Resources

Description

The results from the trials performed during 2007 for seabass indicated that the species is more sensitive to fishmeal/fishoil replacement than Gilthead seabream. In the treatments where FM was providing 35% of the protein, daily growth rate and food conversion were negatively affected compared to a control diet containing 65% FM protein. It was concluded that 40% FM protein was the main focus for the formulations of the 2008 program.

Language
English

Author
United States Soybean Export Council
Description

As marine ingredient levels are reduced in aquafeed, supplementation with low levels of taurine may be required to optimize production. Taurine may not only improve growth and performance, but also is required to reduce nutritional diseases such as green liver disease and low hematocrit levels in some fish. Taurine is authorized for fish feed in all species in the European Union and China, but not the United States.

Language
English

Author
M. Rhodes, W. Rossi, Jr., T. Hanson, Ph.D., D. Allen Davis, Ph.D.
Language
English

Date Published
October 25, 2015

Author
United States Soybean Export Council
Language
English

Date Published
October 24, 2015

Author
United States Soybean Export Council
Description

The overall objective of this project is to build demand for U.S. soy in aquaculture markets by developing soy based feeds for White seabass (WSB; Atractoscion nobilis) and California yellowtail (YT; Seriola lalandi) and striped Bass (SB; Morone saxatilis).

Language
English

Date Published
February 28, 2015

Author
United States Soybean Export Council
Language
English

Date Published
October 24, 2014

Author
Dr Mark Booth
Description

The overall objective of this project is to build demand for U.S. soy in aquaculture markets by developing soy based feeds for White seabass (WSB; Atractoscion nobilis) and California yellowtail (YT; Seriola lalandi) and striped Bass (SB; Morone saxatilis).

Language
English

Date Published
October 25, 2014

Author
Mark Drawbridge
Language
English

Date Published
October 25, 2013

Author
Dr Mark Booth
Language
English

Date Published
October 29, 2012

Author
Mark Drawbridge
Language
English

Date Published
October 29, 2012

Author
Mark Drawbridge
Language
English

Date Published
October 29, 2011

Author
M.A. Booth, G.L. Allan, I. Russell & M. Elkins
Language
English

Date Published
October 29, 2011

Author
Mark Drawbridge
Description

The ultimate goal of the project will be to advance practical diet development for this white seabass (WSB). This is important for both the culture of this species for stock enhancement as well as the great potential to expand the culture of this species commercially. The specific objectives of this research will be to: 1) Evaluate the response of WSB to a modification of the existing commercial diet being feed to WSB, 2) Evaluate the response of WSB to a diet with increasing levels of soy protein concentrate, 3) Evaluate the response of WSB to a diet with increasing levels of soy oil as a fish oil replacement.

Language
English

Date Published
October 29, 2008

Author
Mark Drawbridge Allen Davis2 Dave Jirsa
Language
English

Date Published
October 30, 2007

Author
United States Soybean Export Council
Description

Weaning of 74-g Japanese sea bass (Lateolabrax japonicus) from trash fish to extruded feed, followed by growout to market size on extruded feed, was demonstrated in a cage feeding trial at Longmen Town, Qingzhou City, Guangxi Province, China. Sea bass that had only been fed with trash fish were stocked in three, 6.4-m3 cages at a density of 156 fish per m3 and weaned from trash fish to extruded feed over a period of one week. After weaning to extruded feed, the sea bass were fed to satiation twice daily with a 43/12 extruded, floating marine fish feed formulated by ASA. Dehulled soybean meal was used as a partial replacement for fishmeal in the 43/12 feed. Sea bass grew from 74 g to 505 g in 144 days on the ASA feed, with an average FCR of 1.31:1. Average fish carrying capacity at harvest was 72 kg/m3 of cage. The average fish survival rate was 91.1%. Net economic return and return on investment for the trial were RMB 714/m3 and 82.2%, respectively. Sea bass weaned from trash fish to extruded feed without difficulty and exhibited good production performance on the extruded feed following weaning. Feed conversion efficiency with the ASA 43/12 feed, which contained 35% dehulled soybean meal by weight, was significantly lower than that obtained with trash fish. Feed cost per kilogram of fish growth with the ASA extruded feed was RMB 6.29, which was substantially below the cost of producing sea bass with trash fish. Sea bass demonstrated a high degree of tolerance for low salinity water conditions that prevailed at the Longmen site throughout the duration of the feeding trial.

