International Journal of Fisheries and Aquatic Studies
2018, Vol. 6, Issue 2, Part A
Comparative evaluation of genetically improved and farmed rohu (Labeo rohita) on growth and yield at initial stage of rearingAuthor(s):
Umita Sah, Yuktilal Mukhiya and Suresh K WagleAbstract:
An experiment was carried out at Regional Agricultural Research Station (RARS), Tarahara, Nepal for 90 days during September to December 2015 to evaluate the performance of farmed Rohu (FR, Labeo rohita
) and genetically improved strain of Rohu (GIR). Fry with an initial mean weight of 1.74±0.4 g and 1.35±0.4 for GIR and FR were stocked in replicated ponds at density 20000 fry/ha. Fry were fed at 5% of their total biomass daily with a ration containing 22% crude protein. Absolute weight gain, relative and specific growth rates were significantly (P<0.05) higher in GIR. Survival rate of GIR and FR was 90.1±4.4% and 79.1±3.7%, respectively, at harvest after 90 days of rearing and the differences in survival rate was not significantly different (P>0.05). Gross yield of 2223.8 kg/ha for GIR was significantly (P<0.05) higher than the gross yield of 338.4 kg/ha for FR. Fish body length and weight coefficient was within the range of standard value for GIR (2.8) and FR (2.4) remained below standard value. The preliminary findings of the present investigation revealed that genetically improved rohu had a superior performance on growth and yield over the farmed rohu. Pages: 47-50 | 427 Views 16 DownloadsDownload Full Article:
How to cite this article:
Umita Sah, Yuktilal Mukhiya, Suresh K Wagle. Comparative evaluation of genetically improved and farmed rohu (Labeo rohita) on growth and yield at initial stage of rearing. Int J Fish Aquat Stud 2018;6(2):47-50.