Effect of water temperature on the skeletal deformity in ascorbic acid-deficient rainbow trout.
Effect of water temperature on the skeletal deformity in ascorbic acid-deficient rainbow trout.
复制标题
水温对缺乏抗坏血酸的虹鳟鱼骨骼畸形的影响。
DOI：
10.2331/suisan.49.443
复制
发表时间：
1983
期刊：
影响因子：
--
通讯作者：
S. Ikeda
中科院分区：
文献类型：
--
作者：
Mamoru Sato;T. Kondo;R. Yoshinaka;S. Ikeda
研究了养殖水温对平均体重为0.17g的抗坏血酸缺乏虹鳟鱼骨骼畸形的影响。三组鱼被喂食三种抗坏血酸水平之一的饮食，即，0、2和200 mg L-抗坏血酸/100 g饲料，并在16°C或20°C下保持20周。另外两组给予两种抗坏血酸水平之一的饮食，即，0和200毫克L-抗坏血酸每100克饲料，并保持在16°C的前10周和20°C的最后10周。在维持在20°C的组中观察到较低的生长，与膳食抗坏血酸水平无关。骨骼畸形仅在抗坏血酸缺乏组中观察到。在最初保持在16°C，随后水温升高到20°C的组中，骨骼畸形的发展速度明显增加。这些结果表明，抗坏血酸缺乏的鱼组织中的羟基化不足的胶原蛋白在较高的水温下迅速变性和消化，导致结缔组织中胶原蛋白含量低，最终形成脆弱的骨骼结构。
The effect of rearing water temperature on the skeletal deformity in ascorbic acid-deficient rainbow trout, weighing 0.17g on average, was investigated. Three groups of fish were fed a diet at one of three ascorbic acid levels, i.e., 0, 2, and 200mg of L-ascorbic acid per 100g of diet, and were maintained either at 16°C or at 20°C for 20 weeks. Two other groups were given a diet at one of two ascorbic acid levels, i.e., 0 and 200mg of L-ascorbic acid per 100g of diet, and maintained at 16°C for the first 10 weeks and at 20°C for the last 10 weeks. Lower growth was observed in the groups maintained at 20°C irrespective of dietary ascorbic acid levels. The skeletal deformity was observed only in the ascorbic acid-deficient groups. The rate of development of skeletal deformity increased markedly in the group which was maintained initially at 16°C with subsequent rise of water temperature to 20°C. These results indicate that underhydroxylated collagen in the tissues of ascorbic acid-deficient fish is denatured and digested quickly at higher water temperature, resulting in the low collagen content of the connective tissues, and finally developing a fragile bone structure.