minerals, expect salt (NaCl), shall be  
guaranteed in terms of percentage of the element. When calcium or salt guarantees, or  
both, are given in the guaranteed analysis, that fact shall be stated and conform  
to the following:  
(a) When the minimum is 5.0% or less, the maximum shall not exceed the minimum  
by more than 1 percentage point.  
(b) When the minimum is above 5.0%, the maximum shall not exceed the minimum  
by more than 20% and in no case shall the difference between maximum and  
minimum exceed 5 percentage points.  
(3) Guarantees for minimum vitamin content of commercial feeds and  
supplements shall be stated on the label in milligrams per pound of feed, except that:  
(a) Vitamin A, other than precursors of vitamin A, shall be stated in international  
units (IU) or United States Pharmacopeia (USP) per pound.  
(b) Vitamin D, in products offered for poultry feeding, shall be stated in international  
chick units per pound. Vitamin D for other uses shall be stated in international units  
(IU) or United States Pharmacopeia (USP) per pound.  
Page 6  
(c) Vitamin E shall be stated in international units (IU) or United States  
Pharmacopeia (USP) per pound.  
(d) Guarantees for vitamin content on the label of a commercial feed shall state the  
guarantee as true vitamins, not compounds, with the exception of the compounds,  
pyridoxine hydrochloride, choline chloride, thiamine, and d-pantothenic acid.  
(e) Oils and premixes containing vitamin A or vitamin D, or both, may be labeled to  
show vitamin content in terms of units per gram.  
(4) Guarantees for drugs shall be stated in terms of percent by weight, except:  
(a) Antibiotics present at less than 2,000 grams per ton, total, of commercial feed  
shall be stated in grams per ton of commercial feed.  
(b) Antibiotics present at 2,000 grams or more per ton, total, of commercial feed  
shall be stated in grams per ton of commercial feed.  
(c) Labels for commercial feeds which are to be fed continuously as the sole ration  
containing growth promotion or feed efficiency levels of antibiotics, or both, are not  
required to make quantitative guarantees, except as specifically noted in 21 C.F.R.  
part 121, chapter 1, for certain antibiotics wherein quantitative guarantees are required  
regardless of the level or purpose of the antibiotic.  
(d) The term "milligrams per pound" may be used for drugs or antibiotics in those cases  
where a dosage is given in milligram in the feed directions.  
(5) Commercial feeds containing added nonprotein nitrogen shall be labeled as  
(a) Complete feeds, supplements, and concentrates containing added nonprotein  
nitrogen and containing more than 5% protein from natural sources shall be  
guaranteed as follows:  
Crude protein, minimum,_______%  
(This includes not more than _______% equivalent protein from nonprotein nitrogen)  
(b) Mixed feed concentrates and supplements containing less than 5% protein from  
natural sources may be guaranteed as follows: Equivalent crude protein from nonprotein  
nitrogen, minimum,_______%  
(c) Ingredient sources of nonprotein nitrogen such as urea, di-ammonium phosphate,  
ammonium polyphosphate solution, ammoniated  
or other basic  
nonprotein nitrogen ingredients defined by AAFCO shall be guaranteed as follows:  
Nitrogen, minimum,_______% Equivalent crude protein from nonprotein nitrogen,  
(6) Mineral phosphatic materials for feeding purposes shall be labeled with the  
guarantee for minimum and maximum percentage of calcium, the minimum  
percentage of phosphorus, and the maximum percentage of fluorine.  
History: 1979 AC.  
R 285.635.10 Ingredients.  
Rule 10. (1) The name of each ingredient or collective term for the grouping of  
ingredients shall be the name as defined in the official definitions of feed  
ingredients as published in the official publication of AAFCO, or one approved by the  
(2) The name of each ingredient shall be shown in letters or type of the same size.  
Page 7  
(3) A reference to quality or grade of an ingredient shall not appear in the ingredient  
statement of a feed.  
(4) The term "dehydrated" may precede the name of a product that has been  
artificially dried.  
(5) A single ingredient product defined by AAFCO need not have an ingredient  
(6) When the word "iodized" is used in connection with a feed ingredient, the  
feed ingredient shall contain not less than 0.007% iodine, uniformly distributed.  
History: 1979 AC.  
R 285.635.11 Directions for use; precautionary statements.  
Rule 11. (1) Directions for use and precautionary statements on the labeling of  
commercial feeds and customer-formula feeds  
containing additives, including  
drugs, special purpose additives, or nonnutritive additives, shall:  
(a) Be adequate to enable safe and effective use for the intended purposes by users  
without special knowledge of the purpose and use of the articles.  
