Effects of feeding and stocking density on digestion of cultured Atlantic salmon Salmo salar L.
文献类型：CNKI期刊论文
| 作者 | Sun GX(孙国祥); Zheng JM(郑纪盟) ; Liu BL(刘宝良); Liu Y(刘鹰)
|
| 发表日期 | 2014-11-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | Atlantic salmon Salmo salar L. aquaculture feeding strategy stocking density growth digestion |
| 英文摘要 | The combined effects of feeding rate(0.8%,1.0%,and 1.2%initial body weight/day),feeding frequency(two,three,and four times/day) and stocking density(10,15,and 20 kg/m3) in recirculating aquaculture systems(RAS) on growth performance,digestion and waste generation of Atlantic salmon(Salmo salar L.) were investigated in an 8-week orthogonal experiment(L9(3)3) with a constant daily water renewal at 7.50%of total volume.No mortality occurred during the experimental period.Feed conversion ratio(FCR) varied from 0.90 to 1.13 and specific growth rate(SGR) ranged from 0.48%to 0.69%/day.SGR,thermal growth coefficient(TGC) and FCR were not significantly(P>0.05) affected by the three factors,while net protein utilization(NPU) was significantly(P<0.05) affected.Apparent digestibility coefficients(ADC) of dry matter in the present study were in the range 66.12%-73.55%.ADC in protein,lipid and energy were statistically different among all treatments and in the range of 90.07%-93.67%,81.54%-89.15%,and67.55%-71.87%,respectively.The proportion of mean total ammonia nitrogen excreted ranged from 1.37%to 1.64%of feed nitrogen at steady state,and the concentration of nitrogenous and phosphorus compounds were differently correlated to the three factors.The results will provide valuable reference data for culture management decisions in the Atlantic salmon farming industry. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the Modern Agro-Industry Technology Research System(No.CARS-48) ; the National Natural Science Foundation of China(No.31240012) ; the Special Foundation for Postdoctoral Innovative Projects of Shandong Province(No.201101009) ; the National Key Technology R&D Program of China(No.2011BAD13B04) |
| 卷 | v.32期:06页:123-131 |
| 语种 | 英文; |
| 分类号 | S965.232 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190256]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.UniversityofChineseAcademyofSciences 2.InstituteofOceanology,ChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Sun GX,Zheng JM,Liu BL,et al. Effects of feeding and stocking density on digestion of cultured Atlantic salmon Salmo salar L.. 2014. |
入库方式： OAI收割
来源：海洋研究所
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