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United States Department of Agriculture

Agricultural Research Service

Research Project: CATFISH GENETICS, BREEDING, AND PHYSIOLOGY

Location: Warmwater Aquaculture Research Unit

Title: Effects of Bio-Mos on growth and survival of channel catfish challenged with Edwardsiella ictaluri

Authors
item Peterson, Brian
item Bramble, T - ALLTECH, INC.
item Manning, B - MISSISSIPPI STATE UNIV.

Submitted to: Journal of the World Aquaculture Society
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: July 23, 2008
Publication Date: February 2, 2010
Citation: Peterson, B.C., Bramble, T.C., Manning, B.B. 2010. Effects of Bio-Mos on growth and survival of channel catfish challenged with Edwardsiella ictaluri. Journal of the World Aquaculture Society. 41:149-155.

Interpretive Summary: Research examined the effects of the prebiotic Bio-Mos on growth and disease resistance in channel catfish. Catfish were fed either a Con-Sink (36% crude protein (CP) diet) or Bio-Mos-Sink (36% CP diet supplemented with Bio-Mos) sinking pellet for 6 wks. followed by a bacterial challenge. Weight gain and feed efficiency were similar while survival was higher in fish fed Bio-Mos. The results show that supplementing Bio-Mos into diets may provide another strategy to control enteric septicemia of catfish (ESC) in channel catfish.

Technical Abstract: Research examined the effects of Bio-Mos on growth and disease resistance in channel catfish. Catfish were fed either a Con-Sink (36% crude protein (CP) diet) or Bio-Mos-Sink (36% CP diet with Bio-Mos supplemented at 2 g/kg) sinking pellet for 6 wks. followed by an E. ictaluri challenge. Growth performance was similar while survival after E. ictaluri challenge was higher (P < 0.05) in fish fed Bio-Mos. In a second study, catfish were fed a Con-Float (32% CP diet) or Bio-Mos-Float (32% CP diet with Bio-Mos supplemented at 2 g/kg) floating pellet for 4 wks. followed by an E. ictaluri challenge. Growth performance and survival were similar between treatments. In a third study, catfish were fed a Con-Sink, Con-Float, Bio-Mos-Sink, or Bio-Mos-Float diet for 6 wks. followed by an E. ictaluri challenge. Fish fed both 36% CP diets gained more weight (P < 0.001) compared to fish that consumed 32% CP diets. Survival after E. ictaluri challenge was higher (P < 0.01) in fish fed Bio-Mos-Sink compared to the other treatments. The results also show that Bio-Mos improves resistance to E. ictaluri when added to a sinking diet. Supplementing Bio-Mos into diets may provide another strategy to control ESC in catfish.

Last Modified: 4/20/2014
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