Abstract
Common carp, Cyprinus carpio (L.) spawn was reared in polyhouse and control (Open) nursery ponds environment during January-February, 2002. The ponds were prepared as per the recommended practices. Spawn was stocked @ 5 million/ha in all the experimental ponds. The supplementary feed (rice bran, groundnut oilcake and wheat flour in the ratio of 1:1:1) was given @ 4, 6 and 8 times of initial body weight of spawn during 1st, 2nd and 3rd weeks, respectively. The biotic and abiotic variables were monitored at regular intervals. The temperature in the polyhouse nursery was recorded to be 4-6°C higher than open nursery. After 20 days of rearing in control and polyhouse ponds, mean growth and survival of fry were 19.7 mm/0.139 g (40.2%) and 21.95 mm/0.202 g (61.5%), respectively. The planktonic density was higher in polyhouse ponds than those of control ponds. The observation revealed that the growth and survival of fish seed were remarkably higher in polyhouse ponds than the open ones in cooler period of the year.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
