Theses and Dissertations


Title: Preliminary studies on the culture of channel catfish, Ictalurus punctatus (Rafinesque), in cages and pens

Name: Scott, Jr Thomas M.

Degree: MS

Chair: Dr. John S. Dendy

Resides: FAA Library

University: Auburn

Location: Auburn, Alabama

Date: 1970

Pages: 46

Keywords: Channel Catfish,Cages,Pens.

Abstract:

Preliminary studies were conducted during 1966 in earthen ponds on the Auburn University Agricultural Experiment Station using cages and pens to culture channel catfish.One cubic meter cages constructed of hardware cloth supported by wooden frames were suspended in a 25.5-acre non-flowing, fertilized pond and stocked at rates of 25, 75, 125 and 175 fish,respectively,to evaluate the effects of density on fingerling catfish reared to harvestable sizes in cages. The maximum stocking density, 175 fish per cubic meter, was insufficient to limit production of catfish fingerlings reared to an average weight of 0.81 pound. The optimum stocking rate was determined to be higher than those used in this study. In a 0.25-acre fertilized, non-flowing pond, hardware cloth cylinders with 3-foot diameters were pushed into the mud bottom along with 2-foot depth contour to form pens. Channel catfish 7 to 10 inches in length were stocked into the pens and fed 57 days between August13 and November 5. In one set of pens Auburn No. 2, a supplemental feed, was used and fish were stocked at rates of 1, 3, 7, and 14 fish respectively per pen. In another set of pens stocked with 7 fish each, Auburn No. 2, and a commercial trout feed, and mixtures of these two were fed to catfish in different pen groups. Results were inconclusive. However, Auburn No. 2 appeared to be nutritionally inadequate for the mean carrying capacities of fish produced by stocking rates of 7 and 14 fish per pen--0.30 and 0.57 pounds per square foot. Progressive production improvements occurred with greater proportions of the trout feed used. A proportionally large improvement in survival occurred with the addition of the smallest amount of trout feed to Auburn No. 2 and may have resulted from the supplying of a nutrient that was deficient in the diet.

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