Growth monitoring of koi fish (Cypri nus carpio) in natural hatchery techniques in Umbulan, Pasuruan, East Java

F. P. Putri, N. N. Dewi

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)

Abstract

Koi fish (Cyprinus carpio) are one of the most popular ornamental fish commodities in the world. The purpose of this study was to analyze the growth and monitoring of koi fish on natural hatchery techniques. This research was conducted at the Technical Implementation Unit of Freshwater Aquaculture Development in Umbulan, Pasuruan, East Java Province between December 2017 and January 2018. The koi fish breeding technique in Umbulan is done naturally using two females with the same weight of 1.5 kg and three males with a weight of 1.8 kg, 1.5 kg and 1.5 kg respectively. The maintenance of the larvae included feeding, the monitoring of the larvae and the associated water quality measurements. The hatching rate of the koi fish eggs was 80%. The specific growth rate during maintenance was 0.164%, and the growth rate for every week was 1.822 x 10-3 g/day; 1.34 x 10-3 g/day; and 1.75 x 10-3g/day. The feed conversion ratio was 1.38 and the survival rate was 73.8%. The average of the water quality values including temperature was 26.25° C. The pH was 7.53, the dissolved oxygen was 6.26 mg / L, NO3 was 0.75 mg / L, NO2 was 0.01 mg / L, Fe was 0.06 mg / L and PO4 was 0.74 mg / L.

Original languageEnglish
Article number012016
JournalIOP Conference Series: Earth and Environmental Science
Volume236
Issue number1
DOIs
Publication statusPublished - 1 Mar 2019
Event1st International Conference on Fisheries and Marine Science, InCoFiMS 2018 - East Java, Indonesia
Duration: 6 Oct 2018 → …

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