17 



by either passing people or outboard motors. The fish were 

 readily caught following their release into the lake, and the 

 technique holds oromise as a practical means for improving 

 the quality of fishing in such oublic waters. 



Similar numbers and weights of 4-inch (10.2-centimeter) channel 

 catfish were stocked in a 1-acre (0 .4-hectare^ pond at a rate 

 of 1,325 fish per acre (3,274 per hectare) and in a modified 

 raceway at a rate of 5 fish per cubic foot (177 per cubic 

 meter) . Raceway flow was about 80 gallons (303 liters) per 

 minute, providing a turnover about once every 25 minutes. 

 Pond fish were fed a sinking ration from a demand feeder; race- 

 way fish received all of the Purina trout chow they would eat 

 in 5 minutes twice daily for 5 days each week. In a volume of 

 only 262.5 cubic feet (7.43 cubic meters) the raceway fish had 

 a superior conversion ratio (1.06 vs. 1,21), and in 118 days 

 produced a standing crop as large as that produced in the 

 1-acre (0.4-hectare) pond in 132 days. 



LITEPATURE CITED 



Allen, Kenneth 0. 1972. Factors affecting growth and survival of 

 catfish reared in tanks. Presented at the Catfish Research 

 Workshop, Fourth Annual Convention Catfish Farmers of America, 

 Dallas, Texas. Mimeo, 5 pp. 



Collins, Richard A, 1970, Cage culture of catfish in reservoir 



lakes. Presented at the 24th Annual Convention of the Southern 

 Division of the American Fisheries Society and Southeastern 

 Association of Game and Fish Commissioners, Atlanta, Georgia. 

 September, 1970, 11 pp, 



Conley, Jerry M. 1972. Catfish rearing. Farm Pond Harvest 

 6(3) :17-20. 



Lewis, William M, 1969. Progress report on the feasibility of 



feeding-out c;'^.rr-;l catfish in cages. Report of the Fisheries 

 Research Laboratory, Southern Illinois University, Carbondale, 

 Illinois. Mimeo, 8 pp. 



Schmittou, H. R. 1970. Developments in the culture of channel 

 catfish, Ictalurus punctatus (Rafinesquo) , in cages suspended 

 in ponds. Southeastern Association of Game and Fish Commis- 

 sioners Proceedings for 1970. 44 pp. 



