Induction of Ovulation in Ornamental Common Carp (Koi, Cyprinus Carpio L.) Using Lhrha ([d-Ser(tbu)6, Pro9-Net] Combined With Haloperidol and Carp Pituitary Extract
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Date
2004
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Publisher
Blackwell Publishing Ltd
Abstract
The effects of a single injection of mammalian superactive analogue [D-Ser(tBu)(6),Pro(9)-NEt]-LHRHa (20 mug/ kg(-1)) combined with the dopamine antagonist, haloperidol (HAL, 0.5 mg kg(-1)), for induction of ovulation in the koi carp broodstocks were determined under routine hatchery conditions. The results were compared with classic carp pituitary extract (CPE, double injection) application (water temperature 22 degreesC). Physiological saline (0.7% NaCl)-injected fish were used as a control group and no ovulation occurred in this group. The spawning ratio was high in the LHRHa+HAL treatment group and in the CPE treatment group (6/7 and 5/7 respectively). The latency period was 14-16 h in the LHRHa+HAL treatment group and 12-14 h in the CPE treatment group (after the second injection). There was no difference between the two ovulating groups with respect to the spawning index (the weight of eggs as a percentage of female body weight) and fertilization rate of eggs (P>0.05). As a result, ovulation can be induced successfully in koi carp broodstocks with 20 mug kg(-1) [D-Ser(tBu)(6),Pro(9)-NEt]-LHRHa+0.5 mg kg(-1) HAL treatment in a single injection without decreasing the egg quality. Application of this combination can be useful for hatchery and broodstock management in koi carp culture.
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Keywords
Induction Of Ovulation, Lhrha, Haloperidol, Koi Carp
Turkish CoHE Thesis Center URL
WoS Q
Q2
Scopus Q
Q2
Source
Volume
35
Issue
1
Start Page
10
End Page
14