Influence of dietary protein levels on growth, digestibility, digestive enzyme activity and stress tolerance in white-leg shrimp, Litopenaeus vannamei (Boone, 1931), reared in high-density tank trials

	Influence of dietary protein levels on growth, digestibility, digestive enzyme activity and stress tolerance in white-leg shrimp, Litopenaeus vannamei (Boone, 1931), reared in high-density tank trials
	Xia, Sudong 2; Li, Yong 1,2; Wang, Wenqi 3; Rajkumar, Mayalagu 4; Vasagam, Kumaravel Paramasivam Kumaraguru 5; Wang, Hua 2
刊名	AQUACULTURE RESEARCH
	2010-11-01
卷号	41 期号:12 页码:1845-1854
关键词	Litopenaeus vannamei dietary protein growth digestive enzymes digestibility
英文摘要	The effects of dietary protein (DP) levels on the growth, digestibility, digestive enzyme activity and stress tolerance of Litopenaeus vannamei (Boone, 1931) were investigated in high-density (375 m(-3)) tank trials. Shrimps (6.2 +/- 0.2 g) were fed diets with five different protein levels (31%, 35%, 39%, 43% and 47%) for 60 days. The results showed that variations in DP significantly (P<0.05) influenced the growth performance, digestibility, enzyme activity and their ability to tolerate stress. Weight gain showed a linear increase in relation to crude protein (CP) up to 43% and showed a slight decrease with a further increase to 47%. Feed conversion ratio was observed to be the lowest in CP 43%: 2.53. A higher protein efficiency ratio was observed with the low-protein diet CP31 (1.07); however, it was not significantly different from the rest of the dietary treatments. Protein digestibility was the highest (75.71%) in CP47 and the lowest (71.94%) in CP31. Protease activity ranged between 63.7 and 70.2 (U Protein(-1)), and showed a positive correlation with the DP levels. Shrimp fed CP43 well tolerated a sudden decline in salinity and survived for 548.3 min in fresh water. Observations from this study indicate that a DP level around 43% could be optimum for L. vannamei in high-density culture systems in the absence of natural productivity.
收录类别	SCI
语种	英语
WOS记录号	WOS:000283946200013
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/32799]
专题	海洋研究所_海洋生物技术研发中心
作者单位	1.Chinese Acad Sci, Inst Oceanol, Res & Dev Ctr Marine Biotechnol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing, Peoples R China 3.Qingdao Agr Univ, Dept Anim Sci, Qingdao, Peoples R China 4.Annamalai Univ, Ctr Adv Study Marine Biol, Parangipettai, Tamil Nadu, India 5.VO Chidambaram Coll, Dept Zool Res, Tuticorin, Tamil Nadu, India
推荐引用方式 GB/T 7714	Xia, Sudong,Li, Yong,Wang, Wenqi,et al. Influence of dietary protein levels on growth, digestibility, digestive enzyme activity and stress tolerance in white-leg shrimp, Litopenaeus vannamei (Boone, 1931), reared in high-density tank trials[J]. AQUACULTURE RESEARCH,2010,41(12):1845-1854.
APA	Xia, Sudong,Li, Yong,Wang, Wenqi,Rajkumar, Mayalagu,Vasagam, Kumaravel Paramasivam Kumaraguru,&Wang, Hua.(2010).Influence of dietary protein levels on growth, digestibility, digestive enzyme activity and stress tolerance in white-leg shrimp, Litopenaeus vannamei (Boone, 1931), reared in high-density tank trials.AQUACULTURE RESEARCH,41(12),1845-1854.
MLA	Xia, Sudong,et al."Influence of dietary protein levels on growth, digestibility, digestive enzyme activity and stress tolerance in white-leg shrimp, Litopenaeus vannamei (Boone, 1931), reared in high-density tank trials".AQUACULTURE RESEARCH 41.12(2010):1845-1854.