The Biology and Culture of Tilapias
several systems by which earthen ponds can be manipulated to produce and remove hybrid fingerlings and fry. Lovshin (1980) descr ...
Pure genetic strains that are known to give 100% male hybrid offspring should be carefully isolated from other tilapia species a ...
Every little puddle is a potential hiding place and small fry and fingerlings can live for weeks in a footprint filled with wate ...
First Year Pure Genetic Strains spawn in laboratory I growth in laboratory or ponds up to 50 grams I Sarotherodon aureus sexing ...
The first harvest of hybrid fingerlings is 1.0 to 1.5 months after stocking the broodstock and is continued at approximately 3 w ...
CROSS SECTION k 32.00 , I.SO,l.3S 16.00 I Water' Inlet Figure 3. Design of tilapia hybrid spawning-nursery pond used in Northeas ...
pared for a new spawning period while the fry are growing in the rlursery pond below. These ponds should allow for continual pro ...
x S. hornorum hybrid grew the fastest (1.8 g/day) the S. mossambicus x S. hornorum hybrid at 1.4 glday and the S. niloticus x S. ...
'I ponds stocked with 8,960 fishlha averaging 21 g over 356days. Ponds in one treatment received 1,400 kglhalweek of cattle manu ...
Brazilian biologists (cited in Lovshin 1977) investigated the growth and production of the same all-male hybrid at higher stocki ...
Table 1. Summary of the results of culture experiments in Brazil in which all-male tilapia hybrids (Sarotherodon niloticus 9 x S ...
Table 2. Summary of results obtained with the &-male tilapia hybrid (Sarotherodon niloticus? x S. hornorurn d) cultured with ...
chicken farm. The chicken manure was 79% organic matter. After 189 days, an average of 1,350 kg/ha of fish were harvested, avera ...
hybrids are normally 30 to 50% of the total fish population and their yield is 20 to 30% of the total. In Brazil, Lovshin et al. ...
5,000 all-male tilapia treatments, respectively. The corresponding tilapia productions were 2,224, 3,045, and 3,327 kg/ha with a ...
ing pure genetic strains that give a high percentage of male hybrids takes great care and dedication on the part of hatchery wor ...
Table 3. Summary of results obtained culturing tambaqui. Colossoma macropomum, in monoculture and polyculture with the all-male ...
Table 4. The effect of female Sumtherodon niloticus stocking density on the production of all-male hybrid fingerlings (S. niloti ...
Table 2 do not appear excessive for 350-m2 ponds. Note should also be taken of the large variation in hybrid fingerlings produce ...
feeding or addition of organic fertilizer even if a small percentage of females are present. If larger fish (2 400 g) are needed ...
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