Dra ft standard for discussion -TBS   AFDC 9 (271) CD 3 
 
                          
                                                                            
 
 
 
DRAFT  TANZANIA STANDAR D 
 
Dried insect products for compounding  animal feeds – 
Specification  
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
TANZANIA BUREAU OF STANDARDS  
Dra ft standard for discussion -TBS   AFDC 9 (271) CD 3 
 
 0 FOREWORD  
 
Dried insects have recently been  used for feeding animals and fish. To 
encourage the use of dried  insects in  formulation of animal  feeds as a protein 
source , it is necessary to develop a standard . This Tanzania standard lays d own 
specifications aiming at ensuring the safety and quality of dried insect products 
produced or traded in the country for manufactur ing of animal  feeds.  
 
In the preparation of this Tanzania  Standard substantial assistance was drawn 
from Uganda  standard , US 1712  – 2017  Dried insect products for compounding 
animal feeds – 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 b e done in accordance with TZS 4 (see clause 2).  
 
1.0 SCOPE  
 
This Tanzania  Standard prescribes the requirements, methods of sampling  and 
test for  dried insect products  as ingredients for compounding animal feed.     
 
2.0 NORMATIVE REFERENCES  
 
The following referen ced standards are indispensable for the application of this 
standard. For dated references, only the edition cited applies. For undated 
references, the latest edition of the referenced standard  (including any 
amendments) applies.  
  
TZS 4  – Rounding off num erical values . 
TZS 76 – General method for determination of Arsenic silver 
diethyldithiocarbamate photometric method.  
TZS 109 – Food Processing units – code of hygiene – General.  
TZS 122 -1 – Microbiology of food an d animal feeding stuffs – Horizontal metho d 
for the detection of Salmonella spp . 
TZS 268 – General atomic absorption spectrophot ometric method for 
determination of lead in food stuffs  
TZS 538  – Labelling of pre -packaged foods — General requirements  
TZS 730 -1 – Microbi ology of food and animal feedi ng stuffs – Horizontal method 
for the detection of Escherichia coli   
TZS 799 – Food stuffs – Determin ation of aflatoxin B1 and the total content  
TZS 821  – Animal feed ing stuffs – Preparation of test samples  
TZS 2044  – Animal feeding stuffs – Determinatio n of ash insoluble in 
hydrochloric acid  
TZS 2470  – Animal feeding stuffs - Determination of lysine, methionine and 
threonine in commercial amino acid products and premixtures  
TZS 2472  – Animal feeding stuffs – Deter mination of acid detergent fibre (ADF) a nd acid 
detergent lignin (ADL) Cont ents 
TZS 2473 , Animal feeding stuffs - Determination of crude ash  
TZS 2476  – Animal feeding stuffs -Determination of fat content  Dra ft standard for discussion -TBS   AFDC 9 (271) CD 3 
 
 TZS 2478  – Animal feeding stuff s – Determination of moisture and other volatile 
matter conte nt 
TZS 2480  – Animal feeding stuff s - Determination of nitrogen content and 
calculation of crude protein content - Part 1: Kjeldahl method  
TZS 2482  – Animal feeding stuffs, animal product s, and faeces or urine - 
Determination of gross calorific value - Bomb calorimeter method  
TZS 2487  – Animal feeding stuffs - Determination of the contents of calcium, 
copper, iron, magne sium, manganese, potassium, sodium and zinc - Method 
using atomic absorption spectrometry  
TZS 2488  – Animal  feeding  stuffs – Sampling  
 
3.0 TERMS AND DEFINITIONS  
For the purpo se of this Tanzania standard, the following terms and definitions 
shall apply:  
 
3.1 dried insect products   
Include  processed  nymphal, larval, pupal stages and/ or adult insects , 
for use as an animal feed ingredient  
 
3.2 who le insects  
insect material  presented in their natural form after primary processing 
to minimize microbiological contamination  and moisture  
 
3.3 ground insec t product  
insect material  presented as meal, pellets or crumbs after primary 
processing to minimize microbiological contaminat ion and moisture.  
  
3.4 defatted insect product  
insect material presented as whole insect, meal, pellets or crumbs that 
has underg one additional processing to remove a portion of the fat 
content.  
 
4.0 REQUIREMENTS  
4.1 General requ irements  
Insect products s hall be free from  
 Toxic substances  
 Adulterants, extraneous material and objectionable matter  
 Infestation and contamination.  
 
