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This article presents the scientific results focused on investigating the impact of the ZooBioR remedy, obtained from Spirulina platensis, tested on young hens, in the first technological phase of laying. The research was initiated on young hens, of 24 weeks old, belonging to the “Hy-Line” hybrid, bred in identical conditions of nutrition and maintenance. The hens in the experimental group received daily food supplemented with ZooBioR, in proportion of 10 mg active substance/kg feed. During the study the birds were monitored, and periodically were determined body temperature, frequency of respiratory movements. For haematological investigations, from birds was collected blood from the axial veins and, as the case may be, from the jugular veins, in standard model test tubes. It has been established that the ZooBioR remedy is well tolerated by young hens and exhibits anti-stress and adaptive properties. In addition, the tested product has a positive evolution on the hemogram, increases the natural body resistance, inducing at the end of the study a tendency of increase of platelets in blood.