Language
English

Date Published
October 31, 2001

Author
ichael C. Cremer, Zhang Jian and Hsiang Pin Lan
Description

Japanese sea bass (Lateolabrax japonicus) growth in cages was evaluated from small fingerling to market size during the 1999 and 2000 production seasons at Nan Ji Island along the east coast of China. Growth from fingerling to sub-market size was evaluated in 1999 with soymeal-based and fishmeal-based feed rations formulated to contain 43% protein and 12% fat, and from sub-market to market size in 2000 with the 43/12 soymeal-based feed ration. The soymeal- and fishmeal-based rations were formulated to be isonitrogenous and isocaloric and were fed in an extruded pellet form. In June 1999, fish were stocked in 8.0-m3 cages at 350 fish per m3 and fed for 153 days. Sea bass grew from 3 g to 297g with the soymeal-based ration, and from 3 g to 289 g with the fishmeal-based ration. There was no significant difference (P>0.05) in fish growth or feed conversion efficiency with the two feeds. FCR averaged 1.53:1 and 1.55:1 for the soymeal- and fishmeal-based rations, respectively. Survival averaged 50% for all cages and treatments. The sea bass were over-wintered and restocked in 8.0-m3 cages at 175 fish per m3 in late April 2000. Sea bass grew from 302 g to 527 g in 90 days on the soymeal-based ration, with an average FCR of 1.54:1. Fish survival averaged 93%. Gross fish production averaged 85.9 kg/m3. Net profit was RMB 28,559 for the three trial cages, or RMB 1,190/m3, at an August 2000 market price of RMB 36/kg.

Language
English

Date Published
October 24, 2000

Author
Michael C. Cremer, Zhang Jian and Zhou Enhua
Description

Japanese sea bass (Lateolabrax japonicus) growth in cages was evaluated from fingerling to sub-market size with extruded pellet and fresh fish rations in an ASA feeding trial at Xiangshan, Ningbo along the coast of Zhejiang Province, China. The extruded feed was a soymeal-based ration containing 43% crude protein and 12% fat and fed in extruded, floating pellet form. Fresh fish was fed in chopped form. Sea bass fingerlings were stocked in 8.0-m3 cages at 200 fish per m3. Sea bass grew from 10.6 g to 178.3 g in 102 days on the ASA extruded feed, with an FRC of 1.82:1, and from 11.0 g to 178.3 g in 102 days on the fresh fish ration, with an FCR of 6.78:1. Gross production averaged 31 kg/m3 with the extruded feed and 29.6 kg/m3 with the fresh fish ration. Net income and ROI were RMB 478/m3 and 62.7%, respectively, for sea bass fed the extruded ASA feed, and RMB 341/m3 and 40.4% for sea bass fed the fresh fish diet. Feed cost per kilogram of fish growth was RMB 9.46 with the ASA feed and RMB 14.92 with the fresh fish diet. Results demonstrated a 40% higher net income, 55% higher ROI, and 37% lower feed cost with the soymeal-based extruded feed than with a traditional fresh fish diet. The added benefits of quality consistency, less nutrient loading of the aquatic environment, ease in shipping and storing, and absence of potential pathogens make manufactured feed a better choice than fresh fish for feeding Japanese sea bass.

Language
English

Date Published
October 31, 2000

Author
Michael C. Cremer, Zhang Jian and Zhou Enhua
Description

The American Soybean Association (ASA), in cooperation with the China National Fisheries Extension Center (NEC) and the Guangxi Provincial Fisheries Extension Station, conducted cage feeding trials with red drum (Sciaenops ocellata), Japanese sea bass (Lateolabrax japonicus), and blackfin sea bream (Acanthopagrus sp.) at Longmen Town, Qingzhou City, Beihai in 2000. The objective of the trials was to demonstrate that sub-market size fish of each of the three test species could be weaned from a fresh fish diet to a soymeal-based, extruded feed and economically grown to market size on the extruded feed.

Language
English

Date Published
October 31, 2000

Author
Michael C. Cremer, Zhang Jian and Zhou Enhua