Maiorano G, McCormick R J, Field R A, Snowder G D
University of Wyoming, Laramie 82071, USA.
J Anim Sci. 1995 Feb;73(2):393-8. doi: 10.2527/1995.732393x.
Eighteen spring-born Columbia ram, wether, and zeranol-implanted ram lambs were examined to determine the influence of castration or zeranol implantation on collagen characteristics of skin, fell, and epimysium and possible relationships between collagen properties of each tissue and difficulty of pelt removal. Pelt removal force was lower in wethers than in rams (P < .05) and intermediate for zeranol-implanted rams. Collagen concentration in skin of rams was greater (P < .05) than that in wethers or implanted rams, but percentage of heat-soluble collagen in skin was higher in implanted rams. Percentage of type III collagen in skin was highest in rams and lowest in wethers (P < .05); that in the skin of implanted rams was intermediate. The fell of wethers contained a higher (P < .05) collagen concentration, higher insoluble collagen amount, and lower percentage of soluble collagen than that of rams or implanted rams. The fell had a lower percentage of type III collagen than that of rams (P < .05). Epimysium collagen concentration of rams and wethers was higher (P < .05) than that of implanted rams; however, percentage of soluble collagen was higher for the implanted rams than for the other classes. Type III collagen percentage in the epimysium did not differ by animal class (P < .05). Zeranol-implanted ram lambs had a higher percentage of soluble collagen in all tissues examined than did non-implanted rams and force required for pelt removal was reduced in implanted rams.(ABSTRACT TRUNCATED AT 250 WORDS)
对18只春季出生的哥伦比亚公羊、去势公羊以及植入玉米赤霉醇的公羊羔羊进行了检查，以确定去势或植入玉米赤霉醇对皮肤、皮板和肌外膜胶原蛋白特性的影响，以及各组织胶原蛋白特性与剥皮难度之间的可能关系。去势公羊的剥皮力低于公羊（P < 0.05），植入玉米赤霉醇的公羊的剥皮力处于中间水平。公羊皮肤中的胶原蛋白浓度高于去势公羊或植入玉米赤霉醇的公羊（P < 0.05），但植入玉米赤霉醇的公羊皮肤中热溶性胶原蛋白的百分比更高。公羊皮肤中III型胶原蛋白的百分比最高，去势公羊最低（P < 0.05）；植入玉米赤霉醇的公羊皮肤中的该百分比处于中间水平。去势公羊的皮板所含胶原蛋白浓度更高（P < 0.05），不溶性胶原蛋白量更高，可溶性胶原蛋白百分比低于公羊或植入玉米赤霉醇的公羊。皮板中III型胶原蛋白的百分比低于公羊（P < 0.
