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OCR for page 31
Composition of
Feecis
Tables 12, 137 and 14 present the composition of some fur ani-
mal feed ingredients. * Nutrient concentrations are organized
as follows:
Table 12 Composition of Important Fur Animal Feeds.
Data Expressed As-Fed and Dry (100 To Dry
Matter) .
Table 13 Amino Acid Composition of Some Common Fur
Animal Feeds. Data Expressed on an As-Fed and
Dry Basis (Moisture Free).
Table 14 Composition of Mineral Supplements. Data Ex
pressed As-Fed and Dry (100 % Dry Matter).
INTERNATIONAL NOMENCLATURE
In Tables 12, 13, and 14, names of the feeds are based on a
scheme proposed by Harris et al. (1980, 1981~. The names are
designed to give a qualitative description of each product,
where such information is available and pertinent. A com-
plete name consists of as many as eight facets, separated by
commas and written in linear form. The facets are as follows:
Origin (or parent material)
Species, variety, or kind
Part eaten
Processtes) and treatments to which product has been sub-
jected
Stage of maturity
Cutting or crop
Grade or quality designations
Classification
INTERNATIONAL FEED NUMBER
Each feed name is assigned a five-digit "International Feed
Number (IFN)" for identification. The numbers are assigned
*The tables on feed composition (Tables 12, 13, 14) were compiled by
the National Research Council's Subcommittee on Feed Composition
of the Committee on Animal Nutrition.
consecutively as new feed names are created. These numbers
are particularly useful when calculating animal diets for max-
imum profit. The feed class number is placed in front of the in-
ternational feed number when making up feed composition
tables, and the entire six-digit number is entered in a column
following the international feed name (Tables 12, 13, 14~.
The following list shows how three feeds are described:
Facets and Classifica-
tion of the Interna-
tional Feed Name
Feed Feed
No. 1 No. 2
Feed
No. 3
Origin (or parent material) Fish Soybean Wheat
Breed or kind herring soft white
winter
Part eaten
Processtes) and treat
mentts) to which prod
uct has been subjected
Grade or quality designa
tions
Classification; first digit
in front of the Interna
tional Feed Number
(IFN)
INN
whole
fresh
seeds
meal solv
extd
44~o protein
grain
(5) protein (5) protein (4) energy
supplements supplements feeds
5-01-999 5-04-604 4-05-337
Thus, the names of the three feeds are written as follows:
No. 1: Fish, herring, whole, fresh
No. 2: Soybean, seeds, meal solv extd, 44 % protein
No. 3: Wheat, soft white winter, grain
Feeds of the same origin (and the same breed or kind, if one of
these is stated) are grouped into eight classes on the basis of
their composition and the way they are used in formulating
diets:
Code
1. Dry forages and roughages
2. Pasture, range plants, and forages fed green
31
OCR for page 32
32
Nutrient Requirements of Mink and Foxes
3. Silages
4. Energy feeds
5. Protein supplements
6. Minerals
7. Vitamins
8. Additives
Feeds that in the dry state contain on the average more than 35
percent cell wall or 18 percent crude fiber are classified as pro-
tein supplements. Products that contain less than 20 percent of
protein and less than 35 percent cell wall or 18 percent crude
fiber are classified as energy feeds. The international feed
names may vary slightly in each report because changes are
made as more is known about a given feed, or the Association
of American Feed Control Officials or the Canada Feed Act
may change the name or definition of a feed. However, if the
feed is the same, the international feed number remains the
same even though the name changes.
DATA
The data were primarily taken from the International Feed-
stuffs Institute, Utah State University data bank. Metaboliz-
able energy and protein digestibility values were taken from
unpublished data of Travis.* The analytical data are ex-
pressed in the metric system and are on an as-fed and dry basis.
Analytical data may differ in the various NRC report because
the data are updated for each report. Individual feed samples
may vary widely from averages in the table. Variations are in-
fluenced by factors such as crop, variety, climate, soil, and
length of storage; therefore, the values given should be used
with judgment.
*Hugh F. Travis, Agriculture Research Service, U.S. Department of
Agriculture, 321 Morrison Hall, Cornell University, Ithaca, New
York, 14850.
Representative terms from entire chapter:
feed name
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