碩士 / 國立臺灣海洋大學 / 水產養殖學系 / 102 / Three feeding trials were conducted to examine the growth performance and body composition of fish as the effect of fish meal protein replacement by alternative protein sources. All experimental diets were formulated to content isonitrogenous (45%) and isolipidic (12%).
The first experiment was to evaluate the effects of fish meal protein replacement by soybean meal (SBM) protein in the diets on growth performance of hybrid red snapper Lutjanus argentimaculatus #westeur024# L. sebae. Six experimental diets were formulated using soybean meal to replace fish meal at 0, 8.5, 17, 25.5, 34 and 42.5% dietary protein. 1.83 g juvenile hybrid red snapper were fed for four weeks feeding trial, and three times a day until satiation. The results showed that growth performance decreased with increasing level of soybean meal in the diets. Specific growth rate was not significantly different among fish fed control 0, 8.5, 17 and 25.5% soybean meal protein diets. The fish fed diets included 34 and 42.5% soybean meal protein showed significantly lower weight gain than those fed other treatments. Compared to control diet, fish fed soybean meal diets group had lower muscle lipid content, and higher muscle protein and moisture contents. The first experiment indicated that up to 25.5% of fish meal protein could be replaced by soybean meal protein in the diets for hybrid red snapper without adverse effects on growth performance.
The second experiment was conducted to examine the growth performance of orange-spotted grouper Epinephelus coioides as the effect of partial replacement of fish meal by poultry by-product meal (PBM) in the diets. Six experimental diets containing 0, 15, 30, 45, 60 and 75% of protein from poultry by-product meal were formulated to replace protein from fish meal. The diets were fed to 4.54 g juvenile orange-spotted grouper three times a day until satiation for five weeks feeding trial. The results showed that growth performance were affected by inclusion poultry by-product meal in the diets. Weight gain and specific growth rate (SGR) of grouper fed diets with 15, 30, 45 and 60% fish meal protein replacement by poultry by-product meal were not significantly different from those of fish fed the control diet. However, the growth performance of grouper fed diet containing 60% fish meal protein replaced by poultry by-product meal protein was significantly higher than that of grouper fed diet with 75% fish meal protein replacement by poultry by-product meal protein. Muscle proximate of grouper fed poultry by-product meal diets group had higher ash, and lower crude protein and crude lipid contents than those of grouper fed the control diet. In conclusion, poultry by-product meal could replace up to 60% of fish meal protein in the diet for orange-spotted grouper E. coioides.
The third experiment was conducted to evaluate the growth performance and body composition of orange-spotted grouper as the effect of 50% fish meal protein replaced by 10 and 20% dietary fish silage (17.5 and 35% fish silage protein) combined with poultry by-product meal (PBM) or full-fat soybean meal (SBM) protein. Triplicate groups of 14.35 g fish were fed each of five experiment diets three times a day until satiation. After six weeks feeding trial, the fish fed diets containing 10 and 20% fish silage combined with PBM or 20% fish silage combined with full-fat SBM protein shown not significantly different in growth performance from fish fed the control diet. However, the highest growth performance was observed for the fish fed diet containing 10% fish silage combined with PBM in the present study, and it indicated that fish silage combined with poultry by-product meal was better than combined with full-fat soybean meal in the diet. Compared to orange-spotted grouper fed the control diet, muscle proximate composition of fish fed diets containing fish silage had lower moisture, ash and crude lipid contents, and higher in crude protein content. In conclusion, the results suggest that inclusion 10% fish silage combined with poultry by-product meal could replace 50% fish meal protein in the diet without negative effect on growth performance of E. coioides.
| Identifer | oai:union.ndltd.org:TW/102NTOU5086095 |
| Date | January 2014 |
| Creators | Asep Ridwanudin, 呂艾司 |
| Contributors | Sheen, Shyn-Shin, 沈士新 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | en_US |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 66 |
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