Fall‐Winter Growth of Young Channel Catfish in Response to Quantity and Source of Dietary Lipid

摘要: Abstract Age-0 channel catfish Ictalurus punctatus demonstrated no significant growth differences over 20 weeks during fall and winter when fed, in indoor tanks, semipurified diets containing 6, 8, 10, 12, or 14% lipid the form of beef tallow, soybean oil, fish oil. Fish on 10% showed a tendency toward best within each dietary group but well defined optimum level was found. Carcass percentages, fatty acid patterns were similar among offered same source, regardless percentage diet. Striking such acids as 14:0, 18:1ω9, 18:2ω6, 18:3ω3, 20:5ω3, 22:5ω3, 22:6ω3 reflected sources.