MySheen

Screening and cultivation of parent fish

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, 1. Pond conditions: equipped with two ponds with an area of 2-3 mu, which are male parent cultivation pond and female parent cultivation pond respectively. The depth of the pool is required to be 2 meters, the pool slope is impervious, the bottom of the pool is flat and free of weeds, and it is convenient for injection and drainage. Drain the pond water 30 days before stocking, 7-10 days before stocking, water injection 5-8 cm deep, clear the pond with 125 kg quicklime per mu and disinfect it. 2. parent fish screening: 2-year-old allogynogenetic silver crucian carp is selected as the female parent, with a tail weight of more than 600g, normal shape, silver gray and rich luster.

1. Pond conditions: equipped with two ponds with an area of 2-3 mu, which are male parent cultivation pond and female parent cultivation pond respectively. The depth of the pool is required to be 2 meters, the pool slope is impervious, the bottom of the pool is flat and free of weeds, and it is convenient for injection and drainage. Drain the pond water 30 days before stocking, 7-10 days before stocking, water injection 5-8 cm deep, clear the pond with 125 kg quicklime per mu and disinfect it.

2. parent fish screening: 2-year-old allogynogenetic silver crucian carp is selected as the female parent, with a tail weight of more than 600g, normal shape, silver gray and rich luster, and the local male carp (commonly known as Taihu carp) with a tail weight of 800g and 1200 grams is selected as the male parent. The ratio of the two is 1-1.5 1.

3. Parent fish cultivation: allogenic silver crucian carp and carp are cultivated in special ponds respectively. Choose fine weather to feed in winter, the feeding rate is 1-1.5%, increase the feeding rate when the water temperature reaches 5 ℃, and gradually increase the feeding rate from 1.5% to 3%, mainly pellet feed. The fish pond maintains good water quality, sufficient dissolved oxygen and transparency of about 30 cm. Raise the water level to 1.5 meters when overwintering, so that the parent fish can survive the winter safely. After the beginning of spring, choose fine weather to change water, change water 10-15 cm deep every day. When the water temperature reaches 12 ℃, lower the water level to 60-80 cm.

 
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