Xác định các yếu tố tác động đến năng suất nuôi cá tra thâm canh tỉnh Đồng Tháp

Abstract

Striped catfish is one of leading aquatic products of Vietnam with its production clusters locate in Mekong Delta. With primary data collected via direct interviews and observation at 60 catfish farms in 2012, this study briefs current status before analyzing economic effectiveness of striped catfish commercial farming in Dong Thap province, one of largest catfish production clusters in the delta.Linear regression method is also used to construct production function and then, identify major productivity determinants of this industry in Dong Thap province. Those are fingerling stocking density, disease prevention cost and feed cost. This study also calculates optimum levels of the above determinants to get maximum productivity (estimated at 436 metric ton/ha). The farmers should stock fish at optimum density of 61 individual/m2, spend optimum disease prevention cost at 140 million VND/ha and optimum feed cost at 10.68 billion VND/ha.