Indian Standard SPECIFICATION FOR WHEAT BRAN
(First Revision)

FOREWORD

0.1 This Indian Standard (First. Revision) was adopted by the Indian Standards Institution on 17 September 1971, after the draft finalized by the Animal Feeds Sectional Committee had been approved by the Agricultural and Food Products Division Council.

0.2 This Indian Standard was first issued in 1962. However, in view of the introduction of the newer varieties of wheat for cultivation in the country it had become necessary to review the provisions stipulated in tile existing Indian Standard for the various characteristics of wheat bran. In t-his revision the characteristics for crude fat, total ash and husk for foreign food grains have been removed. The limits for the crude protein and crude fibre have been amended. It is expected that this revision would help the feed manufacturing organizations and others in procuring wheat bran of the right quality.

0.3 This standard contains clause 3.1, which calls for an agreement between the purchaser and the vendor.

0.4 For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS: 2-1960. The number of significant places retained in 'the rounded off value should be the same as that of the specified value in this.

Rules for rounding off numerical values (revised).

1. SCOPE
1.1 This standard prescribes the requirements and the methods of test for wheat bran for use as livestock feed.

2. REQUIREMENTS

2.1 Description - Wheat bran shall be the outer coating with the minimum of adhering endosperm of the wheat kernel separated from effectively cleaned wheat in the usual process of milling. The material shall be free from musty and stale odour or sourness and from lumps, dirt and extraneous matter including iron or other metallic pieces. It shall be free from fungus or insect infestation.

2.2 The material shall not contain more than 30 percent by weight of fine powder as determined by sieving 50 g of the material on 500-micron IS Sieve (aperture 0.500 mm) for 2 minutes, weighing the powder passing through the sieve and calculating as percentage of the material.
NOTE - If 500-micron IS Sieve (see IS: 460-1962) is not available, BS Test Sieve 30 or Tyler Test Sieve 32 or ASA Test Sieve 35 (same as ASTM) may be used.
Specification for test sieves (revised).

2.3 The material shall also conform to the requirements prescribed in Table 1.

TABLE 1 REQUIREMENTS FOR WHEAT BRAN

Sr. No.	Characteristics	Requirements	Method of Test (Ref to Appendix in IS: 2052-1968
1	Moisture, % by weight, Max	12.5	B
2	Crude Protein (nitrogen x 6.25), % by weight, Max	13.0	C
3	Crude fibre, % by weight, Max	12	D
4	Acid insoluble ash, % by weight, Max	0.25	E

Note - thee requirements for items 2 to 4 are on moisture-free basis.
Specification for compounded feeds for cattle (first revision)
3. PACKING AND MARKING

3.1 Packing - Unless agreed otherwise between the purchaser and the vendor, the material shall be packed in sound jute bags. The mouth of each bag shall be either machine-stitched or rolled over and hand-stitched with strong jute twine.

3.2 Marking - Each bag shall be marked with4he following information:

• Name of the material
• Name of the manufacturer
• Guaranteed composition
• Batch or code number
• Minimum net weight in kg.

3.2.1 The bag may also be marked with the IST Certification Mark.
Note - The use of the ISI Certification Mark is governed by the provisions of the Indian Standards Institution (Certification Marks) Act and the Rules and Regulations made thereunder. The ISI Mark on products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well-defined system of inspection, testing and quality control, which is devised and supervised by ISI and operated by the producer. ISI marked products are also continuously checked by ISI for conformity to that standard as a further safeguard. Details of conditions under which a license for the use of the ISI Certification Mark may be granted to manufacturers or processors may be obtained from the Indian Standards Institution.

4. SAMPLING
4.1 Representative samples of the material for tests shall be drawn according to the method prescribed in Appendix F of IS: 2052-1968.
Specification for compounded feeds for cattle (first revision).

4.2 Criteria for conformity
4.2.1 A lot shall be considered as conforming to the specification, when:

1. Each of the test results for crude protein and acid insoluble ash satisfy the requirements as specified in Table 1
2. The test results on the composite sample satisfy the requirements for the remaining characteristics specified in Table 1.

4.2.2 If one or more test results do not satisfy the requirements for crude protein and acid insoluble ash, the following procedure shall be adopted for determining the conformity of the material for these two characteristics:
Calculate the mean and range as follows:
Mean (X) = Sum of the test results
Number of test samples
Range (R) = difference between the maximum and the minimum values of the test results.
The requirements for crude protein and acid insoluble ash shall be considered as fulfilled if:
X - 0.4 R is equal to or greater than the requirements for crude protein, and
X + 0.4 R is less than or equal to the requirement for acid insoluble ash.

5. TESTS
5.1 Tests shall be carried out as prescribed in the relevant appendices of IS: 2052-1968 specified in column 4 of Table 1 with the exception that B-1.1 of IS: 2052-1968 which prescribes the grinding of the material before analysis, is not applicable.
Specification for compounded feeds for cattle (first revision).

5.2 Tests for crude protein and acid insoluble ash shall be conducted individually on each of the samples constituting a set of test samples while the tests for the remaining characteristics specified in Table 1, shall be conducted on the composite sample.

5.3 Pure chemicals and distilled water (IS: 1070-1960) shall be employed in tests.
Note- Pure chemicals shall mean chemicals that do not contain impurities, which affect the experimental results.
Specification for water, distilled quality (revised).