(b) Include all information prescribed by applicable regulations under the federal  
food, drug, and cosmetic act, 21 C.F.R. part 121 and part 558.  
(2) Adequate directions for use and precautionary statements are required for  
feeds containing nonprotein nitrogen as specified in R 285.635.12.  
(3) Adequate directions for use and precautionary statements necessary for safe and  
effective use are required on commercial feeds distributed to supply particular dietary  
needs or for supplementing or fortifying the usual diet or ration with a vitamin,  
mineral, or other dietary nutrient or compound.  
History: 1979 AC.  
R 285.635.12 Nonprotein nitrogen.  
Rule 12. (1) Urea and other nonprotein nitrogen products defined in the official  
publication of AAFCO are acceptable ingredients only in commercial feeds for  
ruminant animals as a source of equivalent crude protein and shall not be used in  
commercial feeds for other animals and birds.  
(2) If the commercial feed contains more than 8.75% of equivalent crude protein from  
all forms of nonprotein nitrogen, added as such, or the equivalent crude protein  
from all forms of nonprotein nitrogen, added as such, exceeds 1/3 of the total crude  
protein, the label shall bear adequate directions for the safe use of feeds and a  
precautionary statement:  
The directions for use and the caution statement shall be in type of such size so placed  
on the label that they may be read and understood by ordinary persons under  
customary conditions of purchase and use.  
(3) On labels such as those for medicated feeds which bear adequate feeding  
directions or warning statements, or both, the presence of added nonprotein nitrogen  
Page 8  
shall not require a duplication of the feeding directions or the precautionary  
statements as long as those statements include sufficient information to ensure the  
safe and effective use of this product due to the presence of nonprotein nitrogen.  
History: 1979 AC.  
R 285.635.13 Drug and feed additives.  
Rule 13. (1) Prior to approval of a license application, or approval of a label for  
commercial feed which contains additives (including drugs, other special purpose  
additives, or nonnutritive additives, or both), the manufacturer may be required to  
submit evidence to prove the safety and efficacy of thecommercial feed when used  
according to the directions furnished on the label.  
(2) Satisfactory evidence of safety and efficacy of a commercial feed is achieved  
(a) The commercial feed contains such additives, the use of which conforms to the  
requirements of the applicable regulation in the food additives regulations, 21 C.F.R.  
part 121, chapter 1, or which are "prior sanctioned" or "generally recognized as safe"  
for such use.  
(b) The commercial feed is itself a drug as defined in section 3(h) of the act and is  
generally recognized as safe and effective for the labeled use or is marketed subject to  
an application approved by the food and drug administration under 21 U.S.C. S512.  
History: 1979 AC.  
R 285.635.14 Adulterants.  
Rule 14. (1) For the purpose of section 8(1)(a) of the act, the term "poisonous or  
deleterious substances" includes, but is not limited to, the following:  
(a) Fluorine and any mineral or mineral mixture which is to be used directly for the  
feeding of domestic animals and in which the fluorine exceeds 0.10% for cattle,  
0.30% for sheep, 0.45% for swine, and 0.60% for poultry.  
(b) Fluorine-bearing ingredients when used in such amounts that they raise the  
fluorine content of the total ration exclusive of hay and silages above 0.002% for  
cattle, 0.006% for sheep, 0.014% for swine, and 0.030% for poultry.  
(c) Soybean meal, flakes, or pellets, or other vegetable meals, flakes, or pellets, which  
have been extracted with trichlorethylene or other chlorinated solvents.  
(d) Sulfur dioxide, sulfurous acid, and salts of sulfurous acid when used in or on  
feeds or feed ingredients which are considered or reported to be a significant source of  
vitamin B1 (thiamine).  
(2) Screenings or by-products of grains and seeds containing weed seeds, when used  
in commercial feed or sold as such to the ultimate consumer, shall be ground fine  
enough or otherwise treated to destroy the viability of such weed seeds so that the  
finished product does not contain any viable prohibited weed seeds per pound  
and not more than 90 viable restricted weed seeds per pound. Prohibited and  
restricted weed seeds shall be those defined in Act No. 329 of the Public Acts of  
1965, as amended, being S286.701 et seq. of the Michigan Compiled Laws.  
Page 9  
History: 1979 AC.  
R 285.635.15 Rescinded.  
History: 1979 AC; 2015 AACS.  
R 285.635.16 Rescinded.  
History: 1979 AC; 2015 AACS.  
R 285.635.17 Rescinded.  
History: 1979 AC; 2015 AACS.  
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