摘要
初始质量约为240g的太平洋鲑鱼Oncorhynchusspp.于0 25m3的水族箱中养殖64d,水温为(15 5±3 7)℃,研究淡水养殖太平洋鲑鱼饥饿后补偿性生长效果。实验分6组,分别为对照组(每日投喂),实验1组(隔日投喂),实验2组(隔2d投喂2d),实验3组(隔4d投喂4d),实验4组(隔8d投喂8d),实验5组(隔16d投喂16d)。实验结果表明:饥饿1～4d再循环投饲组太平洋鲑鱼表现出完全补偿生长,而饥饿8～16d组太平洋鲑鱼不能补偿生长,补偿生长效果是摄食率和食物转化率同时提高的结果。
A recovery growth experiment on Pacific Salmon(Oncorhynchus spp.)was conducted to determine the effects of growth following starvation in freshwater. During a 64 d period, Pacific Salmon (initial weight ca. 240 g) were divided into 6 experimental groups maintained at (15.5±3.7) ℃ : Control group (satiation for 64 d); group 1(starvation 1 d +satiation 1 d); group 2(starvation 2 d + satiation 2 d); group 3(starvation 4 d +satiation 4 d); group 4(starvation 8 d + satiation 8 d); group 5(starvation 16 d + satiation16 d). The present study showed that: Starvation for 1 to 4d could result in full compensatory growth, whereas derivation of food for 8 to 16d could not lead to compensatory growth. Compensatory growth arose from the improvements of both the feeding rate and the feed conversion ratio.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2005年第3期86-89,共4页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
广东省自然科学基金资助项目(2002722)
