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

CLC Number: 

• S966.12