| 摘要 |
A method for incubating roe of the grayling comprises such actions with the roe as fertilizing, washing, keeping in running water, putting roe-corns into incubation units, incubating the roe-corns and keeping free embryos. Fertilization of the roe-corns is carried out by a dry method, after what the roe-corns are thoroughly washed of the sperm and remains of the ovarial liquid up to the full transparency of water. Keeping of the roe-corns is carried out in a darkened place in a dish in the course of two hours, and after solidification of the outer coatings putting the roe-corns into an incubation unit of the "Schuster"-type is carried out in an amount of 5 ths. roe-corns. The incubation is carried out in a darkened place observing a water temperature within the limits of 10-12 °C. In doing so after the hatching the "dormancy" stage of free embryos lasts for 6-10 days. |
