Abstract
AbstractThe effects of stocking density on food‐size largemouth bass (LMB),Micropterus salmoides, production (>0.5 kg) were evaluated in a 2‐yr study by stockingLMBfingerlings (mean weight = 57 g/fish) in 0.1‐ha earthen ponds at rates of 6175, 12,350, or 18,525 fish/ha. Gross yields increased from 3989 to 9096 kg/ha as stocking density increased. No significant differences were observed in survival rates (range of 65–74%) due to density. Maximum feed consumption occurred at water temperatures of 27–30 C. Feed conversion ratio (FCR) and mean harvest weight were significantly different (P < 0.05) among densities, with the lowestFCRand the lowest mean weight found at the highest density (18,525 fish/ha). At harvest,LMBwere considered to be in good condition with relative weight (Wr) values of 123–124. Dressout yield percentages were 61–62% for whole‐dressedLMBand 34–35% for shank filets.LMBgrew well and reached a size adequate for targeted shank filet sizes. However, the production costs of $7.26–$9.34/kg mean thatLMBproduction for a filet market is unlikely to be feasible. Research to lowerLMBfingerling and feed costs and improvedFCRwould contribute to improved economic feasibility.
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