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Diurnal feeding pattern and gut content of milkfish Chanos chanos (Forsskål, 1775) cultured semi-intensively during the wet and dry season in brackish ponds in the Philippines

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Date
2008
Author
Kühlmann, Kai-Jens
Focken, Ulfert
Coloso, Relicardo M.
Becker, Klaus
Page views
6,728
Subject
aquaculture economics ASFA
digestive system ASFA
embryonic development ASFA
feed composition ASFA
feeding experiments ASFA
fish culture ASFA
marine fish ASFA
pond culture ASFA
Chanos chanos AGROVOC
Oryza sativa AGROVOC
Philippines AGROVOC
Taxonomic term
Chanos chanos GBIF
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Abstract
To improve feeding management and reduce feed cost in semi-intensive grow-out culture of milkfish (Chanos chanos, Forsskål 1775) in brackish ponds, the relative shares of natural food (NF) and supplemental feed (SF) ingested by the fish were microscopically quantified from their completely dissected digestive tracts sampled during 24-h cycles in wet (June–September) and dry (December–April) seasons. Particles from rice husk, indigestible to milkfish, were used as internal markers to quantify supplemental feed. Significantly (P<0.05) more NF than SF (1.4±0.2 vs. 0.4±0.1 g kg−0.8) and SF than NF (1.4±0.8 vs. 0.6±0.3 g kg−0.8) were found during the first month of the wet and the first 3 months of the dry season respectively. Diurnal feeding patterns on SF were significantly higher at morning hours during the dry compared with the wet season. The feeding pattern of milkfish is likely to be affected by the different weather and pond conditions in both seasons. Developing a season-specific pond fertilization management to enhance NF availability in semi-intensive milkfish culture can help to improve the economical and ecological performance of milkfish culture.
URI
http://hdl.handle.net/10862/2082
Suggested Citation
Kühlmann, .-J., Focken, U., Coloso, R. M., & Becker, K. (2008). Diurnal feeding pattern and gut content of milkfish Chanos chanos (Forsskål, 1775) cultured semi-intensively during the wet and dry season in brackish ponds in the Philippines. Aquaculture Research, 40(1), 2-12. https://doi.org/10.1111/j.1365-2109.2008.02096.x 
DOI
10.1111/j.1365-2109.2008.02096.x
Type
Article
ISSN
1355-557X; 1365-2109
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  • Journal Articles [1155]

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