Effects of soluble dietary cellulose on specific growth rate, survival and digestive enzyme activities in three freshwater crayfish (Cherax) species
Dammannagoda, Lalith, Pavasovic, Ana, Hurwood, David, & Mather, Peter (2015) Effects of soluble dietary cellulose on specific growth rate, survival and digestive enzyme activities in three freshwater crayfish (Cherax) species. Aquaculture Research, 46(3), pp. 626-636.
The current study evaluated the effect of soluble dietary cellulose on growth, survival and digestive enzyme activity in three endemic, Australian freshwater crayfish species (redclaw: Cherax quadricarinatus, marron: C. tenuimanus, yabby: C. destructor). Separate individual feeding trials were conducted for late-stage juveniles from each species in an automated recirculating freshwater, culture system. Animals were fed either a test diet (TD) that contained 20% soluble cellulose or a reference diet (RD) substituted with the same amount of corn starch, over a 12 week period. Redclaw fed with RD showed significantly higher (p<0.05) specific growth rates (SGR) compared with animals fed the TD, while SGR of marron and yabby fed the two diets were not significantly different. Expressed cellulase activity levels in redclaw were not significantly different between diets. Marron and yabby showed significantly higher cellulase activity when fed the RD (p<0.05). Amylase and protease activity in all three species were significantly higher in the animals fed with RD (p<0.05). These results indicate that test animals of all three species appear to utilize starch more efficiently than soluble dietary cellulose in their diet. The inclusion of 20% soluble cellulose in diets did not appear, however, to have a significant negative effect on growth rates.
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|Item Type:||Journal Article|
|Additional Information:||Paper presented in "Aquaculture 2013, Nashville, Tennessee"|
|Keywords:||Crustacean, Cherax, Redclaw, Yabby, Marron, Soluble cellulose, Endogenous cellulase, Carbohydrates, Hepatopancreas, Midgut gland, Digestibility, Digestive enzymes, Ezyme expression, endo beta glucanase, amylase, protease, Carboxy methyl cellulase|
|Subjects:||Australian and New Zealand Standard Research Classification > BIOLOGICAL SCIENCES (060000) > GENETICS (060400) > Genetics not elsewhere classified (060499)
Australian and New Zealand Standard Research Classification > BIOLOGICAL SCIENCES (060000) > PHYSIOLOGY (060600) > Animal Physiology - Systems (060603)
Australian and New Zealand Standard Research Classification > AGRICULTURAL AND VETERINARY SCIENCES (070000) > FISHERIES SCIENCES (070400) > Aquaculture (070401)
|Divisions:||Current > Schools > School of Biomedical Sciences
Current > Schools > School of Earth, Environmental & Biological Sciences
Current > QUT Faculties and Divisions > Faculty of Health
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Copyright Owner:||Copyright 2013 Wiley-Blackwell Publishing Ltd.|
|Copyright Statement:||The definitive version is available at www3.interscience.wiley.com|
|Deposited On:||15 Jul 2013 00:40|
|Last Modified:||04 Apr 2016 02:47|
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