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亲虾越冬需历经5个多月时间,稍有疏忽或不慎,就会造成育苗工作的被动,影响当年生产效益。笔者于2001～2002年度在日照市涛雒镇从事亲虾越冬及育苗工作中,有针对性地对10多家亲虾越冬单位作了深入调查和探讨,发现许多因技术措施不当而导致亲虾越冬成活率低和亲虾怀卵量少、产卵不集中、产卵孵化率偏低等问题,严重影响了生产效益。下面介绍亲虾越冬需采取的科学措施:
Overwintering broodstock need to go through more than 5 months time, a slight negligence or carelessness, it will result in nursery work is passive, affecting the production efficiency of the year. In 2001-2002, the author engaged in overwintering and seedling breeding of broodstock in Taoyuan Town, Rizhao City, and conducted in-depth investigation and discussion on more than 10 units of overwintering units of broodstock, and found that many broodstock due to improper technical measures Low winter survival rate and broiler less fecundity, spawning, spawning hatch rate is low and other issues, seriously affecting the production efficiency. The following describes the scientific measures adopted by broodstock overwintering: