Effects of Stocking Density on Growth Performance and Parameters of <i>Pelteobagrus vachelli</i> Juveniles

YAO Qing-hua; YAN Sun-an; GUO Qing-xiong; HU Bing; LIN Qiu

doi:10.19303/j.issn.1008-0384.2018.07.004

Volume 33 Issue 7

Mar. 2019

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Article Navigation > Fujian Journal of Agricultural Sciences > 2018 > 33(7): 670-675

YAO Qing-hua, YAN Sun-an, GUO Qing-xiong, HU Bing, LIN Qiu. Effects of Stocking Density on Growth Performance and Parameters of Pelteobagrus vachelli Juveniles[J]. Fujian Journal of Agricultural Sciences, 2018, 33(7): 670-675. doi: 10.19303/j.issn.1008-0384.2018.07.004

Citation:

YAO Qing-hua, YAN Sun-an, GUO Qing-xiong, HU Bing, LIN Qiu. Effects of Stocking Density on Growth Performance and Parameters of Pelteobagrus vachelli Juveniles[J]. Fujian Journal of Agricultural Sciences, 2018, 33(7): 670-675. doi: 10.19303/j.issn.1008-0384.2018.07.004

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Effects of Stocking Density on Growth Performance and Parameters of Pelteobagrus vachelli Juveniles

doi: 10.19303/j.issn.1008-0384.2018.07.004

1.
Institute of Agricultural Quality Standards and Testing Technology Research, Fujian Academy of Agricultural Sciences/Fujian Aquatic Feed Quality Control and Inspection Station, Fuzhou, Fujian 350003, China
2.
Fujian Zhengyuan Feed Co. Ltd., Putian, Fujian 351111, China
3.
Fujian Province Key Laboratory of Special Aquatic Formula Feed, Fuqing, Fujian 350308, China

Received Date: 2018-05-09
Rev Recd Date: 2018-06-06
Publish Date: 2018-07-01

Abstract

Abstract

The purpose of this study was to investigate the effects of stocking density on growth, muscle composition and blood parameters of Pelteobagrus vachelli juveniles. A 60 day feeding trial was conducted to evaluate the effects of stocking density on growth, muscle composition and blood parameters of juvenile yellow catfish (Pelteobagrus vachelli). A total of 600 juvenile yellow catfish with an initial body weight of (25.23±0.09) g were randomly distributed into four different stocking density groups with 3 replicates per group of G1 (0.50 kg·m^-3, 20 fish·m^-3), G2 (1.01 kg·m^-3, 40 fish·m^-3), G3 (1.51 kg·m^-3, 60 fish·m^-3), G4 (2.02 kg·m^-3, 80 fish·m^-3). The results showed that the growth and feed coefficient of juvenile yellow catfish were effected significantly by stocking density (P < 0.05). Final body length, final body weight, specific growth rate and condition factor decreased with an increase in stocking density, whereas the feed coefficient showed the opposite tendency (P < 0.05). Final body length, final body weight, specific growth rate, condition factor and survive rate of fish in G1 were higher than those in G3 and G4 (P < 0.05), but the condition factor, feed coefficient and survive rate of G1 and G2 were with no significant difference(P>0.05).Muscle protein content increased significantly with the increase in stocking density, whereas muscle lipid content decreased significantly (P < 0.05). Muscle protein content of fish in G1 was lower than others, whereas the lipid content showed the opposite tendency (P < 0.05). Lower stocking density groups had higher albumin content and lysozyme activity in blood (P < 0.05), whereas glutamic-pyruvic transaminase and glutamic-oxalacetic transaminase activities showed the opposite tendency(P < 0.05). No significant difference was observed in blood total antioxidant capacity among all groups(P>0.05). In conclusion, 1.01 kg·m^-3 was considered to be a suitable stocking density for juvenile yellow catfish with an initial body weight of (25.23±0.09) g.
- Pelteobagrus vachelli,
- stocking density,
- growth,
- muscle composition,
- biochemical parameter

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References(31)

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