(i) Pro-Bao's choice of pro-Bao should choose soft-body full-bodied, vigorous and non-invasive 3 to 4 years old individuals. For wrinkles abalone, the length of the shell is preferably about 8cm, and the variegated abalone and nine-hole abalone are best. At about 6 to 7 cm, individuals are too large, may be ageing, individuals are too small, spawning is small, and egg quality is sometimes difficult to guarantee. (B) Fertility 1. Variable temperature stimulation method: The abdomen ratio of 2:1 to 3:1 is placed in an incubator with filtered seawater, and slowly added with seawater at about 70°C to increase the temperature of the water. 3 °C, about 20 minutes later, then enter the low-temperature seawater, so that the water temperature is lower than the original water temperature 2 ~ 3 °C, while oxygenation stirring, as long as the glandular maturity is good, after temperature stimulation, can get a good oxytocin effect . 2. Dry dew and flowing water mixed stimulation method: The pro-Bao was put in the damp place to dry for 0.5 to 1 hour, then the ratio of 3:1 male and female was put into the spawning box to keep the sea water circulating in the box, and the pro-Bao was exposed to dry dew. With water and other changes to stimulate, 1 to 2 hours later, there will be a lot of emissions. 3. Fertilization: When artificial breeding of abalone, sperm and eggs are collected separately and then artificially inseminated. Fertilization should be performed as soon as possible after excretion of sperm and eggs. The density of eggs per milliliter of seawater is preferably no more than 100, and the sperm density is 100,000 to 300,000. After 3 to 5 minutes of fertilization, eggs should be washed 3 to 5 times in succession. Each interval should be 30 to 60 minutes. After fertilization, the fertilized eggs can be transferred to hatching ponds for hatching. The hatching density is 10 to 50 per milliliter of seawater. 4. Juvenile training: The density of larvae is 50 to 300 per liter of water. The larvae in the planktonic stage can feed the monotomic algae. After entering the flood season, they need to feed bait plates with bait for their feeding. 5. larval rearing: Pay attention to water quality, feeding and inflating. When the first breathing hole occurs, some large seaweeds such as canola can be fed. If the bait is not handled well, it will cause a lot of death.
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