Effects of dietary mannan oligosaccharide on the survival, growth, immunity and digestive enzyme activity of freshwater crayfish, Cherax destructor Clark (1936)
Identifieur interne : 000700 ( Main/Merge ); précédent : 000699; suivant : 000701Effects of dietary mannan oligosaccharide on the survival, growth, immunity and digestive enzyme activity of freshwater crayfish, Cherax destructor Clark (1936)
Auteurs : H. M. Sang [Australie] ; R. Fotedar [Australie] ; K. Filer [Thaïlande]Source :
- Aquaculture Nutrition [ 1353-5773 ] ; 2011-04.
English descriptors
- KwdEn :
Abstract
The aim of this experiment was to determine the effects of dietary supplementation of Bio‐Mos® as a source of mannan oligosaccharide (MOS) on the growth, survival, immunity and digestive enzyme activity of freshwater crayfish, Cherax destructor (yabby). A basal diet and another diet with 0.4% of Bio‐Mos® supplemented to the basal diet were formulated. Each diet was provided to eight yabbies (35.14 ± 0.48 g, initial weight) replicated 3 times in individual 250‐L plastic cylindrical tanks for a duration of 56 days. Each tank was provided with an independent recirculating water system filtered with a biological filtration. Growth parameters such as weight, specific growth rate and average weekly gain of Bio‐Mos®‐fed yabbies were higher (P < 0.05) than yabbies fed the control diet. Total haemocyte count, granular cells and semi‐granular cells were also higher in the yabbies fed Bio‐Mos® diet. Protease activity was higher in hepatopancreas, and amylase activity was higher in the guts of yabbies fed Bio‐Mos® diet. The results implies that supplementation of MOS through Bio‐Mos® can effectively improve growth and immunological condition of yabbies.
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DOI: 10.1111/j.1365-2095.2010.00812.x
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Bio‐Mos®</term>
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<front><div type="abstract" xml:lang="en">The aim of this experiment was to determine the effects of dietary supplementation of Bio‐Mos® as a source of mannan oligosaccharide (MOS) on the growth, survival, immunity and digestive enzyme activity of freshwater crayfish, Cherax destructor (yabby). A basal diet and another diet with 0.4% of Bio‐Mos® supplemented to the basal diet were formulated. Each diet was provided to eight yabbies (35.14 ± 0.48 g, initial weight) replicated 3 times in individual 250‐L plastic cylindrical tanks for a duration of 56 days. Each tank was provided with an independent recirculating water system filtered with a biological filtration. Growth parameters such as weight, specific growth rate and average weekly gain of Bio‐Mos®‐fed yabbies were higher (P < 0.05) than yabbies fed the control diet. Total haemocyte count, granular cells and semi‐granular cells were also higher in the yabbies fed Bio‐Mos® diet. Protease activity was higher in hepatopancreas, and amylase activity was higher in the guts of yabbies fed Bio‐Mos® diet. The results implies that supplementation of MOS through Bio‐Mos® can effectively improve growth and immunological condition of yabbies.</div>
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