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Studies on Seed Production of Rainbow Trout, Oncorhynchus mykiss - Hatching rate and early stage performance of USA strain rainbow trout, Oncorhynchus mykiss -  

Baik, Kook-Ki (Gangwon Province Inland Fisheries Development Experiment Station)
Choi, Young-Hee (Gangwon Province Inland Fisheries Development Experiment Station)
Lee, Joong-Chul (Gangwon Province Inland Fisheries Development Experiment Station)
Park, In-Sik (Gangwon Province Inland Fisheries Development Experiment Station)
Kim, Young-Kil (Gangwon Province Inland Fisheries Development Experiment Station)
Kim, Doo-Youn (Gangwon Province Inland Fisheries Development Experiment Station)
Lee, Chae-Sung (Yeongdong Inland Fisheries Research Institute, National Fisheries Research Development and Institute)
Publication Information
Journal of Aquaculture / v.20, no.2, 2007 , pp. 85-89 More about this Journal
Abstract
This study examined the hatching rate of eyed-eggs and growth of fingerlings of USA strain rainbow trout, Oncorhynchus mykiss, which were transplanted on Nov. 17, 2005 from the USA for improvement of breeding. The diameter and weight of eyed-eggs were $4.95{\pm}0.34\;mm$ and $0.07{\pm}0.003\;g$, respectively. The eyed-eggs were hatched in 8 days later and hatching rates were $77.3{\sim}98.6%$. After 56 days from hatching, the fingerlings grew to $4.0{\pm}0.7$ cm and 0.62 g in total length and body weight, respectively. The relationships between total length (TL) and elapsed days (ED) were expressed as TL=0.0366ED+1.8645 ($r^2=0.928$, n=350). The relationships between body weight (BW) and elapsed days (ED) were expressed as following; $BW=0.0638e^{0.0408ED}\;(r^2=0.9917,\;n=350)$. And survival of rainbow trout was $64.5{\pm}1.3%$ in 56 days after hatching.
Keywords
Rainbow trout; Seed production; Growth of fingerlings; Eyed-eggs;
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