The effects of various binders and moisture content on pellet stability of research diets for freshwater crayfish

Ruscoe, Ian, Jones, Clive, Jones, Paul and Caley, P. 2005, The effects of various binders and moisture content on pellet stability of research diets for freshwater crayfish, Aquaculture nutrition, vol. 11, no. 2, pp. 87-93.

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Title The effects of various binders and moisture content on pellet stability of research diets for freshwater crayfish
Author(s) Ruscoe, Ian
Jones, Clive
Jones, Paul
Caley, P.
Journal name Aquaculture nutrition
Volume number 11
Issue number 2
Start page 87
End page 93
Publisher Blackwell Science
Place of publication Oxford, England
Publication date 2005-04
ISSN 1353-5773
1365-2095
Keyword(s) Binders
Freshwater crayfish
Pellet moisture
Pellet stability
Research diets
Summary Two experiments were conducted to assess the water stability of a practical research diet manufactured with various binders and differing levels of moisture. In the first experiment the binders – agar, gelatine, carrageenan, and carboxymethylcellulose (CMC) were included at both 3 and 5% of total ingredient weight. All binders were tested with equal ingredient weight to water volume, and additionally carrageenan was tested in a diet with double the water volume. The dry matter remaining following immersion for up to 180 min was calculated and the rate of pellet decay was modelled using the Weibull distribution. The analysis revealed that the rate of dry matter loss decreased with time, and that carrageenan and CMC binders were significantly better (P < 0.001) binders than the agar and gelatine. The 5% binder concentration slowed the decay rate by as much as 62% as compared with the 3% binder concentration. The second experiment compared the binding performance of carrageenan and sodium alginate in both 50% moisture and 10% moisture pellets. The same analysis revealed that 10% moisture alginate-bound pellets were more water stable than the others. A discussion of the use of moist diets for crayfish research is included.
Language eng
Field of Research 070204 Animal Nutrition
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2005, Blackwell Publishing Ltd
Persistent URL http://hdl.handle.net/10536/DRO/DU:30003125

Document type: Journal Article
Collection: School of Ecology and Environment
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