Effect of dietary cornstarch levels on growth performance, enzyme activity and hepatopancreas histology of juvenile red swamp crayfish, Procambarus clarkii (Girard)

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	Effect of dietary cornstarch levels on growth performance, enzyme activity and hepatopancreas histology of juvenile red swamp crayfish, Procambarus clarkii (Girard)
	Xiao, Xucheng 1,2; Han, Dong 1,3; Zhu, Xiaoming 1; Yang, Yunxia 1; Xie, Shouqi 1; Huang, Ying 4
刊名	AQUACULTURE
	2014-04-20
卷号	426 页码:112-119
关键词	Cornstarch Growth alpha-Amylase Hepatopancreas histology Procambarus clarkii
ISSN号	0044-8486
通讯作者	Zhu, XM (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China.
中文摘要	An 8-week experiment was conducted to determine the ability of juvenile red swamp crayfish Procambarus clarkii (Girard) to utilize different levels of cornstarch. Seven isonitrogenous practical diets were formulated with different cornstarch levels (50, 100, 150, 200, 250, 300 and 350 g kg(-1)). The growth indices, body composition, a-amylase activity and hepatopancreas histology were examined. Results showed that the survival ranged from 71.1% to 82.2%, and was not significantly affected by dietary cornstarch levels (P > 0.05). Feeding rate (FR) increased with the level of cornstarch (P < 0.05), with no significant differences among the groups fed with cornstarch over 250 g kg(-1) (P > 0.05). Weight gain (WG) and feed conversion ratio (FCR) were significantly affected by dietary cornstarch levels (P < 0.05), and the highest WG and lowest FCR were observed in the crayfish fed with the 200 g kg(-1) cornstarch diet. Crude lipid and hepatopancreas lipid content increased with increasing dietary cornstarch. A saturation curve was observed in the specific activity of the alpha-amylase, hemolymph glucose and hepatopancreas glycogen concentration in relation to dietary cornstarch levels, with the maximum activity in crayfish fed diets containing from 200 to 350 g kg(-1) cornstarch (P > 0.05). In addition, crayfish exhibited notable histological differences among the groups. The morphology of the hepatopancreas in crayfish fed with 150 g kg(-1) and 200 g kg(-1) was normal, with tubules tightly arranged. Different cell types in these two groups were well recognized and reasonably uniform in shape and size. It could be concluded that the optimum cornstarch level for this crayfish could be 203 g kg(-1) when the diets contain 350 g kg(-1) protein. (C) 2014 Elsevier B.V. All rights reserved.
英文摘要	An 8-week experiment was conducted to determine the ability of juvenile red swamp crayfish Procambarus clarkii (Girard) to utilize different levels of cornstarch. Seven isonitrogenous practical diets were formulated with different cornstarch levels (50, 100, 150, 200, 250, 300 and 350 g kg(-1)). The growth indices, body composition, a-amylase activity and hepatopancreas histology were examined. Results showed that the survival ranged from 71.1% to 82.2%, and was not significantly affected by dietary cornstarch levels (P > 0.05). Feeding rate (FR) increased with the level of cornstarch (P < 0.05), with no significant differences among the groups fed with cornstarch over 250 g kg(-1) (P > 0.05). Weight gain (WG) and feed conversion ratio (FCR) were significantly affected by dietary cornstarch levels (P < 0.05), and the highest WG and lowest FCR were observed in the crayfish fed with the 200 g kg(-1) cornstarch diet. Crude lipid and hepatopancreas lipid content increased with increasing dietary cornstarch. A saturation curve was observed in the specific activity of the alpha-amylase, hemolymph glucose and hepatopancreas glycogen concentration in relation to dietary cornstarch levels, with the maximum activity in crayfish fed diets containing from 200 to 350 g kg(-1) cornstarch (P > 0.05). In addition, crayfish exhibited notable histological differences among the groups. The morphology of the hepatopancreas in crayfish fed with 150 g kg(-1) and 200 g kg(-1) was normal, with tubules tightly arranged. Different cell types in these two groups were well recognized and reasonably uniform in shape and size. It could be concluded that the optimum cornstarch level for this crayfish could be 203 g kg(-1) when the diets contain 350 g kg(-1) protein. (C) 2014 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Fisheries ; Marine & Freshwater Biology
研究领域[WOS]	Fisheries ; Marine & Freshwater Biology
关键词[WOS]	PENAEUS-SEMISULCATUS CRUSTACEA ; MONODON FABRICIUS JUVENILES ; LITOPENAEUS-VANNAMEI ; DIGESTIVE GLAND ; JASUS-EDWARDSII ; SPINY LOBSTER ; WHITE SHRIMP ; CARBOHYDRATE ; PROTEIN ; DECAPODA
收录类别	SCI
资助信息	Natural Science Foundation of China [31123001]; National Water Pollution Control and Management Technology Major Projects [2012ZX07103003-02-03]
语种	英语
WOS记录号	WOS:000334284000016
公开日期	2014-08-07
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/20014]
专题	水生生物研究所_淡水生态学研究中心_期刊论文
作者单位	1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Freshwater Aquaculture Collaborat Innovat Ctr Hub, Wuhan 430070, Peoples R China 4.Fujian Agr & Forestry Univ, Fuzhou 350002, Fujian, Peoples R China
推荐引用方式 GB/T 7714	Xiao, Xucheng,Han, Dong,Zhu, Xiaoming,et al. Effect of dietary cornstarch levels on growth performance, enzyme activity and hepatopancreas histology of juvenile red swamp crayfish, Procambarus clarkii (Girard)[J]. AQUACULTURE,2014,426:112-119.
APA	Xiao, Xucheng,Han, Dong,Zhu, Xiaoming,Yang, Yunxia,Xie, Shouqi,&Huang, Ying.(2014).Effect of dietary cornstarch levels on growth performance, enzyme activity and hepatopancreas histology of juvenile red swamp crayfish, Procambarus clarkii (Girard).AQUACULTURE,426,112-119.
MLA	Xiao, Xucheng,et al."Effect of dietary cornstarch levels on growth performance, enzyme activity and hepatopancreas histology of juvenile red swamp crayfish, Procambarus clarkii (Girard)".AQUACULTURE 426(2014):112-119.