[Menadione and its stimulant effect on the growth of animals].

This paper deals with the stimulatory effect of the compound 2-methyl-1,4-naphthoquinone, Menadione (vit. K3), in young chicken, during the growing period. That's the case of other products like Bacitracin, Actinomycin D and Terramycin, whose hormetic activity is supplanted by the referred Menadione. Authors present the experimental data with analytical discussion of the results.