Ivory Coast: Should tilapia hatcheries bank on earthen ponds or hapas?

Published 2022년 8월 30일

Tridge summary

A recent study conducted by researchers from the Institut National Polytechnique Félix Houphouët-Boingy, the Université Montpellier, and the Université Nangui Abrogoua has found that earthen ponds are more productive than hapa nets in terms of tilapia larvae production. The research, published in Aquaculture Research, involved rearing Nile tilapia broodstock in both systems and found that the ponds produced a higher number of larvae and higher quality larvae compared to the hapas. The best reproductive performance was also recorded in the pond-reared broodstock, with an absolute productivity of 93.1 larvae per female and a relative productivity of 0.3 larvae per gram of female. The study recommends that tilapia farmers should consider using earthen ponds for raising broodstock due to the higher larvae yield and quality.
Disclaimer:The above summary was generated by Tridge's proprietary AI model for informational purposes.

Original content

Tilapia aquaculture is gaining ground in many tropical and subtropical countries – helping secure livelihoods and food security. But the industry faces sustainability challenges, and the strength of the farmed tilapia value chain depends on viable seed production. Tilapia larvae, or seed, are produced in two main ways: earthen ponds or hapa nets that are erected in ponds. But farmers and researchers continue to debate which system produces the greater number of larvae. Researchers from the Institut National Polytechnique Félix Houphouët-Boingy, the Université Montpellier and the Université Nangui Abrogoua compared the production of Nile tilapia (Oreochromis niloticus) larvae in two systems: earthen ponds and hapas in ponds. Over a 98-day trial period, 900 tilapia broodstock spawned in two 500 m² earthen ponds, and another 900 broodstock in 50 m² hapas, each installed in a 1,200 m² pond. The sex ratio was one male to two females at a density of 0.9 broodstock/m² for a density of ...
Source: Thefishsite

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