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Journal of Environmental Biology

pISSN: 0254-8704 ; eISSN: 2394-0379 ; CODEN: JEBIDP
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    Abstract - Issue Sep 2020, 41 (5)                                     Back


nstantaneous and historical temperature effects on a-pinene

The effect of enriched Cladocera on growth, survivability and body coloration of Siamese fighting fish

 

N.W. Rasdi1, 5, A. Ramlee2, A.B. Abol-Munafi3, M. Ikhwanuddin3, N. Azani3, A. Yuslan1, H. Suhaimi1 and A. Arshad4*  

1Faculty of Fisheries and Food Sciences, Universiti Malaysia Terengganu, 21300 Kuala Nerus, Terengganu, Malaysia

2Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21300 Kuala Nerus, Terengganu, Malaysia

3Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21300 Kuala Nerus, Terengganu, Malaysia

4International Institute of Aquaculture and Aquatic Sciences, Universiti Putra Malaysia, 71050 Port Dickson, Negeri Sembilan, Malaysia

5Institute of Tropical Biodiversity and Sustainable Development, Universiti Malaysia Terengganu, 21300, Kuala Terengganu, Malaysia

*Corresponding Author Email : azizarshad@upm.edu.my

 

Paper received: 15.01.2020 ?????? ???????????????????????????????????????Revised received: 15.04.2020 ???????????? ?????????????????????????????????????Accepted: 14.08.2020

 

 

Abstract

Aim: This study investigated the effects of enriched Moina micrura on growth, survivability, and body coloration of Betta splendens.

Methodology : Four enriched M. micrura treatments, namely M. micrura enriched with yeast (T1), Palm kernel cake (PKC) (T2), egg yolk (T3), and Chlorella sp. (T4), were tested for best enrichment evaluation to B. splendens juveniles. Enrichment treatments were performed for 24-hr period and the feeding experiment was carried out for 30 days

Results : Fish fed with Chlorella sp. significantly exhibited the highest specific growth (2.80) and percentage survival (90.0) (P=0.0003; P<0.05). The coloration test on fish body, L* value displayed significant impact of the enrichment types of M. micrura (P=0.0004, P<0.05), whereby T1 had blacker shade (44.60) than the other treatments. As for a* value, a significant difference (P=0.23, P<0.05) was noted for T4 (2.65) that gave more intense red shade than other treatments. Treatment PKC (T2) significantly exerted a more yellowish shade (2.97) than the rest for b* value (P=0.02, P<0.05). The proximate analysis of fishes in each treatment revealed that the protein and lipid content in T4 (92.22), (21.44) was higher than the other treatments.

Interpretation : The present study discovered that M. micrura enriched with Chlorella sp. emerged as the best enrichment method and has the potential to be an effective enrichment formula for the growth and survival of juvenile betta fish. This finding demonstrates that microalgae Chlorella sp. can be used to substitute other medium of enrichment for live food to facilitate enrichment procedures in attaining sustainable culture across the ornamental fish industries.

Key words : Body colouration, Betta splendens, Chlorella sp, Moina micrura, Specific growth 

 

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