Waste treatment capacity of raft hydroponic lettuce production in an integrated fish culture system and the contribution of lettuce to treatment capacity /
(132 fish) and 9.4 kg/M3 (220 fish); each replicated three
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1995.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | (132 fish) and 9.4 kg/M3 (220 fish); each replicated three (170 fish). Three systems were planted with Paris Island a 1.9 m3 clarifier, and two, 2.1 M3 hydroponic tanks (6.03 m Ammonium, nitrite, nitrate, pH, lettuce biomass production, an integrated fish culture system and 2.) the contribution of both treatments and increased weekly at approximately 1 documented treatment capacity. Six identical integrated during the 13-week experiment. Mean lettuce production (347 fish). In both treatments, fish biomass increased 100% g/fish/day. Ammonium, nitrite, nitrate, pH, lettuce biomass, g/m2/day in low feed and 291 g/m2/day in high feed) was below growing area/day was reached in week eleven in both increased above 2 mg/litre in the high feed system (220 L x 1. 19 m W x 0.28 m D). In the first experiment male lettuce and three received no lettuce. Feeding and lettuce lettuce plants, Lactuca saliva, cv. Paris Island, to the maximum sustainable feeding rate (highest feed input with maximum sustainable feeding rate of 186 g/M2 of hydroponic mg/litre. Systems planted with lettuce removed about 25% more of both N03-N and total dissolved solids than did the NH4+ spikes more effectively than unplanted systems, of 195 g/M2 of hydroponic growing area/day was reached in Oreochromis niloticus were stocked at two densities 5.6 kg/M3 potential production rates due to solids accumulation on presumably through direct plant uptake. protocols were the same as in the first experiment. roots. In the second experiment, all six systems were stocked systems were used, each consisting of a 12.8 m3 rearing tank, temperature, fish weight, BOD and COD were monitored. A temperature, fish weight, BOD, and COD were monitored. A times. Feed was supplied at 0.93% of mean body weight in total ammonia nitrogen <5 mg/litre and nitrite <2 mg/litre) treatment capacity of raft hydroponic lettuce production in treatments when N02-N concentrations increased above 2 Two experiments were conducted to determine: 1.) the waste unplanted systems. Planted systems were also able to dampen week nine of the experiment when N02-N concentrations with male Oreochromis niloticus at a density of 14.5 kg m3 |
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| Item Description: | "Major subject: Wildlife and Fisheries Sciences". Vita. |
| Physical Description: | xii, 67 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |