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Bài báo - Tạp chí
(2015) Trang: A-0-32
Tạp chí: International Fisheries Symposium
Liên kết:

This study was carried out through direct interview 65 tiger shrimp-rice (TSR) rotation farmers and 62 white leg shrimp-rice (WSR) rotation farmers in An Minh, An Bien, Vinh Thuan and U Minh Thuong, Kien Giang province from September to December 2014. The result showed that TSR farm area (1.66 ha/farm) larger than WSR farm area (1.37 ha/farm) but water level on the flat form was lower respectively 0.52 m and 0.57 m. Shrimp seed size of TSR was larger (PL16) than that in WSR (PL11.9) but stocking density and stocking time were lower (7.8 ind/m2 and 3.49 times) than that in WSR (13.4 ind/m2/cropand 3.74 times/crop). Pellet feeds were supplied for TSR (89.2% household) and WSR (95.5% household), FCRs were 0.45 and 0.67, respectively. First harvest in TSR system was longer (125 days) that in WSR (100 days), harvest sizes were 32.3 and 72.7 inds/kg respectively. Survival rate and yield of TSR (13.1% and 320 kg/ha/crop) was lower than that in WSR (33.0% and 632 kg/ha/crop). Investment cost in WSR was 51.3 VND million, higher 1.89 time compared to TSR and profit was 36.1 and 44.4 VND million/ha/crop, respectively (benefit/cost were 0.66 and 1.65 times). Economic lost household ratio in WSR (22.6%) was higher than that in TSR (7.7%). In addition, effective factors on yield and profit of the two farming systems were analysed in this study.

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