A new finished feed for domestic pets is proposed, containing at least one guanidinoacetic acid component as the active component with regard to nutritional physiology. The new finished feed which preferably has a water content of >8% by weight, can be produced in an extremely economical manner, wherein the main component has a significantly higher stability during passage through the gastrointestinal tract and is therefore only converted into creative under physiological conditions. For this reason the guanidinoacetic acid is also utilized to a high degree by the target group which is in particular cats and dogs.
