摘要： 比较研究克氏原螯虾两种稻田不同育苗、养殖模式,即在稻虾轮作中一种是稻田投放亲本虾自行繁殖育苗,自然越冬养殖即A模式;另一种是稻田搭建育苗大棚保温越冬养殖即B模式。从当年10月份至翌年3月份,测定包括产卵孵化的时间和比例、幼虾生长速度、成虾规格比例以及成本效益等指标,评估两种模式的养殖效果。结果表明:模式B较模式A亲虾产卵孵化时间明显提前,比例明显提高,幼虾生长速度加快,差异显著。6月份成虾起捕抽样统计,A模式30 g以上占30.8%,20～30 g占45.5%,20 g以下占23.7%,B模式30 g以上占52.6%,20～30 g占30.9%,20 g以下占16.5%,表明B模式的养殖效果明显优于A模式。试验同时进行了几种投饲模式的养殖比较,显示投喂人工颗粒饲料搭配小杂鱼或单独投喂小杂鱼其饲养效果要优于单独投喂人工颗粒饲料组。根据不同养殖模式的比较研究从而确定稻田克氏原螯虾养殖科学合理的苗种投放、养殖生态环境以及饲料投喂模式,为克氏原螯虾养殖的规模化、产业化提供科学合理的推广模式、生产实践经验和科学理论依据。

关键词: 克氏原螯虾, 稻田养殖, 模式

Abstract: Compaire two different models about paddyfiled breeding aquatics of crayfish,i.e.the model A,putting parents crayfish to paddyfield,increase and breeding unartificial,live throught the winter natural.the model B,setting up breeding canopies in paddyfield for reproducing and throught winter warmly.From Oct.to the next Mar.,mensurating the series of indexes including spawning time and rate,baby crayfish growing speed,the size and rate at the end of harvest time,the breeding cost and so on,to evaluate two breeding models effect.The results show that the model B is better than the model A evident,the time of the parents crayfish spawn move up,the spawning rate heighten,the growing speed of baby crayfish quicken,sampling stat.at the harvest time in jun.,in model A,the rate above 30 g is 30.8%,20-30 g is 45.5%,below 20 g is 23.7%,in model B,the rate above 30 g is 52.6%,20~30 g is 30.9%,below 20 g is 16.5%,it indicates that the model B outgoes the model A.The study also compaire the effects of the different feeds sorts,the small fish mixed manpower feedstuff or the small fish singleness are better than the manpower feedstuff singleness.So study the different breeding models of crayfish to confirm to put in how many the reasonable young number,breeding entironment and feeding modes,the study can to provide practice experiences and science gist for breed aquatics cosmically of crayfish.

Key words: Crayfish, Paddyfield breeding aquatics, Models

中图分类号: 

• S966.12