e-ISSN 2231-8542
ISSN 1511-3701

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COMMUNICATION I: A Preliminary Study on Induced Spawning of the Catfish Clarias batrachus (Linnaeus) in Malaysia


Pertanika Journal of Tropical Agricultural Science, Volume 13, Issue 1, April 1990

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Ten gravid Clarias batrachus females were administered with a single dose of common carp pituitary homogenate (CPH). Before injection, the eggs were light yellow and the diameter ranged from 0.94 mm to 1.08 mm. Ovulation occurred approximately 12 hours after the adminstration of CPH. The colour of the eggs turned brown and the diameter ranged from 0. 99 mm to 1.27 mm. The fertilization rates ranged from 10-81%. The eggs hatched after about 30-36 hours of incubation at 26°C to 28°C. The hatchingrates ranged from 13-67%

ISSN 1511-3701

e-ISSN 2231-8542

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