Submit or Track your Manuscript LOG-IN

Analysis of Growth, Nutrition and Economic Profitability of Gibel Carp (Carassius auratus gibelio ♀ × C. carpio ♂) Cultured in Zero-water Exchange System

Analysis of Growth, Nutrition and Economic Profitability of Gibel Carp (Carassius auratus gibelio ♀ × C. carpio ♂) Cultured in Zero-water Exchange System

Pingping Cang1, Mingming Zhang1, Guo Qiao1,Qirui Sun1, Dehai Xu3, Qiang Li1, Xinghua Yuan4 and Wenbin Liu2,

1Yancheng Institute of Technology, Yancheng 224051, Jiangsu Province, China
2Key Lab of Aquatic Animal Nutrition and Feed Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
3U.S. Department of Agriculture, Agricultural Research Service, Aquatic Animal Health Research Unit, 990 Wire Road, Auburn, AL 36832, USA
4Key Laboratory of Freshwater Fisheries, Freshwater Fishery Research Center, Chinese Academy of Fishery Sciences, Ministry of Agriculture, Wuxi 214081, Jiangsu Province, China

Pingping Cang and Mingming Zhang have contributed equally to this work and should be considered co-first authors.

*      Corresponding authors: wbliu@njau.edu.cn

 

ABSTRACT

Gibel carp (Carassius auratus gibelio ♀ × C. carpio ♂), a representative mudflat aquaculture species, was used to evaluate the effects of biofloc technology (BFT) on growth, nutrition and economic profitability in mudflat fish aquaculture. A 60-d experiment was conducted in zero-water exchange BFT system. The results demonstrated that weight gain (WG), specific growth (SG) and survival in BFT group were 133.94%, 1.20% day-1 and 90.0%, respectively. In control group with a 1/4-1/3 daily water exchange, WG, SG and survival were significantly lower than those in BFT group. There were no statistical differences in crude protein (CP), crude lipid (CL) and ash contents of gibel carp muscle between BFT and control group at the end of experiment (P >0.05). The essential amino acids, non-essential amino acids and total amino acids contents of gibel carp muscle in BFT group were higher than those in control group. Bioflocs were composed with 29.8% CP, 3.2% CL and 19.1% ash at day 60. CP content was appropriate, and LP was lower for gibel carp. Economic profitability analysis included analysis on gross revenue, break-even production, net present value, payback time, degree of operating leverage, and environmental costs under experimental conditions was conducted. Analysis results revealed that BFT system was more effective than the control system with water exchange in gibel carp culture, suggesting that BFT system could be successfully used in gibel carp aquaculture.
 

To share on other social networks, click on P-share. What are these?

Pakistan Journal of Zoology

August

Vol. 51, Iss. 4, Pages 1203-1598

Featuring

Click here for more

Subscribe Today

Receive free updates on new articles, opportunities and benefits


Subscribe Unsubscribe