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HCG and LHRH-A induced spawning in bighead carp Aristichthys nobilis Rich. reared in floating cages in Laguna de Bay

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Date
1989
Author
Fermin, Armando C.
Reyes Jr., Deogracias M.
Page views
2,583
Subject
cage culture ASFA
induced ovulation ASFA
rearing techniques ASFA
Philippines AGROVOC
Bighead carp
carp AGROVOC
Taxonomic term
Hypophthalmichthys nobilis GBIF
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Abstract
Hormone-induction of spawning in bighead carp Aristichthys nobilis Rich. by single or double intraperitoneal injection with varying combined dosages of HCG and LHRH-A was conducted. Fish were spawned successfully following a single or double injection with 1800 to 2000 IU HCG in combination with 10, 15 or 20 µg HRLR-A per kg body weight. Fish injected with lower dosages of HGC at 1200 or 1500 IU/kg body weight plus 20 µg/kg LHRH-A did not differ significantly (P>0.05). Fish given a single injection ovulated after 12.0 ± 0.1 hours. No significant difference was found in the total number of eggs spawned per fish among the injection protocols (P>0.05). However, lower fertilization and hatching rates of eggs were observed in fish that spawned spontaneously in the tank as compared to those fish whose eggs were stripped and dry-fertilized (P<0.05).
URI
http://hdl.handle.net/10862/1236
Suggested Citation
Fermin, A. C., & Reyes Jr., D. M. (1989). HCG and LHRH-A induced spawning in bighead carp Aristichthys nobilis Rich. reared in floating cages in Laguna de Bay. The Philippine Scientist, 26, 21-28. http://hdl.handle.net/10862/1236
Type
Article
ISSN
0079-1466
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  • Journal Articles [1155]

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