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אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Color enhancement in the ornamental dwarf cichlid Microgeophagus ramirezi by addition of plant carotenoids to the fish diet
Year:
2007
Authors :
הרפז, שנאן
;
.
פדוביץ, דניאל
;
.
Volume :
59
Co-Authors:
Harpaz, S., Department of Aquaculture and Poultry, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Padowicz, D., Department of Aquaculture and Poultry, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Facilitators :
From page:
195
To page:
200
(
Total pages:
6
)
Abstract:
The present research examined the effects of adding carotenoids from oleoresin paprika to fish feeds for ornamental dwarf cichlid, Microgeophagus ramirezi. The growth rate, survival, carotenoid accumulation level, and color intensity were evaluated. Post larvae and near-adult (three months old) fish were tested to determine when carotenoids are better assimilated. The addition of carotenoids had no effect on the growth rate or survival in either life stage, however, they had a clear effect on color enhancement. After 45 days, near-adult fish that consumed carotenoid-supplemented diets at 60, 120, or 240 mg/ kg had significantly higher levels of carotenoids (72.19±4.55, 84.81±5.29, and 86.55±4.50 μg/g dry matter, respectively) than control fish (33.69±1.06 μg/g), with no significant differences between treatments. After 75 days, post larvae that consumed 240 mg/kg carotenoids accumulated significantly more carotenoids in their body (59.34±3.93 μg/g dry matter) than fish that consumed only 60 mg/kg carotenoids (40.53±2.37 μg/g dry matter) or no supplemental carotenoids (29.18 μg/g dry matter). Visual examination revealed a strong correlation between level of pigment accumulation and color appearance in the fish. Results indicate that addition of 60 mg oleoresin paprika per kg diet is sufficient to obtain good coloration in M. ramirezi.
Note:
Related Files :
accumulation rate
carotenoid
carotenoids
cichlid
color
Color enhancement
diet
Growth
Microgeophagus ramirezi
survival
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
26054
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:19
You may also be interested in
Scientific Publication
Color enhancement in the ornamental dwarf cichlid Microgeophagus ramirezi by addition of plant carotenoids to the fish diet
59
Harpaz, S., Department of Aquaculture and Poultry, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Padowicz, D., Department of Aquaculture and Poultry, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Color enhancement in the ornamental dwarf cichlid Microgeophagus ramirezi by addition of plant carotenoids to the fish diet
The present research examined the effects of adding carotenoids from oleoresin paprika to fish feeds for ornamental dwarf cichlid, Microgeophagus ramirezi. The growth rate, survival, carotenoid accumulation level, and color intensity were evaluated. Post larvae and near-adult (three months old) fish were tested to determine when carotenoids are better assimilated. The addition of carotenoids had no effect on the growth rate or survival in either life stage, however, they had a clear effect on color enhancement. After 45 days, near-adult fish that consumed carotenoid-supplemented diets at 60, 120, or 240 mg/ kg had significantly higher levels of carotenoids (72.19±4.55, 84.81±5.29, and 86.55±4.50 μg/g dry matter, respectively) than control fish (33.69±1.06 μg/g), with no significant differences between treatments. After 75 days, post larvae that consumed 240 mg/kg carotenoids accumulated significantly more carotenoids in their body (59.34±3.93 μg/g dry matter) than fish that consumed only 60 mg/kg carotenoids (40.53±2.37 μg/g dry matter) or no supplemental carotenoids (29.18 μg/g dry matter). Visual examination revealed a strong correlation between level of pigment accumulation and color appearance in the fish. Results indicate that addition of 60 mg oleoresin paprika per kg diet is sufficient to obtain good coloration in M. ramirezi.
Scientific Publication
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