Level of Anion Surfactants in Aquacultural Ecosystem of Grass Shrimp Penaeus Monodon in Ilan Prefecture

本實驗之目的在探討經過擠壓機處理而熟化的糙米磨成粉後，用以取代傳統式添加麵粉所製成的草蝦飼料，其可行性之研究。糙米在擠壓機中，以120℃，0大氣壓熟化處理後再磨成粉，將熟化後的糙米與麵粉以0:4，1:3，2:2，3:1，4:0的比例混合，取此混合的碳水化合物30％，加入基本飼料中（40％蛋白質，4％脂肪），以探討其對草蝦Penaeus monodon成長的影響。本實驗在室外進行，以1500L的FRP桶為試驗池，每一個FRP桶蓄養60隻草蝦，實驗期間60天，實驗結束時，以蝦體增重量分析各試驗組之成長結果。草蝦的增重隨糙米在飼料中之增加而減少，草蝦餵以只含麵粉的飼料，較其他處理組有顯著高的飼料效率。草蝦餵以含30％的麵粉飼料和餵以含22.5％麵粉與7.5％糙米飼料，在增重上沒有顯著差異。將各組飼料浸置水中120分鐘，測其水中安定性，飼料中含30％麵粉與含22.5％麵粉及7.5％糙米的處理組最好。本實驗結果顯示，飼料中以7.5％糙米取代麵粉，對草蝦的成長影響和餵以含全麵粉的飼料相同。

關鍵字

陰離子界面活性劑；養殖環境；草蝦；直鏈式烷基苯磺酸鹽

並列摘要

To determine the feasibility of substitution of extruded rice for wheatflour which included 30% in diet,five diets containing 0,7.5,15,22.5,and 30%extruded rice were prepared to feed to grass prawn,Penaeus monodon.Thisfeeding trial was conducted outdoors within 1500 L FRP tanks.After feedingtrials of 60 days duration,the weight gain of prawn decreased with increasinglevels of extruded rice in diets.Grass prawn fed the diet containing onlywheat flour showed significantly better feed efficiency than those fed dietscontaining different levels of extruded rice.There was no significant differencein weight gain of prawn fed diets containing 30% wheat flour and 22.5% wheatflour with 7.5% extruded rice.Survival of prawn ranged from 73 to 100% forall treatments.Five diets were evaluated for water stability after 30,60,90,and 120 minutes in seawater of 32 ppt and 28℃.After 120 minutes of immersion,30% wheat flour included diet,and 7.5% extruded rice with 22.5% wheatflour included diet had water stability(dry weight of feed left intact/dryinitial weight of feed×100)above 90%.However,the diets containing 22.5%extruded rice with 7.5% wheat flour and 30% extruded rice had the lowestwater stability.The results suggest that prawn fed a diet containing 7.5%extruded rice to replace wheat flour can grow as well as prawn fed with awheat flour diet.

並列關鍵字

Anion Surfactants ； Aquacultural Environment ； Grass Shrimp ； Linear Alkylbenzene Sulfonates

國際替代計量

Level of Anion Surfactants in Aquacultural Ecosystem of Grass Shrimp Penaeus Monodon in Ilan Prefecture

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