| 细毛羊腹毛高弯问题的研究(Ⅰ)——东北细毛羊皮肤组织结构特点的研究 |
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| 引用本文： | 张心田,秦鹏春,张继先,马宁.细毛羊腹毛高弯问题的研究(Ⅰ)——东北细毛羊皮肤组织结构特点的研究[J].东北农业大学学报,1984(3). |
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| 作者姓名： | 张心田 秦鹏春 张继先 马宁 |
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| 作者单位： | 东北农学院家畜解剖及组织胚胎教研室，东北农学院家畜解剖及组织胚胎教研室，东北农学院家畜各论第一教研室，吉林农业大学畜牧系 |
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| 摘 要： | 本研究采用了有腹毛高弯的和无高弯的东北细毛羊71只,其中有9—12月龄的小母羊和二年以上的成年母羊。样本取自肩后部和脐部。研究自1981年10月末至1982年2月末进行。用常规组织学方法,对皮肤各层、毛囊、毛根和汗腺进行了观察。1.测量了表皮、乳头层、中间层及网状层的厚度;毛、毛囊群、皮脂腺及汗腺的直径;皮脂腺及汗腺在每一平方毫米内的数量。2.成年母羊脐部皮肤的乳头层及网状层比肩部为厚,皮脂腺发达,毛裳数较少。3.小母羊与成年母羊相比,肩后部的乳头层较薄;脐部毛深较短;肩后部每一平方毫米皮脂腺数和毛数较多;出现残留髓质粗毛的个体数较多。4.皮肤结构的季节变化显著。5.明确了羊真皮分为乳头层、中间层及网状层的根据。6.明确了羊毛囊及毛根各段特点。7.有高弯腹毛和无高弯腹毛羊的毛囊弯曲情况及皮肤其它各结构未发现显著差异。
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OBSERVATIONS ON THE HISTOLOGICAL STRUCTURES OF SKIN IN NORTHESTERN FINE-WOOL SHEEP |
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| Abstract: | 71 Northeastern fine-wool sheep were used in this study.Among themwere adult ewes and the lambs 9 to 12 months old.Of both adult and youngewes,some possessed intensively crimpled abdominal wool,whereas othersdid not.The skin samples of each animal were taken from both the area be-hind the shoulder and the umbilical region in Oct.1981 and in Feb.1982.Thefine structure of various layers in the skin,hair follicles,sweatglands andsebaceous glands were observed with histological rotine staining methods.1.Criteria measured were:thicknesses of epidermis,papillary layers,inter-mediate layer and reticular layer;wool diameter,hair follicular group,sweatgland and the sebaceous gland;number per mm~2 of wool;2.No significantdifferences in the crimp of wool rood and the morphology of other various struc-tures in the skin were found between individuals with intensively crimpletabdominal wool and individuals without;3.The papillar and reticular lay-ers in the umbilical region of adult ewes were significantly thicker.The sebace-ous gland in the umbilical region were well-developed.Hair follicles in thesame region were less in number;4.There were following differences betweenlambs and ewes:1) the lambs' papillary layers of the region behind the shoulderwere thinner;2) their hair depth in the umbilical region was shorter;3) theirnumber of sebaceous glands and hair follicles per mm~2 in the region behindshoulder were more than those in the ewes;4) the lambs had more remnant hairswith retained medulla;5.seasonal changes in the structures of skin weresignificant;6.the dermis in sheep could be definitly divided into a papillar lay-er,an intermediate layer and a reticular layer;7.Some structural charact-eristics of various segments of a hair follicle and a hair root were recognized. |
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