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Exploring basic biochemical constituents in the body tissues of South African abalone Haliotis midae reared in shore-based mariculture systems

Exploring basic biochemical constituents in the body tissues of South African abalone Haliotis... The study quantifies the effects of season, age and feeding regime on glucose, glycogen, proteins and lipids in abalone Haliotis midae tissues, and to assess water loss during simulated live export. Abalone of two age classes, younger (∼30 months old) and older (∼38 months old), were subjected to four dietary regimes: two single feeds, kelp and an artificial feed, and two rotational feeding regimes utilising kelp and the artificial feed in varying ratios. Total protein, free glucose, glycogen and total lipid content were determined in the digestive gland and foot/adductor muscle. One subset of older animals, from each feeding treatment, was subjected to water content analysis by drying. Subsets of older and younger animals were subjected to a simulated live export trial to determine mass loss. Digestive gland tissue proved to be of little value for routine monitoring. Muscle glucose, muscle lipid and muscle protein concentrations were affected by month and age. Muscle glycogen concentration was affected by month, age and feeding regime. During simulated export trials, animals lost on average 15% body mass, being significantly higher (p < 0.01) in younger compared to older animals. Feeding regime did not influence susceptibility to mass loss during export. Animal age influenced the biochemical composition and export performance of abalone. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png African Journal of Marine Science Taylor & Francis

Exploring basic biochemical constituents in the body tissues of South African abalone Haliotis midae reared in shore-based mariculture systems

Laas, A; Vosloo, A
African Journal of Marine Science , Volume 32 (1): 9 – Jun 4, 2010
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Exploring basic biochemical constituents in the body tissues of South African abalone Haliotis midae reared in shore-based mariculture systems

Abstract

The study quantifies the effects of season, age and feeding regime on glucose, glycogen, proteins and lipids in abalone Haliotis midae tissues, and to assess water loss during simulated live export. Abalone of two age classes, younger (∼30 months old) and older (∼38 months old), were subjected to four dietary regimes: two single feeds, kelp and an artificial feed, and two rotational feeding regimes utilising kelp and the artificial feed in varying ratios. Total protein, free glucose,...
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Publisher
Taylor & Francis
Copyright
Copyright Taylor & Francis Group, LLC
ISSN
1814-2338
eISSN
1814-232X
DOI
10.2989/18142321003714302
Publisher site
See Article on Publisher Site

Abstract

The study quantifies the effects of season, age and feeding regime on glucose, glycogen, proteins and lipids in abalone Haliotis midae tissues, and to assess water loss during simulated live export. Abalone of two age classes, younger (∼30 months old) and older (∼38 months old), were subjected to four dietary regimes: two single feeds, kelp and an artificial feed, and two rotational feeding regimes utilising kelp and the artificial feed in varying ratios. Total protein, free glucose, glycogen and total lipid content were determined in the digestive gland and foot/adductor muscle. One subset of older animals, from each feeding treatment, was subjected to water content analysis by drying. Subsets of older and younger animals were subjected to a simulated live export trial to determine mass loss. Digestive gland tissue proved to be of little value for routine monitoring. Muscle glucose, muscle lipid and muscle protein concentrations were affected by month and age. Muscle glycogen concentration was affected by month, age and feeding regime. During simulated export trials, animals lost on average 15% body mass, being significantly higher (p < 0.01) in younger compared to older animals. Feeding regime did not influence susceptibility to mass loss during export. Animal age influenced the biochemical composition and export performance of abalone.

Journal

African Journal of Marine Science – Taylor & Francis

Published: Jun 4, 2010

Keywords: abalone; aquaculture; feeds; Haliotis midae; live export; mass loss; tissue biochemical constituents

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