The Application of hCG, CPH and Ovopel in Successful Artificial Reproduction of Goldfish (Carassius auratus auratus) Under Controlled Conditions
Identifieur interne : 000283 ( Main/Exploration ); précédent : 000282; suivant : 000284The Application of hCG, CPH and Ovopel in Successful Artificial Reproduction of Goldfish (Carassius auratus auratus) Under Controlled Conditions
Auteurs : K. Targo Ska [Pologne] ; D. Kucharczyk [Pologne]Source :
- Reproduction in Domestic Animals [ 0936-6768 ] ; 2011-08.
Abstract
Artificial reproduction of fish is one of the main goals of aquaculture production. The aim of this study is to optimize the method of goldfish reproduction under controlled conditions by comparing the effectiveness of carp pituitary homogenate (CPH), Ovopel and human chorionic gonadotropin (hCG), administered as a one‐off dose and inducing two spawns in the same fish within a short time period. Goldfish spawners were stimulated with hCG, CPH and Ovopel, and the results were compared to the fish from the control group, comprised of unstimulated fish. In another experiment, spawn were induced twice within an interval of 21 days with the same group of fish. The best results in the first experiment in terms of the percentage of ovulating females and survival to the eyed‐egg stage were achieved after administering hCG (100% and 88.7%, respectively). However, the highest fecundity was observed in fish stimulated with Ovopel (89 960 eggs/kg). It was shown in the second experiment that female goldfish produce higher weight of eggs during the first spawning, but the number of eggs/BW ratio was higher during the next reproduction process. Survival, both that of embryos to the eyed‐egg stage and that of spawners, is higher during the first reproduction act.
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DOI: 10.1111/j.1439-0531.2010.01723.x
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