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Effect of selected feed meals and starches on diet digestibility in the mud crab, Scylla serrata

By Phuong Truong, Alexander Anderson, Peter Mather, Brian Paterson and Neil A. Richardson


The present study examined the capacity of the mud crab, Scylla serrata to digest experimental diets that contained different animal and plant-based feed meals or different levels or types of starch. The apparent dry matter digestibility (ADMD) coefficients for all feed meals tested in the first part of this study, except meat meal, were similar (78–88%). Crude protein digestibility (ACPD) coefficients for all feed meals were relatively high, with values ranging from 86% to 96%. Cotton seed meal, poultry meal, canola meal, fishmeal, soybean meal and lupin meal had similar gross energy digestibility (AGED) values (P>0.05) ranging from 84% to 89%. In the second part of this study, the impact of selected starches on the digestibility of fishmeal-based formulated diets was assessed. The apparent starch digestibility (ASD) of wheat starch decreased significantly as the inclusion level was increased from 15% to 60%, however, there was no significant effect on ACPD values. At a 30% inclusion level, the ASD of diets containing different starches decreased in the order corn>wheat>potato=rice. Moreover, ACPD values were significantly higher (P<0.05) in the diets containing corn or rice starch than in those containing wheat or potato starches.\ud \u

Topics: 060603 Animal Physiology - Systems, mud crab, Scylla serrata, digestibility, starch
Publisher: Wiley-Blackwell Publishing Ltd
Year: 2008
DOI identifier: 10.1111/j.1365-2109.2008.02056.x
OAI identifier:

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