|
Investigation and comparison growth rate of fish in two fish culture system (one- crop &two-crop at year)
|
Ebrahim Minabi   , GHolamHosein Mohamadi , GHolamreza Eskandari , Mehran Javaheri , Reza Hakimi , Khalil Minabi |
| Faculty of Science and Research Branch, Azad Universit |
|
|
Abstract: (8577 Views) |
| This experiment was conducted in earthen ponds of the Azadegan fish culture site, Ahvaz, Iran. In this method (two - crop at year) in first stage pond were stocked at rate of 1000 silver carp fingerlings (92. 30±2.77 g), 1000 common carp (10.47±2.64g), 200 grass carp (101.43±14.92g), 200 bighead carp (107.17±14.26g) per hec. in second stage, pond were stocked at rate of 1000 silver carp fingerlings (130.80±5.77 g), 1200 common carp (9.57±2.45g), 200 grass carp (118.92±12.95g), 200 bighead carp (161.13±9.43g) per hec. In common method (one crop at year) pond were stocked at rate of 1200 silver carp fingerlings (71.23±2.62g), 1200 common carp (2±0.5g), 200 grass carp (75.07±4.42g), 200 bighead carp (79.70±3.21g) per hec. After culturing period in both systems (130, 215, 332 days) crop were harvested. The results showed that production of two-crop method was 7151 Kg/ha and in the other method was 6516 Kg/ha. The profits of two-crop system was 77196000 rials(≈8345 US$) while in the other method (one crop in year) was 37008000 rials(≈4000 US$). |
|
| Keywords: Hilsa shad, Tenalosa ilisha, mortality, population dynamic |
|
|
Full-Text [PDF 926 kb]
(14768 Downloads)
|
Type of Study: Research |
Subject:
Special
Received: 2014/02/1 | Accepted: 2014/02/1 | Published: 2014/02/1
|
|
|
|
|
|
|
| Send email to the article author |
|
|
|
| Add your comments about this article |
|
|
|
