title: Dietary phosphorus requirement of channel catfish.
abstract: Two experiments were conducted to reevaluate the dietary phosphorus requirement of fingerling channel catfish. Basal diets containing either casein with supplemental inorganic phosphorus and 0.5% total calcium or egg albumin with supplemental inorganic phosphorus and 0.75% total calcium yielded similar requirement data. Eleven-week growth, feed efficiency, serum phosphorus, bone ash, bone calcium and bon phosphorus data indicate that 0.33% apparent available dietary phosphorus is adequate for maximum growth and bone mineralization. Based on these data and previous findings, we would suggest a value of 0.4% apparent available phosphorus be used in formulating catfish feeds. The apparent availability of phosphorus from soybean meal, as determined by the chromic oxide indicator method, was 29% for channel catfish.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism; D004305:Dose-Response Relationship, Drug; D005399:Fishes / Q000254:growth & development / Q000378:metabolism*; D009751:Nutritional Requirements; D009753:Nutritive Value; D010758:Phosphorus / Q000008:administration & dosage / Q000378:metabolism*; D013025:Glycine max
chemical_list: D010758:Phosphorus; D002118:Calcium