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Growth and production of milkfish (Chanos chanos) in brackishwater ponds: effects of dietary protein and feeding levels

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ffssa_p117.pdf (428.3Kb) Open Access
Downloads: 2,228
Date
1996
Author
Sumagaysay, Neila
Borlongan, Ilda
Page views
7,520
ASFA keyword
brackishwater aquaculture ASFA
diet ASFA
feeding experiments ASFA
fish culture ASFA
pond culture ASFA
proteins ASFA
AGROVOC keyword
Chanos chanos AGROVOC
Taxonomic term
Chanos chanos GBIF
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Abstract
The most economical combination of dietary protein and feeding levels for milkfish culture in brackishwater ponds was determined. Milkfish juveniles (average weight, 5 g) were stocked at 7000/ha and fed two diets containing 24% or 31% dietary protein at 2% or 4% of body weight.There was no interaction between feeding level and dietary protein on growth, feed efficiency, and energy assimilation of milkfish. This indicates that the response of milkfish to change in protein levels is not influenced by ration size. Regardless of protein levels, the final weight, weight gain, specific growth rate, and production of milkfish were significantly higher (P < 0.05) when fed at 4% body weight than at 2%. As culture progresses, differences in weights of fish fed varying protein levels were still insignificant. This could be attributed to the balanced amino acid profile of both diets. But, fish weights vary significantly among milkfish fed at different levels. The higher growth at 4% feeding level could be due to the higher amount of amino acids supplied to the fish for protein synthesis. These results suggest that growth will depend on the amount of amino acids supplied when the amino acid profile of the diet is balanced. Higher energy assimilated by milkfish at higher feeding rate demonstrated that energy supply also influences growth. Partial budgeting analysis revealed that bigger profits can be earned by using an amino acid balanced diet with 24% protein at a feeding rate of 4% of body weight. The greater amount of feed given at higher feeding rate can be compensated by faster growth and higher production.
Description
Abstract only
URI
http://hdl.handle.net/10862/549
Type
Conference paper
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  • Feeds for Small-scale Aquaculture [23]

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