Structural and histochemical differences between rhomboideus and semitendinosus muscles of kıvırcık (curly) and karacabey merino lambs kept under ldentical conditions

Çalışmada birbirleriyle genotipik özelliklere sahip Kıvırcık koyunu ile Karacabey Merinos koyunun semitendinosus ve rhomboideus kaslan kulla­nıldı. Kaslar histolojik incelemeler yanında, lipid, glikojen ve A TPase de­ monstrasyonu gibi histoşimik incelemelere tabi tutuldular. Kaslan oluşturan primer demetlerdeki kas tellerinin çaplan mikrometrik metodlarla ölçülerek biyometrik ortalamalan almdı . İncelemeler sonunda: Kıvırcık koyunlarında kas yapılarının , Karacabey Merinoslanna göre daha ince, kas hücreleri çap ortalamalannın daha küçük oldugu görüldü. Kıvırcık koyunu kaslannın endomizyum ve perimizyumlamıda daha fazla lipid depo ettikleri ve kas hücrelerinin daha fazla glikojene sahip olduklan tesbit edildi.The muscles of the two genetically related lambs were studied histochemically for their lipid, glycogene and A TP as e activities in addi­ tion to microscopical comparisons. The diorneters of muscle fibers in pri­ mary bundles were measured micrometrically and their biometrical ave­ rages were calculated statistically. The resulting observations were as fol­ lows: The textures of muscles of Kıvırcık lambs were finer than those of the Karacabey Merino lambs. There was more lipid depositian in the endo, and perimysium of Kıvırcık lambs muscles. Similarly more glycogene was fowıd in the cytoplasm of Kıvırcık lambs nıuscle eells. The average diameters of nıuscle fibers were smaller than Merino lambs. The nıuscle cells of both lanıb strains were containing enough lipid droplets to absorb and retain reasonably high anıounts of eellular water in their cytoso/e. According to the A TPase activities there were three types of muscle eells that might be classified as "fast", "slow" and "intennediate" in both muscles of both breeds