Bioavailability and tissue distribution of amino acid-chelated trace elements in rainbow trout Oncorhynchus mykiss / Shuichi Satoh and four others.

By:

Satoh, Shuichi

Contributor(s):

Material type: Article

ArticlePublisher: Tokyo, Japan : Blackwell Publishing, 2003Content type:

text

Media type:

unmediated

Carrier type:

volume

ISSN:

0919-9268

Subject(s):

Online resources:

Online Access

In: Japan Fisheries Science Volume 69, Issue no. 4 (August 2003), page 722 - 730Abstract: Feeding trials were conducted to determine the availability of amino acid-chelated trace elements to rainbow trout. Three practical diets were supplemented with trace element mix either all from sulfates (Tr-Sf), Zn and Mn from sulfates added with Cu from amino acid chelates (Cu-Am) or a mixture of trace elements from amino acid chelates (Tr-Am). Rainbow trout weighing 1.11 g were fed the experimental diets for 15 weeks. Growth, feed gain ratio (FGR), tissue distribution, retention of the elements and plasma alkaline phosphatase (ALP) activity were compared between the treatments. Absorption of the elements was determined using larger fish of approximately 95 g fed the same experimental diets. Growth and FGR were not significantly influenced by the chemical form of the elements. The highest concentration of Cu was measured in the liver, whereas highest concentrations of Zn and Mn were in bone. Plasma ALP activity was significantly higher in the Tr-Am group. The absorption of elements from the Tr-Am diet was higher but not significantly different from the other two diets. These results suggest that trace elements from Tr-Am seem to be more available than from inorganic sources tested.

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Holdings
Item type	Current library	Collection	Call number	Vol info	Status	Date due	Barcode
Journal Article	NFRDI Central Office NFRDI KMRC Indexed Materials Collection	Print		Volume 69, Issue no. 4 (August 2003), page 722-730	Available		IMC001039
Journal	NFRDI Central Office NFRDI KMRC Serial Collection	Print	SH 301 .J359 2003 vol. 69 no. 4 (Browse shelf(Opens below))	Volume 69, No. 4 (August 2003)	Available		SC00006

Includes bibliographical references

Feeding trials were conducted to determine the availability of amino acid-chelated trace elements to rainbow trout. Three practical diets were supplemented with trace element mix either all from sulfates (Tr-Sf), Zn and Mn from sulfates added with Cu from amino acid chelates (Cu-Am) or a mixture of trace elements from amino acid chelates (Tr-Am). Rainbow trout weighing 1.11 g were fed the experimental diets for 15 weeks. Growth, feed gain ratio (FGR), tissue distribution, retention of the elements and plasma alkaline phosphatase (ALP) activity were compared between the treatments. Absorption of the elements was determined using larger fish of approximately 95 g fed the same experimental diets. Growth and FGR were not significantly influenced by the chemical form of the elements. The highest concentration of Cu was measured in the liver, whereas highest concentrations of Zn and Mn were in bone. Plasma ALP activity was significantly higher in the Tr-Am group. The absorption of elements from the Tr-Am diet was higher but not significantly different from the other two diets. These results suggest that trace elements from Tr-Am seem to be more available than from inorganic sources tested.

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