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Evaluation of dietary oleoresins on the enhancement of skin coloration and growth in the marine ornamental clown fish, Amphiprion ocellaris (Cuvier, 1830)

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Relation http://eprints.cmfri.org.in/14530/
https://www.sciencedirect.com/science/article/abs/pii/S004484862032216X?via%3Dihub
https://doi.org/10.1016/j.aquaculture.2020.735728
 
Title Evaluation of dietary oleoresins on the enhancement of skin coloration and
growth in the marine ornamental clown fish, Amphiprion ocellaris (Cuvier,
1830)
 
Creator Ebeneezar, Sanal
Linga Prabu, D
Chandrasekar, S
Tejpal, C S
Madhu, K
Sayooj, P
Vijayagopal, P
 
Subject Feed
Fish Nutrition
Food and Feeding
Aquaculture
Ornamental Fishes
 
Description A 60-day feeding trial was carried out to investigate the effects of dietary oleoresin inclusion on skin colour
intensity, carotenoid content, growth performance and digestive enzyme activities of a high value marine ornamental
clown fish, A. ocellaris. Experimental diets were formulated with natural oleoresin pigments namely,
paprika, turmeric and chlorophyll, with dietary inclusion at the rate of 20 gkg−1 in the diets. Experimental units
were set in triplicates with six numbers of fish in each tank and maintained in filtered sea water of 20‰ salinity
in a recirculatory system. Clown fish with average initial weight of 150.6 ± 0.10 mg and initial length of 8 mm
were fed five different diets viz., control/ basal diet (C), diets with inclusion at the rate of 20 gkg−1 each of
paprika (PAP), turmeric (TUR) and chlorophyll (CHL) oleoresins and combination of oleoresins (COM) at the
rate of 20 gkg−1. Skin colour intensity in terms of red and yellow hues and total carotenoid levels differed
significantly (P < .05) and highest intensity was recorded in fishes fed the PAP, followed by the COM group.
Fish fed with the diet containing COM showed significantly higher final body weight, specific growth rate,
weight gain % and feed efficiency as compared to other treatments and was followed by the PAP group. The
whole body carotenoid content was highest in COM and PAP groups. There were no significant differences
(P > .05) with respect to feed efficiency, digestive enzyme activities, viscero somatic index, visceral length
index, condition factor and whole body proximate composition among different treatments. These results suggested
that the dietary pigments have a direct influence on the skin pigmentation in A. ocellaris without adverse
effects on digestive functions and body condition. Colour imparted in fish skin due to paprika oleoresin was
found to be superior.
 
Publisher Elsevier
 
Date 2020
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/14530/1/Aquaculture_2020_Sanal%20Ebeneezar_Evaluation%20of%20dietary%20oleoresins%20on%20the%20enhancement%20of%20skin%20coloration.pdf
Ebeneezar, Sanal and Linga Prabu, D and Chandrasekar, S and Tejpal, C S and Madhu, K and Sayooj, P and Vijayagopal, P (2020) Evaluation of dietary oleoresins on the enhancement of skin coloration and growth in the marine ornamental clown fish, Amphiprion ocellaris (Cuvier, 1830). Aquaculture, 529. pp. 1-9.