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The usefulness of lipid droplet distribution patterns for grading eggs of hatchery-raised rainbow trout, Oncorhynchus mykiss, was evaluated. Eggs from females of autumn (n=29) and spring (n=30) spawning were evaluated for distribution of lipid droplets and tested with a water turbidity test as well. Fertilization rates were measured in eyed-stage embryos, hatched-stage embryos and swim-up stage larvae...
Low pH of ovarian fluid is attributed to its inability to activate sperm motility. In the present study we sought if broken eggs are reason for the decrease of ovarian fluid pH. We examined if 1) there is relationship between turbidity of ovarian fluid (indicator of presence of broken eggs) and pH, and 2) there is a decrease in ovarian fluid pH after addition of broken eggs. We found a negative relationship...
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