Time from fertilization to eyed ova, hatching and complete yolk absorption was studied in relation to egg size (44.7, 68.6 and 100.7 mg) and temperature (5, 10 and 15°C). The temperature 15°C was first used from the eyed ova stage because newly fertilized eggs could not survive this temperature. After first feeding (at complete yolk absoprtion) the growth of the fish was followed 260 days at 5°C, 175 days at 10°C and 130 days at 15°C. The time it took to eyed ova, hatching and complete yolk absorption was independent of egg size. The weight and energy content at complete yolk absorption was highest at 10°C. There were no significant differences in growth between fish hatched from eggs of different sizes.
|Number of pages||8|
|Publication status||Published - 1991|
- Rainbow trout
- Egg size