https://scholars.lib.ntu.edu.tw/handle/123456789/138146
標題: | Study of growth and body composition of red snapper Lutjanus erythropterus fed diets containing Escherichia coli expressing recombinant tilapia insulin-like growth factor-I | 作者: | LIAO, Wen-Liang LU, Hsin-Hui HUANG, Shun-Kuo WU, Jen-Leh HUANG, Jan-Hsiung LIN, En-Chung |
關鍵字: | Growth; Insulin-like growth factor-I; Lutjanus erythropterus; Red snapper | 公開日期: | 2008 | 起(迄)頁: | 354-361 | 來源出版物: | Fisheries Science | 摘要: | To examine the effects of insulin-like growth factor (IGF)-I on the growth performance of fish, juvenile red snapper Lutjanus erythropterus with an initial body weight of approximately 12 g were fed diets containing different amounts of IGF-I containing Escherichia coli BL21 powder (BL21-tIGF-I). The growth of fish was enhanced by lower doses (0.25, 0.5 and 1%), but deteriorated at higher amounts (2.5 and 5%). The best results were obtained with 0.5% BL21-tIGF-I supplementation, which resulted in 154 and 85% weight gain and feed efficiency, respectively. In addition, muscle proteins appeared to be elevated, but muscle lipids were reduced except for in the 1% BL21-tIGF-I group. In contrast, liver lipids were reduced at 0.25, 0.5 and 1%, but increased at 2.5 and 5% BL21-tIGF-I. Furthermore, to examine the effects of BL21-tIGF-I on later-stage red snapper, we selected fish of approximately 23-24 g weight and fed them a diet either with or without 0.5% BL21-tIGF-I for 12 weeks. Results showed that the growth performance of later-stage fish was better with BL21-tIGF-I than those without supplementation after 6 weeks of feeding. The average body weight of fish that did not receive BL21-tIGF-I during the first 6 weeks, but were fed BL21-tIGF-I in weeks 7-12, was significantly higher than those fed without BL21-tIGF-I for the entire experiment. These results suggest that a continuous supply of BL21-tIGF-I may be beneficial for the growth performance of red snapper. ? 2008 Japanese Society of Fisheries Science. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/162453 https://www.scopus.com/inward/record.uri?eid=2-s2.0-41549168786&doi=10.1111%2fj.1444-2906.2008.01533.x&partnerID=40&md5=ebf7149570bf0433d105fb8de9b74665 |
DOI: | 10.1111/j.1444-2906.2008.01533.x | SDG/關鍵字: | Escherichia coli; Lutjanus erythropterus; Tilapia |
顯示於: | 生化科技學系 |
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