Đặc điểm kỹ thuật và hiệu quả của nghề nuôi hàu (<i>Crassostrea belcheri</i>) tại các tỉnh Bến Tre, Bạc Liêu và Cà Mau

Abstract

The results of the survey were conducted among oyster farmers in Bac Lieu, Ca Mau and Ben Tre provinces to collect information on farming techniques and economic efficiency of the oyster farming model. Oyster farmers in Ben Tre use cement roofing sheets to collect seeds and raise them on the fixed frame until harvest, while farmers in Bac Lieu-Ca Mau bought wild seeds originally collected from the mangrove forest and raise them on the floating rafts. Oyster culture period in Bac Lieu, Ca Mau and Ben Tre areas was 12.10 ± 0.45 and 17.04 ± 1.26 months, respectively. The survival rate was 83.25 ± 10.55% and 69.6 ± 14.6%, the average yield of one crop was 498.13 ± 74.92 kg/10 m² of floating raft and 358.72 ± 135.98 kg/10 m² of fixed frame. The profit after one crop in Bac Lieu and Ca Mau area was 3.047 ± 1.426 million VND/10 m² and in Ben Tre was 4.274 ± 2.244 million VND/10 m², the corresponding profit ratio was 52.8 ± 27.0% and 138.2 ± 61.0%. Factors such as culture period, survival rate, productivity, total cost, profit and profit margin between models showed significant differences (P < 0.05). The survey results also showed major difficulties arising from farming practices such as lack of investment and technical knowledge… and recommendations to develop oyster farming in the Mekong Delta provinces in a sustainable direction.

Keywords: farming techniques, financial efficiency, Mekong Delta, oysters,