Author:
Rangacharyulu P. V.,Sarkar S.,Mukhopadhyay P. K.
Abstract
A study was conducted to know the vitamin A requirement of rohu (Labeo rohita) fry. Rohu fry of average initial weight 0.27g were fed with purified diets containing 0, 1000, 2000, 3000 and 4000 IU vitamin A/kg diet for a period of 120 days under laboratory conditions. Vitamin A unsupplemented diet served as control. A significantly (P < 0.05) higher growth of 1.72 g was obtained in fish fed with diet containing 2000 IU/kg vitamin A. The lowest FCR of 2.52 was recorded in the same group. The study indicated that vitamin A can be added @ 2000 IU/kg diet for rohu fry to achieve better growth and feed efficiency.
Publisher
Association of Aquaculturists
Reference16 articles.
1. AOAC, 1990. Official Methods of Analysis (15 ed.), Association of Analytical Chemists. Inc., Arlington, 1298 pp.
2. Aoe, H., I. Masuda, T. Mimura, T. Saito and A. Komo, 1968. Requirement of young carp for vitamin A. Bull. Jap. Soc. Sci. Fish., 34: 959-964.
3. Blomhoff, R., M. H. Green and K. R. Norum, 1992. Vitamin A: Physiological and biochemical processing. Annu. Rev. Nutr., 12: 37-57.
4. Duncan, C. B., 1955. Multiple range and multiple 'F' test. Biometrics, 11:1-42.
5. Dupree, H. K., 1970. Dietary requirement of vitamin A acetate and Carotene. In: Progress in Sport Fishery Research, 1969. Resource publication no. 88, Washington D. C., Bureau of Sport Fishery and Wildlife, pp. 148-150.