文献类型： 外文期刊

作者： Hua, X. M. ¹ ; Shui, C. ¹ ; He, Y. D. ¹ ; Xing, S. H. ¹ ; Yu, N. ¹ ; Zhu, Z. Y. ¹ ; Zhao, C. Y.;

作者机构： 1.Shanghai Ocean Univ, Key Lab Freshwater Fishery Germplasm Resources, Minist Agr, Shanghai 201306, Peoples R China

2.Shanghai Engn Res Ctr Aquaculture, Shanghai, Peoples R China

3.Shanghai Engn Res Ctr Aq

关键词： alternative protein;biofeed;feed stimulants;fish meal;freshwater crayfish (Procambarus calrkii);preference

期刊名称：AQUACULTURE NUTRITION （ 影响因子：3.497； 五年影响因子：3.78 ）

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收录情况： SCI

摘要： The feeding trials were carried out with freshwater crayfish (Procambarus clarkii) to evaluate the three feed stimulants betaine (Bet), squid extract (SE) and squid meal (SM) upon fish meal (FM) diets or biofeed (BF) diets in which FM were partially replaced by BF. Results showed the three feed stimulants had no significant effect on growth. By the relative concentration of markers in the faeces and diets, the preference for each diet was estimated, and the best stimulant was the mixture of Bet, SE and SM. As FM replaced by BF increased, added with the mixture, the relative weight gain showed an increasing trend, but decreased significantly by 30% replacement. With the substitution increasing, trypsin activities increased, whereas decreased too upon 30% substitution. Less than 30% replacement, there was no significant effect on muscle proximate composition, intestine amylase activities and serum haemocyanin contents, except the drop of lipid. The results indicated that the mixture of Bet, SE and SM could perform well as a feed stimulant. And with the addition of the mixture, FM in the diet could make about no more than 20% saving without any adverse effects.