Dietary Supplementation of a- and (i- Chitosan and Growth and Blood Cell Composition in Common Carp, Cyprinus carpio L.
Dietary Supplementation of a- and (i- Chitosan and Growth and Blood Cell Composition in Common Carp, Cyprinus carpio L.
Date
2004
Authors
Victor, B
Ramesh, U
Arachi, J.M.A. Prabhu
Mannan, M. Mannar
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India)Cochin
Abstract
Fingerlings of Cyprinus carpio L. were reared on four supplementary feeds containing
1% each of a-chitin, a-chitosan, P-chitin and -chitosan for a period of 90 days. Significant
differences (p<0.05) were observed in weight gain of fish fed with a- and (J-chitosan
supplemented diets. Diets containing 1% a-chitosan gave food conversion ratio (FCR) 1.16,
protein efficiency ratio (PER) 2.11 and protein productive value (PPV) of 14.62. Fish survival
ranged from 73-93% in treated fingerlings, while it was only 67% in control. The values of
total erythrocyte count (TEC), total leucocyte count (TLC), haemoglobin (Hb), mean
corpuscular volume (MCV) and mean corpuscular haemoglobin (MCH) were significant in
the test groups treated with dietary a-chitosan. An overall improvement in the fish health
was observed in the treated groups, a- and P-chitosan can be used as immunomodulatory
feed additive in carp nutrition.
Description
Keywords
a-chitin, P-chitin, a-chitosan P-chitosan, Cyprinus carpio, growth indices, blood cell composition
Citation
Fishery Techn 41(2):87-92