農業部-水產試驗所全球資訊網農業部-水產試驗所全球資訊網

本試驗主要目的在探討商用文蛤輔助飼料對文蛤養成前期成長之影響，商用輔助飼料分3種廠牌，自配製輔助飼料為育肥用飼料，共4種，1組用活體餌（以微細藻為主）及不投餵之對照組共6組2重複，投餵1％文蛤總重之乾重飼料量。試驗用水泥池底面積4.55 m2，6月8日放苗平均體重1.509±0.340g，平均殼長17.71±1.39mm，10月12日試驗結束。試驗結果經Duncan 檢定平均濕重與殼長以商用飼料A最差，其次為商用飼料C，平均濕重最重的為自配製之液料，次重為商用飼料B，但均與不投餵之對照組同一組群，即該3組差異不顯著；而餌藻組與不投餵之對照組及商用飼料B為另一差異不顯著之組群。平均殼長以商用飼料B最長，自配製之液料次長，再依次為不投餵之對照組、餌藻組，該4組差異不顯著。日成長率最大在8月11之第3次測定，其中又以商用飼料A之一池的平均濕重與殼長日成長率均最高。活存率以不投餵之對照組97.23％最高，餌藻組82.77％最低，次低為商用飼料C組85.96％，自配製之液料與AB2商用飼料同為91％。肥滿度有較大差異，可分5個差異不顯著組群，自配製之液料最高，商用飼料B次高，商用飼料A最差。商用飼料C與不投餵之對照組差異不顯著。

The objective of rearing experiment was to investigate the effects of the 3 commercial diets on the growth of hard clam in grow-up culture. The experiment divided into six groups that were 3 commercial diets and one developing test diets as treatment groups. The control group divided without diets and microalgae groups. After 127 days of rearing results, in wet weight growth, developing test diets was the best (p <0.05), followed by commercial diets B and without diets, this three groups were no significant difference. The other no significant difference groups were commercial diets B, without diets and microalgae groups. The lowest growth rate was commercial diets A and followed by commercial diets C. But commercial diets B got the best shell length growth and followed by developing test diets, without diets and microalgae groups there were no significant difference among this 4 groups. The commercial diets A got the slowest shell length growth and followed by commercial diets C also. The survival rates of microalgae groups was the lowest as 83％, the highest survival rate was without diets groups as 97％. The developing test diets groups had he highest condition index and commercial diets A groups got the lowest condition index that CI value was half of he highest.