Brood stock maturity and artificial breeding of rainbow trout, Oncorhynchus mykiss (Walbaum)
Abstract views: 84 / PDF downloads: 110
Abstract
The Norwegian rainbow trout, Oncorhynchus mykiss (Walbaum) was successfully reared and bred at the Experimental fishfarm, Chhirapani, Champawat (Uttarakhand). The stock attained sexual maturity during peak winter (December to February).
The male attained maturity after completion of 2 years (average body weight: 180-820 g) and female after 3 years (average
body weight: 900-1850g). Potential male and female brooders were segregated in separate ponds in November 2001 and
stripping was conducted during February 2002 and December 2002, by dry method. Fecundity recorded was between
547-1402 eggs kg-1 body weight. Eyed-egg stage was noticed after 23-46 days post-fertilization at ambient water temperature
between 4.5 to 8.5 0C. Incubation period was complete within 51-58 days (water temperature 6.5-12.0 0C) and 86-100 days
(water temperature 4.5-7.5 0C). The cumulative survival recorded was between 42.2 to 88.9%. The resultant yolk-laden
hatchlings were of 14-17 mm size range.
Downloads
Submitted
2016-09-24
Published
2016-09-24
Issue
Section
Articles
License
The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.How to Cite
Joshi, K. D. (2016). Brood stock maturity and artificial breeding of rainbow trout, Oncorhynchus mykiss (Walbaum). Indian Journal of Fisheries, 56(3), 219-222. https://epubs.icar.org.in/index.php/IJF/article/view/61787