Theses and Dissertations


Title: Interrelationships between quantity and quality of protein in feeds for channel catfish in intensive pond culture

Name: Tres-Dick, Jorge

Degree: MS

Chair: Dr. Richard T. Lovell

Resides: FAA Library

University: Auburn

Location: Auburn, Alabama

Date: 1974

Pages: 52

Keywords: Protein Quantity,Protein Quality,Feeds,Channel Catfish,Intensive Culture.

Abstract:

Channel catfish were stocked in 27 one-tenth-acre ponds at the rate of 3,000 per acre and fed nine commercial-type rations containing three protein percentages and three levels of fish meal for 200 days. Overall survival for the experiment was 96.8 per cent, with 93 per cent of the fish being over 12 inches in length. Average yield per acre per treatment ranged from 2,330 to 3,030 pounds, the overall average being 2,638.14 pounds.The results indicated that satisfactory production can be obtained with all-plant rations. The 29 per cent, all-plant protein diet yielded 2,330 pounds per acre of harvestable size fish. Increasing the total protein in the all-plant rations to 36 and 43 per cent resulted in production of 2,475 and 2,640 pounds per acre. Replacing one-sixth of the plant protein with fish meal protein, at the 29 per cent protein level, increased production by 110 pounds per acre: however, replacing one-third of plant protein with fish meal protein yielded an increase of 430 pounds. At the 36 and 43 per cent total protein levels, one-sixth fish meal protein significantly (P<0.05) increased weight gains over the all-plant protein rations: however, a further increase to one-third fish meal protein did not significantly increase fish yield. Under these management conditions and current feed ingredient costs, the extra yields obtained by increasing protein level and replacing plant protein with fish meal protein were profitable.

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