Theses and Dissertations


Title: Production of the Louisiana red crawfish Procambarus Clarkii (Girard), in ponds

Name: Broom, James Gerald

Degree: MS

Chair: Dr. E. W. Shell

Resides: FAA Library

University: Auburn

Location: Auburn, Alabama

Date: 1961

Pages: 46

Keywords: Crawfish,Louisiana red crawfish,Procambarus Clarkii,Crawfish production,Crayfish,Feed conversion,Gear efficiency.

Abstract:

Four 0.005-acre concrete ponds and three 0.0015-acre plastic pools were stocked with young Procambarus clarkii in March at rates ranging from 17,000 to 34,000 per acre. After 60 days these ponds were drained and from 600 to 1600 pounds per acre were recovered. The crawfish increased their stocked weight from 2.0 to 4.7 times and the survival rate ranged from 44 to 96 percent.Two feeding experiments on immature crawfish were conducted in aquaria. The first experiment, of 60 days duration, compared the feed conversion ratios of Auburn #2 pellets, Nell's meat diet fish food, leaves from Elodea densa and ground Tilapia nilotica. Tilapia gave the best food conversion. The second feeding experiment, of 49 days duration, compared ground Tilapia and ground Tilapia plus Elodea. The food conversion for Tilapia alone was 1.50 and for Tilapia plus Elodea 0.89.A square lift net, a round lift net and a trap net were tested for efficiency of catch. The square lift net gave the best results when fished for short periods of time in shallow water. Tilapia nilotica and threadfin shad were compared as baits in 10 trap nets. Both baits proved equally effective.

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