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Recent Advances in Channel Catfish Nutrition and Feeding Research (pp. 263-277) $100.00
Authors:  (Menghe H. Li, Edwin H. Robinson, Thad Cochran National Warmwater Aquaculture Center, Mississippi State University, USA)
Abstract:
Channel catfish Ictalurus punctatus is the leading aquaculture species in the United
States with an annual production of approximately 275,000 metric tons. Extensive
research has been conducted on the nutrition and feeding of this species and as a result,
its nutrient requirements and feeding characteristics are well documented. Findings from
laboratory and field studies conducted over the past few years have made a significant
contribution to the existing channel catfish nutrition database, which is routinely used in
the formulation of cost-effective feeds. Recent research provides a better understanding
of the relationship between dietary protein and digestible energy and their effects on fish
growth, processed yield, and body composition. Research has also shown that traditional
feed ingredients can be replaced with less expensive alternative feedstuffs to reduce feed
cost. For example, marine fish meal can be reduced or replaced with other animal protein
sources, such as poultry by-product meal and meat and bone/blood meal. Soybean meal
can be partially replaced with a combination of distillers dried grains with solubles,
cottonseed meal, and supplemental lysine. Inorganic phosphorus supplements can be
completely replaced with phytase enzymes without affecting fish growth and bone
mineralization. While channel catfish are more tolerant to aflatoxins and deoxynivalenol,
they appear to be as sensitive to T-2 toxin as rainbow trout. Channel catfish are sensitive
to ochratoxin A in their diet. Various feeding strategies have been evaluated to optimize
production efficiency under various culture conditions. Feeding channel catfish in food
fish production ponds once daily to apparent satiation (without adversely affecting water
quality) supports maximum growth. However, depending on water temperature and water
quality and on the health of the fish, it may be prudent to restrict the daily feed allowance
or to feed less frequently than daily. 


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Recent Advances in Channel Catfish Nutrition and Feeding Research (pp. 263-277)