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Title: | Effects of stocking density, feeding, fertilization and combined fertilization-feeding on the performances of striped grey mullet (Mugil cephalus L.) fingerlings in brackishwater pond rearing systems |
Other Titles: | Not Available |
Authors: | G. Biswas Debasis De A. R. Thirunavukkarasu M. Natarajan J. K. Sundaray M. Kailasam Prem Kumar T. K. Ghoshal A. G. Ponniah A. Sarkar |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::National Academy of Agricultural Research and Management |
Published/ Complete Date: | 2012-03-29 |
Project Code: | Not Available |
Keywords: | Stocking density Feeding Fertilization Striped grey mullet Brackishwater pond Seed rearing GROWTH-PERFORMANCE FOOD WATER EFFICIENCY JUVENILES FREQUENCY SALINITY HISTORY QUALITY BIOLOGY |
Publisher: | AQUACULTURE; ELSEVIER; RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS; AMSTERDAM |
Citation: | Not Available |
Series/Report no.: | Not Available |
Abstract/Description: | Growth, survival, biomass production and body composition of striped grey mullet (Mugil cephalus L.) fingerlings were evaluated in two pond experimental trials as a function of two stocking densities and three management systems in brackishwater pond rearing. The three management systems tested were feeding, fertilization and combined fertilization-feeding. The Experiment 1 had a 2 x 2 factorial design with two levels of stocking density and two types of pond management system (feeding and fertilization) resulting in four treatments in triplicates: stocking density 1 + feeding (S1F1), stocking density 1 + fertilization (S1F2), stocking density 2 + feeding (S2F1) and stocking density 2 + fertilization (S2F2). Twelve ponds (600 m2 each) were stocked with grey mullet fry (0.17 +/- 0.02 g/23.81 +/- 0.6 mm) at 7500 number ha(-1) in treatments S1F1, and S1F2 and at 15,000 number ha(-1) in treatments S2F1, and S2F2. In Experiment 2, three different pond management systems evaluated as three treatments (in triplicate ponds) were FR: fingerling rearing with fertilization; FD: fingerling rearing with feeding and F: fingerling rearing with combination of fertilization + feeding. Nine ponds (600 m(2) each) under the three treatments were stocked with grey mullet fry (0.55 +/- 0.08 g/36.0 +/- 2.1 mm) at 15,000 number ha(-1). In S1F1, S2F1, FD and F, formulated feed containing 27.5% crude protein was provided at 3.5-20% body weight daily, whereas, in S1F2, S2F2, FR and F systems, ponds were fertilized fortnightly with cattle manure, urea and single super phosphate at 500, 30 and 30 kg ha(-1), respectively. In Experiment 1, although stocking density and application of feed or fertilization did not affect the growth parameters, survival and apparent feed conversion ratio (P > 0.05) of grey mullet, coefficient of variation at harvest weight (CVhw) and total harvested biomass were influenced by feeding or fertilization (P < 0.05). In Experiment 2, significantly better growth. lower CVhw and higher total harvested fish biomass were obtained in fishes of FF compared with that of FR and FD (P < 0.05). From the pond trials it can be concluded that combined fertilization-feeding system with a stocking density of 15,000 fry ha(-1) would be appropriate for production of striped grey mullet fingerlings in brackishwater ponds. The present findings indicate feasibility of establishing M. cephalus seed rearing practice using a cost-effective and resource-efficient approach. (C) 2012 Elsevier B.V. All rights reserved. |
Description: | Not Available |
ISBN: | Not Available |
ISSN: | 0044-8486 |
Type(s) of content: | Article |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Aquaculture |
NAAS Rating: | 9.22 |
Volume No.: | 338 |
Page Number: | 284-292 |
Name of the Division/Regional Station: | Not Available |
Source, DOI or any other URL: | http://dx.doi.org/10.1016/j.aquaculture.2012.02.004 PubMed id: Not Available Web of Science ID: WOS:000304290700037 |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/43271 |
Appears in Collections: | AEdu-NAARM-Publication |
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