This standard specifies a method for the determination of the fat content of animal feeds. The method is applicable to animal feeds except oilseeds and oilseed residues.
For the purposes of this method, the following two categories of animal feeds are classified into the following two categories. Samples of products in category B need a hydrolysis step prior to extraction.
Category B:
- Straight feeds of animal origin including milk products;
- Straight feeds of vegetable origin from which fats cannot be extracted without prior hydrolysis; in particular: gluten, yeast, soya and potato proteins, and heat-treated feeds;
- Compound feeds containing the preceding products in such quantities that at least 20% of the fat content stems from these products.
Category A: animal feeds not mentioned under category B.
For oilseed, a method for the determination of the "oil content" by hexane extraction is specified in ISO 659[1],
Note: For oilseed residues, a method for the determination of the "oil content" by hexane extraction is specified in ISO 734-1[2], whereas a method for the determination of the "oil content" by diethyl ether extraction is specified in ISO 736[3].
Foreword II
1 Scope
2 Normative References
3 Terminologies and Definitions
4 Principles
5 Reagents and Materials
6 Apparatus
7 Sampling
8 Preparation of Test Sample
9 Procedure
10 Calculation
11 Precision
12 Test report
Appendix A (Informative) Results of Interlaboratory Tests
References
