Demonstration that Feeds Containing <1% Fishmeal Can Support Grow‐out of Large Juvenile Red Drum, Sciaenops ocellatus, and Reduce Nutrient Waste. Issue 1 (30th March 2017)

• Record Type: Journal Article
• Authors: Denson, Michael R.; Sandifer, Paul A.; Leffler, John W.; Yost, Justin; Bearden, Daniel W.; Zeigler, Thomas R.
• Is Part Of: Journal of the World Aquaculture Society. Volume 49:Issue 1(2018)
• Page Start: 141
• Page End: 154
• Publication Date: 2017-03-30
• Subjects: alternative protein sources -- enzyme additives -- fishmeal replacement -- red drum -- reduced pollution; Aquaculture -- Periodicals; 639.8
• DOI: 10.1111/jwas.12421
• Languages: English
• ISSNs: 0893-8849

Abstract

Abstract: We conducted a 16‐wk feeding trial with large juvenile red drum, Sciaenops ocellatus . Four diets were randomly assigned to six replicate tanks per treatment. Three isonitrogenous (ca. 44.5% protein) and isolipidic (ca. 14.1% lipid) extruded diets were formulated to compare a fishmeal‐based diet with diets using alternative protein sources. Diet 1 contained 19.60% fishmeal and 21.42% poultry meals as primary protein sources. Two alternative diets were formulated reducing the fishmeal to 0.61% by substituting poultry meals (33.85%) and soybean protein concentrate (11.55% in Diet 2 and 11.70% in Diet 3). Diet 3 also included Allzyme Vegpro® and Allzyme® SSF at 0.04%. Diet 4, a natural diet consisting of chopped cigar minnows, squid, and shrimp, was used as a positive control to compare growth rates of formulated feeds to near maximum growth under these culture conditions. We found that reducing the amount of fishmeal to <1% by using alternative protein sources did not affect the growth rate, survival, or health of red drum but improved assimilation of phosphorus, reduced potential release of P to the environment, and significantly lowered the amount of feeder fish needed in feed. The control diet identified performance benchmarks for future feeds development work.