@article{Rakocy:261606,
      recid = {261606},
      author = {Rakocy, James E.  and Nair, Ayyappan },
      title = {Tilapia Fry and Fingerling Production in Small Tanks},
      address = {1984-10-21},
      number = {1975-2017-3534},
      pages = {8},
      year = {1984},
      abstract = {Two experiments were conducted co evaluate the use of  small tanks as a hatchery for the production of tilapia fry  and fingerlings. The effect of stocking density of brood  fish on fry production was evaluated using a sex ratio of  four females to one male. Brood fish (Tilapia aurea) were  stocked at rates of 2.7, 5.4 and 8.1 Fish/m2 in nylon  spawning nets (hapas) suspended in tanks. Fry were  collected seven times at 2-week intervals. Mean fry  production was 12.2, 15.1 and 23.8/m2/hapa/day or 5.3, 3.9  and 3.8/female/day, respectively. The fry were stocked at  races of 26, 52, 78, 104, 130 and 155/m2 to determine the  optimum rate for fingerling production. The fry were fed  four times daily for 63 days. The daily feeding rate was  15% of initial body weight for three weeks followed by  weekly adjustments to 5%. Predation by dragonfly larvae  caused wide variation in survival (23-88%). Fry at the  26/m2 rate grew fastest, averaging 2.3 g with 37% survival.  13.5% actual feeding rate and 2.3 feed conversion ratio.  Fry at the 104/m2 rate weighed 1.2 g with 88% survival, 6%  actual feeding rate and 0.75 feed conversion ratio. The  data indicates that the daily feeding rate should be higher  than 5% of body weight for maximum growth but should not  exceed 40 kg/ha/day in small static tanks.},
      url = {http://ageconsearch.umn.edu/record/261606},
      doi = {https://doi.org/10.22004/ag.econ.261606},
}