Dra ft standard for discussion -TBS  
 
                                                                   
                                                             TBS/AFDC 09 (5548) P3 
 
 
 
 
 
DRAFT  TANZANIA STANDAR D 
 
Maize bran as animal feed  – Specification  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
TANZANIA BUREAU OF STANDARDS  
 
Dra ft standard for discussion -TBS  
 
 Maize bran as animal feed  – Specification   
 
0 FOREWORD  
Maize bran is widely used in the formulation of animal  feeds at both industrial 
and farm levels. This Tanzania standard lays down specifications aiming at 
ensu ring the safety and quality of maize bran produced or traded in the country 
for use in the manufacture of animal  feeds.  
 
In the preparation of this Tanzania  Standard substantial assistance was drawn 
from East African standard , EAS 230  – 2001  Maize bran as  Animal Feed – 
Specification . 
 
In reporting the results of a test or analysis made in accordance with this 
Tanzania  Standard, if the final value observed or calculated is to be rounded off, 
it shall be  done in accordance with TZS 4 (see clause 2).  
 
1.0 SCOPE  
 
This Tanzania  Standard prescribes the requirements, methods of sampling  and 
test for  maize bran as animal feed.     
 
2.0 REFERENCES  
 
The following referenced standards are indispensable for the application of this 
draft standard. For dated references, only t he edition cited applies. For undated 
references, the latest edition of the referenced standard  (including any 
amendments) applies.  
  
TZS 4, Rounding off numerical values . 
TZS 34-1, Animal feeds and feeding stuffs – Sampling and test methods – Part 1: 
Gene ral.  
TZS 34-3, Animal feeds and feeding stuffs – Sampling and test methods – Part 3: 
Microbiological  
TZS 538, Labelling of pre -packaged foods — General requirements  
ISO 6579 -1 – Microbiology of food and animal feeding stuffs – Horizontal method 
for the de tection of Salmonella spp . 
ISO 16654 – Microbiology o f food and animal feeding stuffs – Horizontal method 
for the detection of Escherichia coli   
 
3.0 TERMS AND DEFINITIONS  
For th e purpose of this draft Tanzania standard, the following terms and 
definitions sha ll apply:  
 
maize bran  
coarse portion, composed mainly of the seed coat,  that is separated on 
sieving of the crushed maize grain to yield fine flour usually in a flour 
mill 
 
 
 
 Dra ft standard for discussion -TBS  
 
 4.0 REQUIREMENTS  
4.1 General requirements  
4.1.1 Maize bran shall be free from h armful constituents, metallic objects, 
adulterants, fungal and microbial contamination, insects and rodent infestation, 
and other extraneous matter .  
4.1.2 Also, it should be fr ee flowing without clumps  and discolouration.  
 
4.2 Specific requirements  
4.2.1 maize bran for animal feeding  shall also conform to the requirements 
detailed in Table 1.  
 
Table 1: Requirements for maize bran for animal feed  
 
S/No  Characteristics  Requirem ents Methods of test (See clause 2)  
1 Moisture, %, max  12.0 TZS 34 -1  
2 Crude  protein 
(6.25 X N), %, 
Min 6.0 TZS 34 -1 
3 Crude fibre, %, 
max 12.0 TZS 34 -1 
4 Free fatty acids 
(of crude fat), %, 
max 20.0 TZS 34 -1 
5 Crude fat, %, 
max 8.0 TZS 34 -1 
6 Ash (total), %, 
max 1.0 TZS 34 -1 
NOTE  – All values obtained are calculated from sam ples on dry basis except for 
those dealing with moisture  
 
5 HYGIENE  
6.1 The product shall be prepared under strict hygien ic conditions according to 
TZS 109 (see clause 2) . 
6.2 Maize  bran shall comply with microbiological limits as shown i n Table 4;  
 
Table  2: Status for microbiological tolerance in animal feeds  
S/No.  Microorganism  
 Status  Test methods 
(see clause 2 ) 
1. Salmonella spp  
   Absent  ISO 6579 -1 
2. Escherichia coli  
   Absent  ISO 16654  
 
 
6.0 CONTAMINANTS  
6.1 Pesticide residues  
Maize bran shall  comply with pesticide residue s limits  as prescribed in the Codex 
Alimentarius Commission .  
 Dra ft standard for discussion -TBS  
 
 6.2 Aflatoxins  
Aflatoxins content maximum limit in maize bran shall be 10 ppb.  
 
7.0 SAMPLING  AND TESTS  
7.1 Sampling  
Sampling of maize bran  for animal feeding  shall be done according to TZS 34-1 
and TZS 34 -3 (see clause 2).  
 
7.2 Tests  
Testing of maize bran  for animal feeding  shall be done according to test methods 
prescribed in Table s 1 and 2 . 
8.0 PACKAGING AND MARKING  
 
8.1 Pack aging  
Maize bran for animal  feeding shall b e packed in clean and sound containers 
capable of protecting the product from moisture ingress, contamination and 
spillage during normal handling and transportation. The containers shall be 
sealed/stitched in a manner that the product will be effectively p rotected.  
 
8.2 Marking   
8.2.1 Maize bran containers shall be marked and labelled  in accordan ce with 
TZS 538 (see clause 2).  In addition,  each c ontainer  shall be legibly and indelib ly 
marked with the following information:  
 
a) Name of the product ; 
b) Name and ad dress of the manufacturer;   
c) Batch or code number;  
d) Date of p roduction ; 
e) Net mass ; 
f) Expiry date ; 
g) Country of origin ; 
h) Storage  instructions ; 
i) Guaranteed analysis  
 
8.3 The container may als o be marked with TBS Certification Mark.  
 
NOTE  – The TBS Standards Mark of Q uality may be used by the 
manufacturers only under license  from TBS. Particulars of 
conditions under which the licenses  are granted may be obtained 
from TBS.