Artificial Propagation And Fry Rearing Technology Of Elopichthys Bambusa Richardson

Elopichthys bambusa Richardson Belongs to cyprinidae, Leuciscinae .It is an important ecomomic fish in river and lake of china. The artificial culture of Elopichthys bambusa Richardson is recognized for its fine characteristics and delicious fish meat. Because of reduction of wild stocks, it is pivotal to adopt artificial propagation on large scale to resolve the problem.Broodfish in experimentation came from Jinkou of Yangtse Rive in wuhan , Futou lake attaching and Lu lake. After 6 month temporary or two years artificial culture ,we took artificial propatigate in 13 group 5 batch. We did a comparative experiment on pond-strengthen-bred natural Elopichthys bambusa Richardson to find the suitable dosage of the drug for the first time. The conclusion was that PG+HCG+LRH-A₂ has obvious advantage compared with the other drugs. We got the number of 1240 ten thousand egg, 1003 ten thousand oosperm , 523 ten thousand fry, it averaged 95.4 ten thousand egg , 77.2 ten thousand oosperm, 40.2 ten thousand fry in two years experiment .The method and disciplinarian of artificial propatigate has been studied. Induced spawning rate ,fertilization rate and hatching rate were 80%-100%, 30.4%-88.5%, 86.3%-88.8% respectively, at the same time the relating factor in artificial propatigate has been discussed.The fry out of ring was throwed into the test pond, the fry of 0.7-0.8cm growed to the full length of 2.5-3.0cm in 25-30 days and 5.0-10.6 ten thousands per 666.7m2, the survival ratio was 66.6 -82.6%; in the same condition , the fry of 2.5cm growed to the full length of 6.5-8.0cm in 25 days and 0.2-0.4 ten thousands per 666.7m , the survival ratio was 85.0-88.3%. The individual growth was rapid ,and the difference was little in sufficient food .The growth is related with activeness and intensity of eating...