This study evaluated a commercially available prebiotics and probiotics under conditions simulating commercial production in hybrid catfish. Results showed that the various dietary treatments did not have any significant effects on processing characteristics or composition.
Brian C. Peterson
Lab studies with channel catfish and rainbow trout have found that phytogenic feed additives like essential oils can help improve weight gain, feed conversion and immunity to disease.
Essential oils are linked to livestock performance gains. In research with channel catfish, inclusion resulted in greater feed consumption and weight gain.
As the demand for aquaculture products increases, so does the search for environmentally friendly alternatives to antibiotics. Alternatives to antibiotics include dietary prebiotics, probiotics and synbiotics.
USDA and partners are developing channel catfish that exhibit superior growth, fillet yield and resistance to enteric septicemia. Although ongoing research continues to select the USDA lines for better performance, studies comparing the strains have been inconclusive.
Experiments by the authors showed that the gene activity of the brain neurotransmitter CART changed in catfish in response to feed intake.
Stress hormone axes could be used as markers for selective breeding. Researchers see a negative correlation between weight gain and cortisol response to acute stress.