コリデール種緬羊の毛胞群に関する研究-2-
スポンサーリンク
概要
- 論文の詳細を見る
The present study has been carried out to observe changes of the hair follicle population in the Corriedale sheep skin in relation to lamb growth. The animals examined were 4 Corriedale lambs and a small patch of skin was taken from the shoulder, side and the thigh region of each lamb at 1, 3, 6, and 9 months after birth. Each skin sample was prepared histologically and the differences of the follicle densities, of the follicle bundle densities and of the diameters of the follicles due to different individuals and also to different body regions and ages of lambs, were studied.The results obtained were as follows;(1) The follicle density and the follicle bundle density in the skin of Corriedale sheep were found to vary according to ages of lambs. The maximum values of density were observed at 1 month or 3 months of age and the decreased values after these months until 9 months after birth.(2) The relative values of the follicle density and the follicle bundle density in different body regions of lambs differed in different individuals and of definite order in the values was found.(3) The mean diameters of the follicles varied according to individuals, to body regions and also to ages of lambs. They showed the highest values at 3 or 6 months after birth, and the decreased values after these months until 9 months after birth.The larger diameters were found at the side or thigh region, and the smaller at the shoulder region.(4) When the diameters of the primary follicles were compared with those of the secondary follicles of different body regions and also of different ages after birth, a tendency that the former was larger than the latter was observed.
- 社団法人 日本畜産学会の論文