Programa de Doctorado en Ciencias Veterinarias, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Campus Isla Teja, Valdivia, Chile.
Vet Rec. 2010 Jan 9;166(2):45-50. doi: 10.1136/vr.c71.
Two systems for transporting live salmon (Salmo salar) were compared in terms of their effects on blood variables, muscle pH and rigor index: an 'open system' well-boat with recirculated sea water at 13.5 degrees C and a stocking density of 107 kg/m3 during an eight-hour journey, and a 'closed system' well-boat with water chilled from 16.7 to 2.1 degrees C and a stocking density of 243.7 kg/m3 during a seven-hour journey. Groups of 10 fish were sampled at each of four stages: in cages at the farm, in the well-boat after loading, in the well-boat after the journey and before unloading, and in the processing plant after they were pumped from the resting cages. At each sampling, the fish were stunned and bled by gill cutting. Blood samples were taken to measure lactate, osmolality, chloride, sodium, cortisol and glucose, and their muscle pH and rigor index were measured at death and three hours later. In the open system well-boat, the initial muscle pH of the fish decreased at each successive stage, and at the final stage they had a significantly lower initial muscle pH and more rapid onset of rigor than the fish transported on the closed system well-boat. At the final stage all the blood variables except glucose were significantly affected in the fish transported on both types of well-boat.
两种运输活三文鱼（Salmo salar）的系统在血液变量、肌肉 pH 值和僵直指数方面进行了比较：一种是“开放式系统”运鱼船，在 13.5°C 的循环海水中以 107 公斤/立方米的密度运输 8 小时；另一种是“封闭式系统”运鱼船，在 16.7 到 2.1°C 的冷水中以 243.7 公斤/立方米的密度运输 7 小时。在四个阶段的每一个阶段都对每组 10 条鱼进行了采样：在养殖场的笼子里、装船后、运输后在未卸货前的运鱼船里，以及在将鱼从休息笼中泵出后在加工厂里。在每次采样时，鱼都通过鳃切割被致晕和放血。采集血样以测量乳酸盐、渗透压、氯化物、钠、皮质醇和葡萄糖，在死亡时和三小时后测量其肌肉 pH 值和僵直指数。在开放式系统运鱼船中，鱼的初始肌肉 pH 值在每个连续的阶段都降低，在最后一个阶段，它们的初始肌肉 pH 值明显更低，僵直开始得更快，比在封闭式系统运鱼船中运输的鱼更快。在最后一个阶段，在两种运鱼船中运输的鱼的所有血液变量除了葡萄糖都受到显著影响。
