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.
Tạp chí khoa học Trường Đại học Cần Thơ
Lầu 4, Nhà Điều Hành, Khu II, đường 3/2, P. Xuân Khánh, Q. Ninh Kiều, TP. Cần Thơ
Điện thoại: (0292) 3 872 157; Email: tapchidhct@ctu.edu.vn
Chương trình chạy tốt nhất trên trình duyệt IE 9+ & FF 16+, độ phân giải màn hình 1024x768 trở lên