AFDC 9  (1688)  DTZS  
 
 
 
                                                                          
DRAFT  TANZANIA STANDARD  
 
Pig feed premixes  – Specification  
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TANZANIA BUREAU OF STANDARDS                                                                                               
 0 FOREWORD  
 
This Tanzania standard aimed to control safety and quality of pig feed premixes produced or 
traded  in the country for compounding pig feeds. The standard will facilitate  increased  trade 
volumes as well as creat ing a vibrant and competitive animal feed manu facturing industry in 
the country . 
 
In preparation of this Tanzania standard considerable as sistance  was derived from KS 
2540: 2014, Pig feed premixes  – specification  published by the Kenya Bureau of Standards .  
 
In reporting the results of a test or analysis made in accordance with this 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 draft Tanzania standard spe cifies requirements, methods of sampling and test for pig 
feed premixes used as  animal feed.  
  
2.0 References  
 
For the purpose of this draft Tanzania Standard, the following references shall 
apply. For dated references, only the edition cited applies. For undated references, the latest 
edition of the referenced document (including any amendments) applies.  
 
TZS 4 – Rounding off numerical values.  
TZS 34 -1 – Animal feeds and feeding stuffs – Part 1 Sampling and general methods.  
TZS 34 -2 – Animal feeds and fee ding stuffs – Sampling and test methods – Part 2: Minerals 
and trace elements.   
TZS 76 – General method for determination of Arsenic silver diethyldithiocarmate photometric 
method.  
TZS 109 – Food Processing units – code of hygiene – General.  
TZS 268 – Gene ral atomic absorption spectrophotometric method for determination of lead in 
food stuffs  
TZS 538:1999 – Packaging and labeling of foods  
TZS 821 – Animal feeds and feeding stuffs – Preparation of test samples.  
ISO 6867 – Animal feeding  stuffs -- Determinat ion of vitamin E content -- Method using high -
performance liquid chromatography  
ISO 14565 - Animal feeding stuffs -- Determination of vitamin A content -- Method using high -
performance liquid chromatography  
AOAC 944.12 - Folic acid ( pteroyl glutamic  acid) in vitamin preparations.  Microbiological 
methods  
AOAC  945.74 - Pantothenic Acid in Vitamin Preparations - Microbiological Methods  
AOAC 961.14 - Niacin and Niacinamide in Drugs,  Foods,  and Feeds - Colorimetric Method  
AOAC 968.17 - Butylated hydroxy anisole  and butylated hydroxytoluene in cereals. Gas 
chromatographic method  
AOAC 970.65 - Riboflavin ( Vitamin B2) in Foods and Vitamin Preparations  
AOAC 974.30 - Menadione Sodium Bisulfite ( Water -Soluble Vitamin K3) in Feed Premixes - 
Gas Chromatographic Method  
AOAC 996.16 – Selenium in Feeds and Premixes.   
AOAC 2006.03 – Arsenic, Cadmium, Cobalt, Chromium, Lead, Molybdenum, Nickel, and 
selenium in fertilizers  
AOAC952.20 -1960 Cobalamin  (Vitamin B12 Activity) in Vatamin Preparations – 
Microbiological  Methods  
  
  
 
 
3.0   Terms and definitions  
 
For the purpose of this standard, the following terms and definitions shall apply:  
 
3.1 premix  
concentrated mixture of vitamins, trace minerals and diluents . It may contain other 
feed additives such as amino acids  
 
3.2 pig creep -feed  
feed suitable for piglets up to weaning and weighing up to 20 kg body weight  
 
3.3 pig grower feed   
feed intended for growing pigs from approximately eight weeks until they have 
reached a body weight of approximately 55 kg  
 
3.4 pig finishing feed  
feed intended and suitable for fattening pigs weighing over 55 kg body weight and are 
intended for slaughter  
  
3.5 pig breeder feed  
feed intended for breeding pigs of both sexes and of more than 55 kg body weight  
 
3.6 sow 
female pig which  have farrowed at least once  
 
3.7 diluents  
inorganic  substances used to dilute vitamins and trace (micro) minerals  during  manufact uring 
pig feed premixes  
 
4.0   R equirements  
 
4.1 General requirements  
4.1.1 Premixes shall be a fine powder, granular or liquid concentrate.  
4.1.2 Pig feed premix es shall be free from harmful constituents, metallic objects, 
adulterants, moulds, pathogenic microorganisms or pest infestation and free from 
ferment ation , must iness , rancid ity or uncharacteristic odour.  
 
