SEASONAL CHANGES OF THE HISTOLOGY AND HISTOCHEMISTERY OF THE HAIR FOLLICLES OF BALADI GOATS IN EGYPTIAN DESERT AREAS, | ||||
| Journal of Animal and Poultry Production | ||||
| Article 1, Volume 27, Issue 6, June 2002, Page 3721-3736 PDF (4.41 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jappmu.2002.255551 | ||||
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| Authors | ||||
| Aisha S. Abdou,1; M. M. EI-Ganaieny1; F. I. Khattab2; S. A. Hekal1 | ||||
| 1Desert Research Center, Matareya, Cairo, Egypt | ||||
| 2Faculty of Science, Ain Shams University | ||||
| Abstract | ||||
| Skin biopsy samples were collected from twenty adult does of Saladi goats, randomly chosen from the main flock raised in Maryout Research Station of the Desert Research Center, at seasonally intervals representing spring, summer, autumn and winter in order to study the histological and histochemical changes in the hair follicle as well as the effect of different climatic conditions on their activities. In general, there was a significant effect of different seasons on the follicle dimensions. The external diameter of both follicle types was most affected by seasonal variations followed by internal diameter and the least affected was follicle wall thickness. There was an increase in the external and internal diameters of both primary and secondary follicles found in autumn and spring, while follicle wall thickness showed a noticeable decrease in summer irrespective of follicle types. The histochemical analysis of the hair follicles showed a high follicle activity in summer in the primary follicle and in autumn in the secondary ones and this could be mainly attributed to the coat type which the animals need to adapt themselves to the changing seasons by controlling the character of the hair coat and development of a suitable coat for different seasons. | ||||
| Keywords | ||||
| Goats; hair follicles; seasonal effect; skin histology; histochemistry | ||||
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