4.2 Specific requirements  
Insect products shall conform to the specific requirements specified in Table 1.  
 
 
 
 
 
 
 
 Dra ft standard for discussion -TBS   AFDC 9 (271) CD 3 
 
 Table 1: Speci fic requirements for dried insect products for animal feed  
S/No  Parameters 
(DM)  Requirements  Methods of 
test (See 
clause 2)  Whole or 
ground 
insects 
(Low 
protein)  Whole or 
ground 
insects 
(High 
protein)  Defatted 
insect 
meal  
1) Energy, ( DE) 
Kcal/ kg, min  2842  2842   TZS 2482  
2) Moisture 
content, %, 
m/m, Max  13 13 13 TZS 2478  
3) Crude protein, 
%, m/m, min  25 40 45 TZS 2480  
4) Crude f at, %, 
m/m, max  40 30 12 TZS 2476  
5) Crude fibre, 
%, m/m, max  17 17 20  TZS 2472  
6) Total ash , %, 
m/m, max  15 15 20 TZS 2473  
7) Acid insoluble 
ash, %, m/m, 
max 4 4 4 TZS 2044  
8) Calcium, %, 
m/m, max  5 5 5 TZS 2487  
9) Phosphorus , 
%, m/m, m in 0.6 0.6 0.6 ICP/AAS  
10) Lysine , %, 
m/m, m in 1.0 2.4 1.0 TZS 2470  
11) Methionine , %, 
m/m, m in 0.4 0.7 0.4 TZS 2470  
12) Zinc, %, m/m, 
max 0.02 0.02 0.02 TZS 2487  
13) Manganese , 
%, m/m, max  0.01 0.01 0.01 TZS 2487  
 
5 HYGIENE  
5.1 Dried insect products  shall be prepared under strict hygienic conditions 
according to TZS 109 (see clause 2).  
5.2 Dried ins ect pro ducts  shall comply with microbiological limits as shown in Table 2;  
 
Table 2: Status for microbiological tolerance in animal feeds  
S/No.  Microorganism  
 Status  Test methods ( see 
clause 2 ) 
1. Salmonella spp /25g 
   Absent  TZS 122 -1 
2. Escherichia c oli, cfu/g 
   Absent   TZS 730 -1  
 Dra ft standard for discussion -TBS   AFDC 9 (271) CD 3 
 
 6.0 CONTAMINANTS  
6.1 Pesticide residues  
Dried insect products  shall comply with pesticide residue s limits  as pr escribed in 
the Codex Alimentarius Commission .  
 
6.2 Aflatoxins  
Total  aflatoxins content maximum limit in dried insec t products  shall be 20 ppb 
when tested in accordance with TZS 799 . 
 
6.3 Heavy metal s 
Maximum limits for heavy metals shall be as specified  in Table 3. 
 
Table 3: Heavy metal  
S/No.  Heavy metal  Maximum limits 
(mg/kg, max)  Method of test  
1) Mercury (Hg) 0.1 ICP/AAS  
2) Lead (Pb)  15 TZS 268  
3) Arsenic (As)  10 TZS 76  
4) Cadmium (Cd)  10  ICP/AAS   
 
7.0 SAMPLING  AND TESTS  
7.1 Sampling  
Sampli ng of dried insect products  for animal feeding  shall be done according to 
TZS 2488  and TZS 821 (see clause 2).  
 
7.2 Tests 
Testing of dried insect products  for animal feeding  shall be done according to test 
methods prescribed in Table s 1, 2 and 3. 
8.0 PACK ING, MARKING  AND LABELLING  
8.1 Pack ing 
Dried insect products  for animal  feeding shall be packed in clean and sound 
containers  capabl e of protecting the product from moisture ingress, 
contamination and spillage during normal handling and transportation. The 
containers shall be s ealed/stitched in a manner that the product will be effectively 
protected.  
 
8.2 Marking  and labelling  
8.2.1  Dried insect products  containers shall be marked and labelled  in 
accordan ce with TZS 538 (see clause 2).  In addition,  each c ontainer  shall be 
legib ly and indelibly marked with the following information:  
 
a) Name of the product  as Dried insect product ; with the  species name s of 
insect s used in close proximity;  
b) Name and address of the manufacturer;   
c) Batch or code number;  
d) Date of production;  Dra ft standard for discussion -TBS   AFDC 9 (271) CD 3 
 
 e) Net mass ; 
f) Expiry date ; 
g) Country of origin ; 
h) Instructions  for storage and handling ; 
i) Guaranteed analysis  
 
8.3 The contain er may also be marked with TBS Certification Mark.  
 
NOTE  – The TBS Standards Mark of Quality 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.  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 Dra ft standard for discussion -TBS   AFDC 9 (271) CD 3 
 
 Annex A  
(informative)  
 
 
Potential species for production of insect products  
 
A.1 Insect products may be produced from  
i) Black soldier fly larvae and pupae ( Hermetia illucens ) 
ii) Crickets adults and nymphs (Family Gryllidae);  
iii) Blowfly/House fly larvae and pupae (Calliphioridae/Muscidae);  
iv) Grasshopper adults and nymphs (Sub -order Caelifera);  
v) Silkworm pupae (Bombyx  spp.);  
vi)  Mealworm larva e and pupae (Tenebriospp);  
vii) Termite adults (Termitidae);  
viii) Lakefly adult larvae and pupae (Chironomi dae, Chaobo ridae, 
Ephemeroptera),  
ix) Blue/green Calliphora fly (adults and lavae)  
x) Cockroach adult and nymph (Blattelidae) among others.  