This study was performed to assess the nutritional value of specific tree species (laurus nobilis, albizia julibrissin, glycyrrhiza glabra, salix alba, robinia pseudoacacia, liquidambar orientalis, juniperus communis, quercus coccifera, cedrus libani, arbutus andrachne) growing in different regions Kahramanmaras, besides gas production leaves and their extracts at various dose levels (0.6, 1.2 ...