FISHERIES RESEARCH INSTITUTE,MOA,TAIWAN

The survey data categorized, based on the feeding of hard clam, Meretrix lusoria, into (1) fishmeal, (2) organic fermentive water and (3) algae water. The averaged grow out period was approximant 12.8 months. Analysis of the survey data showed that a fed algae water diet group had the highest total costs, whereas the fed fishmeal diet group had the highest returns per hectare among three groups. As a result, hard clam culture still had some profits. In regard to the production efficiency, the study found that fed fishmeal diet group had the highest investment efficiency.
Key words: Hard clam, Culture model, Production efficiency, Break-even point analysis, Financial analysis.