A study on the induced spawning of catfish (Clarias gariepinus)

Asvester Ujan, Anand (2007) A study on the induced spawning of catfish (Clarias gariepinus). [Project Paper] (Submitted)

Text lp FSPM 2007 5.pdf Download (14MB)

Abstract

A study to determine the dosage for hormone ovaprim to be injected to the African catfish (Clarias gariepinus) injection frequency that is suitable and efficient was carried out in Universiti Putra Malaysia Campus Bintulu, Sarawak for a duration of seven weeks. In the experiment 27 of catfish broodstock ( 18 males and 9 females) were used and injected using the hormone ovaprim. A female broodstock (full dose) which have injected will be paired with 2 males broodstock injected (half dose) and then kept in blue plastic tanks which holds up to 500 liters of water. The mating process occurred in 12 hours after injection. There were three dosages of ovaprim tested on each parent catfish (0.25 ml/kg, 0.5 ml/kg and I .0 ml/kg). For each dose, three replications were done. The results showed _that with 1.0 ml/kg dosage that have been injected on the African catfish broodstock achieved, 64.8%-73.2% fertilization rate. Number of eggs produced was also high is 354,000 to 424,500 eggs. Using a dosage of 0.5 ml/kg, average resulted is 55.1 %-72.9% fertilization rate. While the dosage 0.25 ml/kg gave the lowest value with a fertilization rate of 53.2%-55.4%. From this study a high dosage (l.0 ml/kg) rate is the most suitable dose for the breeding of catfishes.

Item Type:	Project Paper
Faculty:	Faculty of Agriculture and Food Sciences
Depositing User:	Mr. Azman Mohamad
Date Deposited:	17 Dec 2024 02:21
Last Modified:	17 Dec 2024 02:21
URI:	http://psaspb.upm.edu.my/id/eprint/2241

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