| Summary: | 碩士 === 國立臺灣海洋大學 === 水產養殖學系 === 94 === The purpose of this study was to investigate five protein sources on the digestibility of white shrimp Litopenaeus vannamei. Each experimental diet contained 70％ of white fish meal as reference diet mixed with 30％ of one of the following ingredients：roasted soybean meal, Chlorella meal, meat and bone meal, rapeseed meal and squid bowels meal. The ration was 4％body weight and the duration of the experiment was eight weeks. The water temperature of the circulation system was controled at 28±1℃, salinity 32ppt. There were no significant differences among the five test diets in survival rate . There were no significant differences in apparent dry matter digestibility (ADMD) ranging from 61.8 to 67.3％ among the diets. Apparent protein digestibility(APD) was significantly higher in shrimp fed roasted soybean meal（89.5％）, while Chlorella meal was the lowest（72.2％）. The apparent lipid digestibility(ALD) was significantly higher in shrimp fed Chlorella meal（85.1％）and rapeseed meal(81.6%) followed by those fed roasted soybean meal（35.8％）, squid bowels meal（38.7％）, meat and bone meal（6.7％）was the lowest. The apparent nitrogen-free extract digestibility (ANFED) was significantly higher in shrimp fed meat and bone meal（99.9％）、roasted soybean meal（91.9％）and squid bowels meal（94.2％）, rapeseed meal（65.3％）being the lowest. Apparent amino acid digestibility (AAAD) was significantly higher in shrimp fed roasted soybean meal（89％）, while Chlorella meal（77.3％）was the lowest. It was concluded that roasted soybean meal, squid bowels meal, rapeseed meal, meat and bone meal, Chlorella meal were better protein sources than the latter three sources.
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