Effect of feeding level and feeding frequency on specific dynamic action in Silurus meridionalis

The effect of feeding level (FL; 0·5 to 4% dry diet mass per wet fish body mass) and feeding frequency (once every 4 days to twice per day) on postprandial metabolic response was investigated in southern catfish Silurus meridionalis at 27·5° C. The results showed that there was no significant differ...

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Bibliographic Details
Published in:Journal of fish biology 2005-07, Vol.67 (1), p.171-181
Main Authors: Fu, S. J., Xie, X. J., Cao, Z. D.
Format: Article
Language:English
Subjects:
Agnatha. Pisces
Biological and medical sciences
feeding frequency
feeding level
Freshwater
Fundamental and applied biological sciences. Psychology
specific dynamic action
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
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Summary:The effect of feeding level (FL; 0·5 to 4% dry diet mass per wet fish body mass) and feeding frequency (once every 4 days to twice per day) on postprandial metabolic response was investigated in southern catfish Silurus meridionalis at 27·5° C. The results showed that there was no significant difference in the specific dynamic action (SDA) coefficient among the groups of different feeding levels (P > 0·05). The duration increased from 26·0 to 40·0 h and the peak metabolic rate increased from 207·8 to 378·8 mg O2 kg−1 h−1 when the feeding level was increased from 0·5 to 4%. The relationship between the peak metabolic rate (RP, mg O2 kg−1 h−1) and FL could be described as: RP = 175·4 + 47·3 FL(r2 = 0·943, n = 40, P 
ISSN:0022-1112
1095-8649
DOI:10.1111/j.0022-1112.2005.00722.x