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Rapid wound healing in African catfish, Clarias gariepinus, fed diets supplemented with ascorbic acid

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evols.library.manoa.hawaii.edu
Date
2001
Author
Erazo-Pagador, Gregoria
Din, Mohd Shariff
Page views
1,553
ASFA keyword
animal nutrition ASFA
defence mechanisms ASFA
diet ASFA
feed composition ASFA
damage ASFA
nutritional requirements ASFA
vitamin C ASFA
vitamins ASFA
AGROVOC keyword
Clarias gariepinus AGROVOC
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Abstract
Wound healing in African catfish, Clarias gariepinus, fed diets supplemented with ascorbic acid was studied under laboratory conditions. Fish weighing approximately 80-110 g were stocked in 500 l aquaria in a static water system and fed one of five test diets containing different levels of microencapsulated ascorbic acid (0, 0.06, 0.10, 0.30 and 0.70 g AsA/100 g feed). After two weeks, all experimental fish were wounded by making a 1 x 1 cm dorso-lateral incision above the lateral line of the fish. Wounded tissues were sampled for histopathological analysis 4, 8, 24, 48 and 96 hours, 6, 8, 10, 12 and 14 days after making the incision. There were significant differences in weight gain, specific growth rate (SGR) and feed conversion ratio among the dietary treatments. Weight gain and SGR of fish fed the ascorbic acid free diet were lower than those of fish fed diets supplemented with ascorbic acid. The wound healing response showed a direct correlation to ascorbate level in the diet. Fibroblasts were present at 96 h irrespective of the ascorbic acid level. As 14 days, fish fed no ascorbic acid had some regeneration of muscle tissues, whereas fish fed diets containing supplemental ascorbic acid had a normal epidermis, dermis and muscle structure. There was no mortality during the experimental period, and fish fed ascorbic acid free diets did not exhibit any deficiency signs. Results of this study indicate that about 0.10-0.70 g AsA/100 g feed is needed for wound repair in African catfish.
URI
http://hdl.handle.net/10862/1896
Suggested Citation
Erazo-Pagador, G., & Din, M. S. (2001). Rapid wound healing in African catfish, Clarias gariepinus, fed diets supplemented with ascorbic acid. The Israeli Journal of Aquaculture-Bamidgeh, 53(2), 69-79. http://hdl.handle.net/10862/1896
Type
Article
ISSN
0792-156X
Collections
  • Journal Articles [1196]


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