摘要
本文对山东泗水裘皮羊的四个年龄组（小毛、中毛、大毛和６月龄）２４只羔羊的皮肤组织结构进行了系统的研究。结果表明：各年龄段表皮厚度比较恒定，在１９～２１μｍ之间（Ｐ＞０．０５）。真皮层随年龄增长而增厚。真皮的毛囊层在胚胎时期就已发育形成，其厚度在各年龄段基本趋于一致（Ｐ＞０．０５）。网状层生后发育迅速，各年龄段之间呈明显增厚趋势（Ｐ＜０．０１）。毛囊群以３毛囊群为主，约占８５～９０％。初级毛囊在出生前就已全部发育形成。次级毛囊生后继续发生，Ｓ／Ｐ随之增大，小毛段Ｓ／Ｐ为１．６１，６月龄时为３．９９。胶原纤维在毛囊层内排列紧密并编织成网，在网状层内多呈水平方向排列且较稀疏。
The skin structure of 24 lambs was systematically studied in this paper.The Shandong Sishui fur sheep in four stages of age(short wool,medium wool,long wool and six months of age,respectively) were used.The results indicated that the thickness of epidermal layers was constantly between 19 and 21 μm in each stages of age (P>0.05).The derma layers thickened along with the growth of age.The follicle layer of derma was developed during the embryonic period and it had a constant thickness in each stages of age (P>0.05).The reticular layers grew fast and thickened much significantly between each stages of age after birth (P<0.01).The number of follicles in 85—95 percent of follicle groups was three.The primary follicles were developed before the birth.The secondary follicles kept developing after birth.The s/p ratio increased with the growth of secondary follicles(1.61 in birth and 3.99 in six months of age).The collagen fibers distributed closely and crosswise in follicle layer.sparsely and horizontally in reticular layer.The elastic fibers only distributed within the follicle layer.
出处
《畜牧兽医学报》
CAS
CSCD
北大核心
1997年第4期318-323,共6页
ACTA VETERINARIA ET ZOOTECHNICA SINICA
基金
国家自然科学基金
关键词
泗水裘皮羊
皮肤厚度
初级毛囊
次级毛囊
Sishui fur sheep,Skin thickness,Primary follicle,Secondary follicle
