Standardized ethanol extracts of Allium sativum (garlic), Glycyrrhiza glabra (licorice), Plantago major (plantain) and Hippophae rhamnoides (sea buckthorn) were assessed for their effects on cellular immunity in laying hens. Birds (n = 25) had blood samples taken and both specific and non-specific immune cell responsiveness were evaluated by a leukocyte proliferation assay, carbon clearance test and SRBC phagocytosis in monocyte-derived macrophage

Un efectiv de 60 puicute si 40 cocosei din rasa Rhode Island a fost structurat in loturile L1, L2, L3. Pasarile lotului L1 au fost trecute la varsta de 16 saptamani de la 8 la 14 ore lumina si furajate cu nutret caracteristic pasarilor adulte. Aceasi interventie s-a realizat la varstele de 18 si 20 saptamani formandu-se loturile L2 si L3. Modificarile din sfera genitala s-au evidentiat bisaptamanal urmarindu-se caracteristicile fenotipice, greutatea