An improvement to a needle for unnoculating nutrients into the inner environment of fertile eggs represents an inventive solution in the field of poultry farming, in particular in the sector of poultry breeding, specifically in the industry of equipment for the application of fluids into fertile eggs, in order to render nutrition feasible and effective in the pre-hatching stage of fertile eggs (Ov), being particularly useful for protecting the embryo, avoiding the direct intramuscular injection of nutrient into the embryo. An improved injection tool (4) has been designed for that purpose in the form of an injection needle with a rounded free end (42) and with a plurality of openings (43) next to same, through which the nutrient is injected, while the rounded free end (42) prevents piercing of the embryo (Em).
