Growth and feeding level in pre-weaning tambaqui Colossoma macropomum larvae

Citation
A. Sevilla et J. Gunther, Growth and feeding level in pre-weaning tambaqui Colossoma macropomum larvae, J WORLD A C, 31(2), 2000, pp. 218-224
Citations number
20
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Aquatic Sciences
Journal title
JOURNAL OF THE WORLD AQUACULTURE SOCIETY
ISSN journal
0893-8849 → ACNP
Volume
31
Issue
2
Year of publication
2000
Pages
218 - 224
Database
ISI
SICI code
0893-8849(200006)31:2<218:GAFLIP>2.0.ZU;2-4
Abstract
The relation between growth, feed utilization and feed ration was assessed during the first 15 feeding days in Colossoma macropomum larvae fed with Ar temia nauplii. Maintenance, optimum and maximum feeding rations (1.23; 5.48 and 27.2% body weight/d. dry feed, respectively) and feed conversions (0.4 and 0.78 optimum and maximum, respectively) were determined. At maximum fe eding the larvae grew 2.6 times faster that at optimum feeding, but the fee ding costs increased 1.94 times. Two commonly used growth rates (specific g rowth rate, SGR and coefficient G) were compared for the modelling of larva l growth. The maximum specific growth rate (SGR, growth rate at maximum fee ding) remained relatively constant during the first 15 d of feeding and is thus much more adequate to model the growth of tambaqui larvae, than the co efficient G, which increased more than four times in this period.