Digestarom® DC Power is a mixture of five individual compounds; carvacrol, thymol, D-carvone, methyl salicylate and L-menthol. The blend is encapsulated with a hydrogenated oil. The product is intended for use in poultry.

Manufacturer´s main claim
Supports gut microbiota health
Improves feed intake
Supports gut protection

Technical specifications Digestarom® DC Power

EU category Zootechnical additive
Functional group of additives Other zootechnical additives
Composition L-menthol: 30-55 mg/g
D-carvone content: 3-6 mg/g
Carvacrol: 120-160 mg/g
Thymol: 1-3 mg/g
Methyl salicylate: 10-35 mg/g
Amorphous silicate: 100 mg/g
Hydrogenated vegetable oil: 700 mg/g
EU code 4d20
EU approval (content mg/kg complete feed) Chickens for fattening: 75 - 125
Chickens reared for laying: 75 - 125
Minor poultry species reared for laying: 75 - 125
End of period of EU authorisation 30 July 2030
Safety and handling It is recommended to use protection for the skin and eyes.
Storage stability Three batches of the product were stored for 6, 12 or 18 months at either 22°C or 37°C. More than 87 % of the active substances were detected at the low temperature whereas more than 83% was detected at the higher temperature.

The product was added to a vitamin/mineral premix and stored for 6 months at 22°C in sealed containers. The content of active substances was measured after 3 and 6 months, respectively. After 3 months of storage, the concentration of thymol, carvacrol and methyl salicylate remained unchanged whereas the concentration of D-carvone and L-menthol was reduced by 20 %. After 6 months of storage, the residual activity of carvacrol and methyl salicylate was above 80 %, however, the concentration of the remaining substances was reduced to approximately 60 of the initial values.

A single batch of the product was added to mash feed for chickens and stored in a sealed container at 22°C for 5 months. After 5 months of storage, the rate of recovery was at least 85 % of the initial values.
Heat stability Mash feed supplemented with the additive was pelleted at either 85°C or 95°C. Samples of the mash feed and the pelleted feed were analysed for the active substances. Immediately after pelleting the rate of recovery was above 90 % at 85 °C and above 80 % at 95°C. The subsequent 3 months storage reduced the recovery of the compounds by a further 10 %.
Physical state of product and appearance The product has an off-white colour with flowing properties. Bulk density is 0.53 kg/litre. Dusting potential is measured to a value of 0.03 g/m3.
Distribution in feed Homogeneity of the product when added to mash feed for chickens, was measured. Coefficient of variance was c. 10 % for all compounds except methyl salicylate which was 23.7 %. 
Producer Biomin

List of references

EFSA (2019). Safety and efficacy of Biomin® DC-P as a zootechnical feed additive for chickens for fattening, chickens reared for laying and minor avian species to the point of lay. EFSA Journal, 2019;17(6):5724

EU (2020).
Commission implementing Regulation (EU) No 2020/996 of 9 July 2020 concerning the authorisation of the preparation of carvacrol, thymol, D-carvone, methyl salicylate and L-menthol as a feed additive for chickens for fattening, chickens reared for laying and minor poultry species reared for laying (holder of the authorisation Biomin GmbH). Official Journal of the European Union. L221/87-89