RESUMEN
The present study was conducted to investigate the effect of different jojoba meal as a replace of soybean protein and to detect the histopathological changes in some organs of Japanese quail [one week old] for 5 weeks. The present study included two experiments, the first aimed to investigate the incorporation of treated jojoba meal seed [bentonite + autoclaving + fungus] in Japanese quail diets as replacer to soybean meal protein and to detect the histopathological changes in some organs of the Japanese quail. The treated jojoba meal was incorporated in the experimental diets to replace 0 [control]; 4 [T[1]]; 8 [T[2]] and 12% [T[3]] of soybean meal protein. The second experiment, dietary treatment included the control diet [The same control of experiment I] and groups 2 [UT[1]], 3[UT[2]], 4 [UT[3]], 5 [UT[4]], which were supplied with untreated jojoba meal at 0.0, 0.2, 0.4, 0.6 and 0.8% levels, respectively. Observations of the present study showed that liver of T[2] group revealed ruptured endothelial lining of the central vein, and T[3] group showed elongated walls of the bile ducts. Ileum of T[2] group showed highly thickened muscle layer and ileum of T[3] group showed distorted tissue. Kidney of T[2] group showed congested inters tubular spaces and T[3] group showed normal convoluted tubules with congested and dilated blood vessels. Testis of T[2] and T[3] groups showed hypocellularity of cells of the spermatognic layers with absence of mature sperms. Ovary of T[3] group showed somewhat normal mature ovum with reduced internal content. Results of experiment II showed that the liver tissue was normal.Ileum of birds of UT[3] and UT[4] groups showed somewhat normal appearance. Kidney of UT[3] group showed that some cells of the convoluted tubules were faintly stained with hemorrhagic areas. Testis of UT[3] and UT[4] groups showed decreased Leydig cells with absence of mature sperms and increased number of primary spermatocytes. Ovary of UT[3] group showed reduced stroma, and those of UT[4] showed highly reduced storma in the cortex and medulla of the ovary with malformed mature follicles and irregular membranes, but somewhat normal growing follicles. It is clear that 4% [At the level 1.55] of the treated jojoba meal and 0.4% untreated meal give the best results