Effects of animal-plant protein ratio in extruded and expanded diets on nitrogen and energy budgets of juvenile Chinese soft-shelled turtle (Pelodiscus sinensis Wiegmann)
文献类型：期刊论文
| 作者 | Jia, YJ; Yang, ZC; Hao, YJ; Gao, YL |
| 刊名 | AQUACULTURE RESEARCH
 |
| 出版日期 | 2005-01-31 |
| 卷号 | 36期号:1页码:61-68 |
| ISSN号 | 1355-557X |
| 关键词 | Pelodiscus sinensis animal-plant protein ratio extruded and expanded feed nitrogen budget energy budget |
| 通讯作者 | Yang, ZC, Hebei Normal Univ, Coll Life Sci, Shijiazhuang 050016, Hebei, Peoples R China |
| 中文摘要 | In this study, we investigated the effects of animal-plant protein ratio in extruded and expanded diets on nutrient digestibility, nitrogen and energy budgets of juvenile soft-shelled turtle (Pelodiscus sinensis). Four extruded and expanded feeds (diets 1-4) were formulated with different animal-plant protein ratios (diet 1, 1.50:1; diet 2, 2.95:1; diet 3, 4.92:1; diet 4, 7.29:1). The apparent digestibility coefficients (ADCs) of dry matter and crude lipid for diet 1 were significantly lower than those for diets 2-4. There was no significant difference in crude protein digestibility among diets 1-4. The ADC of carbohydrate was significantly increased with the increase in animal-plant protein. Although nitrogen intake rate, faecal nitrogen loss rate and excretory nitrogen loss rate of turtles fed diet 1 were significantly higher than those fed diets 2-4, nitrogen retention rate, net protein utilization and biological value of protein in these turtles were significantly lower than those fed diets 2-4. In addition, energy intake rate, excretory energy loss rate and heat production rate of turtles fed diet 1 were also significantly higher than those fed diets 2-4. Faecal energy loss was significantly reduced with the increase in the animal-plant protein ratio. The ADC of energy and assimilation efficiency of energy significantly increased with a higher animal-plant protein ratio. The growth efficiency of energy in the group fed diet 1 was significantly lower than those in the groups fed diets 2-4. Together, our results suggest that the optimum animal-plant protein ratio in extruded and expanded diets is around 3:1. |
| 英文摘要 | In this study, we investigated the effects of animal-plant protein ratio in extruded and expanded diets on nutrient digestibility, nitrogen and energy budgets of juvenile soft-shelled turtle (Pelodiscus sinensis). Four extruded and expanded feeds (diets 1-4) were formulated with different animal-plant protein ratios (diet 1, 1.50:1; diet 2, 2.95:1; diet 3, 4.92:1; diet 4, 7.29:1). The apparent digestibility coefficients (ADCs) of dry matter and crude lipid for diet 1 were significantly lower than those for diets 2-4. There was no significant difference in crude protein digestibility among diets 1-4. The ADC of carbohydrate was significantly increased with the increase in animal-plant protein. Although nitrogen intake rate, faecal nitrogen loss rate and excretory nitrogen loss rate of turtles fed diet 1 were significantly higher than those fed diets 2-4, nitrogen retention rate, net protein utilization and biological value of protein in these turtles were significantly lower than those fed diets 2-4. In addition, energy intake rate, excretory energy loss rate and heat production rate of turtles fed diet 1 were also significantly higher than those fed diets 2-4. Faecal energy loss was significantly reduced with the increase in the animal-plant protein ratio. The ADC of energy and assimilation efficiency of energy significantly increased with a higher animal-plant protein ratio. The growth efficiency of energy in the group fed diet 1 was significantly lower than those in the groups fed diets 2-4. Together, our results suggest that the optimum animal-plant protein ratio in extruded and expanded diets is around 3:1. |
| 学科主题 | Fisheries |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Fisheries |
| 研究领域[WOS] | Fisheries |
| 关键词[WOS] | TROUT ONCORHYNCHUS-MYKISS ; APPARENT DIGESTIBILITY COEFFICIENTS ; ATLANTIC SALMON ; EXTRUSION ; INHIBITORS ; TRYPSIN ; SALAR ; FISH |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000226334400009 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/9340]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文 |
| 作者单位 | 1.Hebei Normal Univ, Coll Life Sci, Shijiazhuang 050016, Hebei, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, Lab Evolut & Biogeog Freshwater Fishes, Wuhan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, YJ,Yang, ZC,Hao, YJ,et al. Effects of animal-plant protein ratio in extruded and expanded diets on nitrogen and energy budgets of juvenile Chinese soft-shelled turtle (Pelodiscus sinensis Wiegmann)[J]. AQUACULTURE RESEARCH,2005,36(1):61-68. |
| APA | Jia, YJ,Yang, ZC,Hao, YJ,&Gao, YL.(2005).Effects of animal-plant protein ratio in extruded and expanded diets on nitrogen and energy budgets of juvenile Chinese soft-shelled turtle (Pelodiscus sinensis Wiegmann).AQUACULTURE RESEARCH,36(1),61-68. |
| MLA | Jia, YJ,et al."Effects of animal-plant protein ratio in extruded and expanded diets on nitrogen and energy budgets of juvenile Chinese soft-shelled turtle (Pelodiscus sinensis Wiegmann)".AQUACULTURE RESEARCH 36.1(2005):61-68. |
入库方式： OAI收割
来源：水生生物研究所
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