4.2 Specific requirements  
The pi g feed premix es shall contain the nutrients  specified in Table 1 . 
 
 
 
 
 
  
 Table 1: Microminerals , antioxidants  and vitamins  requirements  
S/No.  Parameter  Creep 
feed Grower 
feed Finisher 
feed Breeder 
feed Method 
of test  
Min Min Min Min 
1) Selenium, mg/kg  200 200 200 200 AOAC 996.16  
2) Manganese, mg/kg  30000  30000  20000  20000  TZS 34 -2 
3) Iodine, mg/kg  1000  500 500 1000  TZS 34 -2 
4) Zinc, mg/kg  50000  100000 100000  100000  TZS 34 -2 
5) Iron, mg/kg  100000  80000  125000  80000  TZS 34 -2 
6) Copper, mg/kg  200000  14000  20000  20000  TZS 34 -2 
7) Cobalt, mg/kg  5000  300 300 300 TZS 34 -2 
8) Vitamin A, IU/kg  10000000  10000000  8000000  12000000  ISO 14565  
9) Vitamin B2 (riboflavin ), mg /kg  15000  5000  5000  5000  AOAC 970.65  
10) Vitamin B3 (niacin), mg/kg  15000  15000  15000  15000  AOAC 961.14  
11) Vitamin B5 (pantothenate), 
mg/kg  10000  10000  10000  10000  AOAC 945.74  
14) Vitamin B12 (cobalamin), 
mg/kg  10 10 10 10 AOAC 952.20  
16) Vitamin E, IU/kg  10000  10000  5000  20000  ISO 6867  
17) Vitamin K, mg/kg  2000  2000  1000  3000  AOA C 974.30  
18) Antioxidant (BHT)3), mg/kg  125 125 125 125 AOAC 968.17  
 
5.0 CONTAMINANTS  
 
The products covered by this s tandard shall comply with the maximum limits for heavy metals 
specified in Table 2 . 
 
Table 2: Heavy metal limits  
S/No  Heavy metal  Maxim um Limits  
(mg/kg ) Test Method  
(see clause 2)  
1) Mercury (Hg)  0.1 AOAC 2006.03  
2) Lead (Pb)   15 TZS 268  
3) Arsenic (As)  10 TZS 76  
4) Cadmium (Cd)  10 AOAC 2006.03  
 
 
6.0 HYGIENE  
 
The product shall be prepared under strict hygienic conditions according to  TZS 109 and TZS 
821(see clause 2).   
 
7.0 SAMPLING AND TESTS  
 
7.1 Sampling  
Sampling of the product covered under this standard shall be done according to TZS 34 -1 
and test samples shall be prepared in accordance to TZS 821 (see clause 2).   
 
 
7.2 Tests  
Testing of this product shall be done according to t est methods prescribed in Table 1 and 2 
(see clause 2).   
  
8.0 PACKAGING, MARKING AND LABELLING  
 
8.1 Packaging  
8.1.1  The material shall b e packed in moisture –proof containers, which  are of sufficient 
strength  and sufficiently sealed to withstand handling without tearing, bursting or falling open 
during normal handling and transportation.  
 
8.1.2  The container  shall be sound, clean and free from causal agents of infectious diseases 
and parasites.   
 
8.2 Marking  and labelling  
8.2.1  In addition to marking and labelling requirements prescribed in TZS 538 , pig feed 
premixes  for each container shall be marked to display the following information:  
 
a) Name of the product “Pig feed premixes” ; 
b) Category of animals for which  it is intended;  
c) Name and physical address of the manufacturer;  
d) Country of origin ;  
e) Batch or code number;  
f) Date of manufacture ;  
g) Net weight in metric units;  
h) Expiry date;  
i) Directions for use and storage conditions;  
j) List of ingredients  
 
 
8.3 The container may also be marked with TBS Certification Mark.  
NOTE  – The TBS Standards Mark of Quality may be used by the manufacturers 
only under licence from TBS. Particulars of conditions under which the licences 
are granted may be obtained from TBS.