A COMPARATIVE TOPOGRAPHICAL AND HISTOLOGICAL STUDY OF HAIR AND HAIR FOLLICLES OF SHAMI GOAT AND BLACK GOATS IN THE MOSUL PROVINCE
2018
A. N. Abduljawaad | Alhaaik A. G | M. H. Abdulraheem
This study was conducted to prepare a database about hair follicles of Shami goat skin and to compare itwith that of Black goat. To achieve this goal, a comparative topographic histological study of 10 areas ofShami goat skin and similar areas of the Black goat skin was performed. Samples of 10 male animals (5)Shami goats and (5) Black goats used in this study were clinically healthy, 1-2 years old . Hair follicles inmost studied areas were of the composite type of primary and secondary hair follicles in both animals exceptfor the ventral surface area of the tail where primary follicles were present only. The length of hair folliclesin Black goats of all studied areas was longer than that of Shami goats. However, the depth of hair folliclesin skin of Shami goats was significantly lower than that of Black goats, indicating that the angle of hairfollicles in Shami goats is greater than those of Black goats. The follicles in Black goats were larger thanthose of Shami goats, indicating that the Shami goats hair was softer than that of Black goats. Shami goatshair had softness more than that of Black goat' hair. This softness is attributed to the increases the ratio ofsecondary hair follicles to primary hair follicles in Shami goats in most studied areas compared with those inBlack goats. The follicular arrangement was studied in both species, however, the triangular arrangement ofthe follicles was predominant in both animals except for the ventral area of the tail, where the trio folliculararrangement appeared only in the Shami goats and did not appear in the Black goats where they spreaduniformly and not in groups.
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