USE OF DOPAMINE ANTAGONISTS ON INDUCED SPAWNING OF INDIAN MAJOR CARPS
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Authors
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KULDIP SINGH
Inland Fisheries Training Centre of Central Institute of Fisheries Education,
Barrackpore-743101, W.Bengal
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S. DUTT
Inland Fisheries Training Centre of Central Institute of Fisheries Education,
Barrackpore-743101, W.Bengal
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M. ALI
Inland Fisheries Training Centre of Central Institute of Fisheries Education,
Barrackpore-743101, W.Bengal
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R. K. BISWAS
Inland Fisheries Training Centre of Central Institute of Fisheries Education,
Barrackpore-743101, W.Bengal
Abstract
To test the efficacy of the technique of using dopamine - antagonists
with pituitary extracts, experi~ents were conducted in July/August, 93,
at the CIFE Fresh water Fish Farm, Powerkheda. In all, 35 sets (1 female
x 2 male in each set) were tried individually. 19 sets were treated with
Domperidone (DOM) and Carp Pituitary Extract (CPE) and they
constituted the experimental sets, while the rest 16 were treated with
CPE and formed the control sets. The breeding, complete ovulation and
hatching was 84.2%, 87.5% and 85.7%, respectively in the experimental
sets whereas it was 93. 7%, 60% and 72. 7%, respectively in case of control
sets. Experimental sets yielded 1.20 lakh spawn/kg body wt. (female) as
compared to 0.83 lakh spawn kg body wt. (female) received from control
sets on average basis. When DOM was used @ 50-60% there was 100%
breeding success but when increased to 70%, breeding rate fell to 66%. In
mass breeding of Catla in the Circular hatchery DOM mixed with CPE in
50:50 ratio gave excellent results.
