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Hormonal, environmental, and dietary manipulation of milkfish broodstock to enhance egg production

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Date
1993
Author
Emata, Arnil C.
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Abstract
The insufficient supply of milkfis fry severely limits the expanion of milkfish aquaculture. While natural spamning and hatchery production of milkfish fry have been attained recently, there is sitll a need to incease egg production from available broodstock. A number of studies geared towards this concern are currently conducted at SEAFDEC Aquaculture Department with moderate success. Chronic administration of estradiol-17B and 17A-hydroxy-progesterone to femaleand male milkfish broodstock increased maturation and rematuration rates. Milkfish kept under constant long phtoperiod (16L:8D) appeared to have prolonged gonadal development than thoes of milkfish reared under long to normal to short photoperiod. Ffrmulated diet containing 6% liquid that is feed to milkfish broodstock at a daily ration 4% of total body weight appeared sufficient for maintaning sexual maturation andspawning. Refinements in these areas canensure a better management technique that can provide maximum number of good quality eggs required by hatcheries.
URI
http://hdl.handle.net/10862/358
Suggested Citation
Emata, A. C. (1993). Hormonal, environmental, and dietary manipulation of milkfish broodstock to enhance egg production. In Towards More Effective Utilization of Resources for Sustained Development. Proceedings of the First IFS-NRCP Seminar-Workshop, 26-29 April 1993, Makati, Metro Manila, Philippines (pp. 146-153). Stockholm, Sweden: International Foundation for Science.
Subject
photoperiodicity ASFA; sexual maturity ASFA; hormones ASFA; fecundity ASFA; Diets; Diets; Reproductive performance AGROVOC; Fecundity AGROVOC; Brood stocks; Philippines AGROVOC; Milkfish AGROVOC; Chanos chanos AGROVOC
Taxonomic term
Chanos chanos GBIF
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  • AQD Conference Proceedings [296]

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