الفهرس 
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Abstract
Crossbreeds of Oseimi and Barki sheep containing 25% German Mutton Merino blood were tested for carpet wool production. The study comprised 15 ewes of each of Barki, Ossifui and Merino purebreds, 12 ewes 1/4 M.B. and 23 ewes of the Merino Ossimi. Physical measurements and histological measurements of primary and secondary follicles were determined microscopically. Significant increase in grease fleece weights of 1/4M.B. and 1/4 M.O. were noticed compared tm their subsequental local grandparents. Heterosis was also detected in 1/4M.O. and 1/4M.B. comparatively with their expected grandparent means. Non-significant differences, however, were fond between the mean clean fleece weights except for Barki which was significantly lower than all other breed groups. An increase in grease percentage was noticed in* M.O. and 1/4M.B. compared to their respective local grandparents, although not significant in the former and significant in the later. Similarly a significant decrease in the yield was recorded for both 1/4 M. o. and 1/4 M.B. compared to their respective local grandparents. Fibre diameter and length were significantly decreased in the crossbreds relative to their local grandparents. Thus finer fleeces were exhibited by both 1/4 M.B. and1/4 M.O. but with less variability in the former and greater in the later. The two crossbreds, however, were not significantly different from each otheir iil fibre length and number of crimps per inch, while they differed significantly in the fibre diameter.