Effects of Dietary Vermi-humus in Comparison to Virginiamycin on Performance and Small Intestinal Morphometric Parameters in Japanese Quails

This experiment was conducted in order to compare the effects of different levels of humic acid and virginiamycin on performance and intestinal morphometeric parameters of Japanese quails. A number of 280 Japanese quails were allocated to 7 treatments with 4 replicates and 10 birds in each replicate in a randomized complete block design. Birds of group 1 as a control were fed by control diet. For 2 to 6 treatments, six levels of vermi-humus (0, 0.2, 0.4, 0.6, 0.8, and 1%) was considered and birds of treatment 7 were fed by 0.15% virginiamycin supplemented diet. The lowest and the highest feed conversion ratio was related to 0.6 % vermi-humus and virginiamycin, respectively. Dietary supplemention of different levels of vermi-humus did not influenced the small intestine absolute and it’s relative length. The longest villus height in duodenum, jejunum and ileum were observed in 0.6%, 0.4% and 1% vermi-humus, respectively and the shortest villus height in duodenum and ileum was related to birds that fed virginiamycin (P