Nejedli S, Kozariá Z, Kantura V G, Petrinec Z, Zobundzija M, Sarusiá G, Susiá V
Department of Anatomy, Histology and Embryology, University of Zagreb, Croatia.
Vet Res Commun. 2006 Jul;30(5):523-9. doi: 10.1007/s11259-006-3243-2.
The body length and diameter of muscle fibres from the right hypaxial tail myomeres were measured in 100 sea bass larvae (Dicentrarchus labrax, L.) at ages of 40 to 90 days, from a fish farm in Croatia. The larvae were kept at a temperature of 19-20 degrees C and fed with standard feed for their respective ages. Body lengths of larvae 40-90 days old varied from 8 to 42 mm, increasing significantly in 10-day intervals (p < 0.001), except between days 50 and 60 when there was no increase in the body length. The measured diameters of muscle fibres ranged from 10 to 80 microm, the mean value increasing except between days 50 and 60. The fibre diameter in larvae aged up to 60 days was 10-40 microm, while that in larvae older than 70 days was 51-80 microm. In 90-day-old larvae there were no fibres of 10-20 microm in diameter; however, the number of fibers of 61-80 microm diameter increased. A statistically significant concordance was determined between the body length and fibre diameter of larvae 70 to 90 days old. Between days 50 and 60, arrested growth of the larval body and corresponding decrease in fibre diameter was observed. From day 45 until days 59, larvae were fed with Artemia nauplii and microparticles of formulated diets. From the day 60, minced fish was added to formulated diets. This change in diet probably resulted in the observed growth arrest.
在克罗地亚一家养鱼场，对100条40至90日龄的海鲈幼鱼（欧洲鲈鱼，L.）右轴下尾肌节的肌纤维体长和直径进行了测量。幼鱼饲养在19 - 20摄氏度的温度下，并投喂适合其相应年龄的标准饲料。40至90日龄幼鱼的体长从8毫米变化到42毫米，每隔10天显著增加（p < 0.001），但在50至60日龄之间体长没有增加。测量的肌纤维直径范围为10至80微米，除了50至60日龄之间，平均值有所增加。60日龄及以下幼鱼的纤维直径为10至40微米，而70日龄以上幼鱼的纤维直径为51至80微米。在90日龄的幼鱼中，没有直径为10至20微米的纤维；然而，直径为61至80微米的纤维数量增加了。确定了70至90日龄幼鱼的体长和纤维直径之间存在统计学上的显著一致性。在50至60日龄之间，观察到幼鱼身体生长停滞以及相应的纤维直径减小。从45日龄到59日龄，幼鱼喂食卤虫无节幼体和配方饲料微粒。从60日龄起，将碎鱼添加到配方饲料中。这种饮食变化可能导致了观察到的生长停滞。
