Yếu tố ảnh hưởng đến thiệt hại do bệnh trong nuôi Tôm Sú (Penaeus monodon Fabricius, 1798) tại tỉnh Sóc Trăng

Abstract

This study aimed to determine the influencing factors on the yield loss due to diseases in black tiger shrimp (Penaeus monodon Fabricius, 1798) cultured in Soc Trang province. Data for the study were collected by interviewing 334 households farming black tiger shrimp in Soc Trangprovince in 2017. Descriptive statistical analysis was employed to evaluate the current situation of yield, disease and yield loss due to diseases in black tiger shrimp culture of households. Multiple linear regression analysis was used to determine the factors in influencing the yield loss of black tiger shrimp due to diseases. The results showed that the average black tiger shrimp yield fluctuated from 0.54 to 3.28 tons/ha/crop. The household percentage affected by black tiger shrimp diseases was from 33.3% to 90.8%. The percentage of yield loss due to diseases was between 34.6 and 74.2%. The influencing factors (variables) on the yield loss due to diseases included: being a member of black tiger shrimp culturing cooperative; application of trained techniques for shrimp culture and employment of tested post larva (negative correlation with the yield loss in all culture models: reformed extensive culture, semi-intensive culture and intensiveculture). For semi-intensive culture and intensive culture, the yield loss due to diseases way negatively correlated with farmer’s education degree, employment of accumulation pond and the total pond area for shrimp culture of household whereas farmer’s age positively correlated with farmer’s age.