Stickland N C
Acta Anat (Basel). 1979;105(4):381-5. doi: 10.1159/000145144.
The distribution of succinic dehydrogenase enzyme activity was investigated in frozen sections of longissimus dorsi muscle taken from several species of East African game animal (giraffe, hartebeest, wildebeest, oryx, gerenuk and dik-dik) as well as local zebu cattle. Muscle fibres were classified as red (high succinic dehydrogenase activity), white (low activity) or intermediate. The mean diameter and percentage distribution of each fibre type were noted as well as the overall mean muscle fibre diameter (MFD) for each species. The diameters of red muscle fibres were found to be between 54 and 62% of the diameters of the white muscle fibres for all species with MFD differences between species being up to over 100%. The variation in MFD was found to be significantly and positively correlated with live weight, when zebu values were omitted. It was found that the variation in MFD was significantly related to the diameter of muscle fibre types and not to the percent distribution of these fibre types.
对取自几种东非野生动物(长颈鹿、麂羚、角马、大羚羊、长颈羚和犬羚)以及当地瘤牛的背最长肌冷冻切片中的琥珀酸脱氢酶活性分布进行了研究。肌纤维被分类为红色(琥珀酸脱氢酶活性高)、白色(活性低)或中间型。记录了每种纤维类型的平均直径和百分比分布,以及每个物种的总体平均肌纤维直径(MFD)。发现所有物种的红色肌纤维直径为白色肌纤维直径的54%至62%,物种间的MFD差异高达100%以上。当剔除瘤牛的值时,发现MFD的变化与活重显著正相关。结果发现,MFD的变化与肌纤维类型的直径显著相关,而与这些纤维类型的百分比分布无关。