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The high temperature and pressure achieved during cooking extrusion has been shown to affect nutrient availability. To determine the effects of extrusion temperature on the efficacy of mannanoligosaccharide Bio-Mos? in channel catfish, 4 experimental diets were fed for 9 wks and then challenged with Edwardsiella ictaluri bacterium. Catfish 9.9 ± 0.4 g were randomly assigned to the following treatments: Low-None low temperature process without additive; High-None high temperature process without additive; Low-Bio low temperature process with 4 g-kg diet Bio-Mos?; High-Bio high temperature process with 4 g-kg diet Bio-Mos?. Although specific growth rate and food conversion ratio were similar among treatments P > 0.10, survival after E. ictaluri challenge was highest P < 0.01 for the fish fed Low-Bio. Increasing the extrusion temperature of the Bio-Mos?-laden feed resulted in survival numbers similar to diets without Bio-Mos?. Extruding catfish diets supplemented with Bio-Mos? at lower temperatures may provide another strategy to control enteric septicemia of catfish.

KEYWORDS

Catfish; Mannanoligosaccharides; Growth; Disease

Cite this paper

Peterson, B. , Booth, N. , Barrows, F. and Manning, B. 2012 Improved survival in channel catfish fed mannanoligosaccharides in an extruded diet. Open Journal of Animal Sciences, 2, 57-61. doi: 10.4236-ojas.2012.22009.





Autor: Brian C. Peterson, Natha J. Booth, Frederic T. Barrows, Bruce B. Manning

Fuente: http://www.scirp.org/



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