| Summary: | 碩士 === 國立臺灣海洋大學 === 水產養殖學系 === 105 === Two experiments were conducted to evaluate the effects of partial replacement of fish meal protein by dry maggot meal (DMM) and frozen maggot (FM) on the growth performances and moulting frequency of white shrimp, Litopenaeus vannamei.
In experiment 1-1, the dietary fish meal protein was replaced by 0, 20, 40, 60 and 80% dry maggot meal. Five isonitrogenous (32%), isolipid (12%) and isocaloric (316 Kcal/100g) diets were fed 0.059±0.004g white shrimps for eight weeks. The weight gain ranged from 2829 to 3796%. The weight gain of shrimp fed with 60% fishmeal protein replaced by DMM was significantly higher than that of shrimp fed with 0 to 40% fishmeal protein replaced by DMM. The weight gain of shrimp fed with 80% fishmeal protein replaced by DMM was significantly higher than that of shrimp fed control diet. The survival of white shrimps ranged from 80 to 90%.
In experiment 1-2, the same experiment diets were used to monitor molting frequency of shrimp. Moulting frequency increased with the increasing dietary DMM. The survival of white shrimps were 100%.
In experiment 2-1, the dietary fish meal protein was replaced by 0, 15, 30, 45 and 60% frozen maggot. Five isonitrogenous (32%), isolipid (12%) and isocaloric (316 Kcal/100g) diets were fed 0.011±0.000g white shrimps for six weeks. The weight gain ranged from 5073 to 7070%. The weight gain of shrimp fed with 45% fishmeal protein replaced by FM was significantly higher than that of shrimp fed control diet. The weight gain of shrimp fed with 60% fishmeal protein replaced by FM was significantly higher than that of shrimp fed control diet. The survival of white shrimp ranged from 86 to 97%.
In experiment 2-2, the same experiment diets were used to monitor molting frequency of shrimp. Moulting frequency increased with the increasing FM. The survival of white shrimps were 100%.
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