Effects of dietary methionine on growth and body composition, indicators of digestion, protein metabolism and immunity, and resistance to heat stress of abalone Haliotis discus hannai

Chen, Hao; Fan, Wenhao; Zhang, Hongyang; Yue, Panpan; Wang, Rui; Zhang, Wenbing; Mai, Kangsen

doi:10.1016/j.aquaculture.2022.738978

Cited by 8 publications

(3 citation statements)

References 74 publications

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“…These authors proposed that the effect may be due to an excess of circulating amino acids at the highest casein inclusion in shrimp. Recently, trypsin activity was shown to increase quadratically to an asymptote in response to dietary methionine inclusion in H. discus hannai (Chen et al, 2023). Moreover, Knauer et al (1996) reported significantly higher protease activity in postweaned abalone (H. midae; 0.07 g) fed a formulated diet (35% CP) compared to a diatom diet (5% CP).…”

Section: Discussionmentioning

confidence: 99%

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Digestive enzymes of postweaned greenlip abalone (Haliotis laevigata) are influenced by water temperatures and dietary protein levels

Bansemer,

Salini,

Qin

et al. 2023

Aquaculture Fish & Fisheries

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Digestive enzyme activities are known to fluctuate in abalone grown under different environmental conditions however the effects of different dietary regimes are less clear. Therefore, in a 12‐week study, the effects of water temperature and dietary protein levels on digestive enzyme activity in postweaned (6‐month‐old) greenlip abalone (Haliotis laevigata) were investigated. The abalone were fed diets with crude protein levels that ranged from 27% to 36% and cultured at 14°C, 17°C and 20°C. Diets were formulated to be isoenergetic (12.5 MJ kg−1 digestible energy) and isolipidic (3.6% crude lipid). Trypsin, α‐amylase and lipase activities were measured in the gastrointestinal region. Trypsin, α‐amylase and lipase activities significantly increased as water temperatures were raised. In addition, significantly higher α‐amylase activities were observed as protein levels increased, potentially indicating a compensatory effect to increase carbohydrate utilisation for energy metabolism when in short supply. However, abalone fed high dietary protein levels may also utilise protein for energy metabolism. Further research investigating the dietary carbohydrate source for greenlip abalone is recommended. This study provides useful information on the digestive enzyme activity in postweaned greenlip abalone to improve diet strategies for sustainable production.Abbreviated abstract: Post‐weaned greenlip abalone digestive enzyme activity was examined after feeding four dietary protein levels at three different temperatures for a 12‐week period. Enzyme activities were significantly increased with increasing water temperature. Additionally, significantly higher α‐amylase activities were observed as protein levels increased.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Digestive enzymes of postweaned greenlip abalone (Haliotis laevigata) are influenced by water temperatures and dietary protein levels

Bansemer,

Salini,

Qin

et al. 2023

Aquaculture Fish & Fisheries

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show abstract

“…Several studies have shown that glucose levels can be used to assess stress responses in mollusks, including abalone (Carefoot, 1994; Haldane, 2002; Hooper et al, 2007). As elevated hemolymph glucose levels are a common stress response in marine invertebrates, metabolic markers including plasma glucose can generally be used to assess stress status in abalone (Chen et al, 2023). Cheng et al (2004) reported the accumulation of hemolymph glucose in Haliotis diversicolor supertexta under hypoxic stress.…”

Section: Discussionmentioning

confidence: 99%

Analysis of the physiological responses of Pacific abalone (Haliotis discus hannai) to various stressors to identify a suitable stress indicator

Lee

Jang

et al. 2023

J World Aquaculture Soc

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The Pacific abalone (Haliotis discus hannai) is the most economically valuable shellfish species in Northeast Asia, accounting for most of the shellfish production in South Korea. Despite the continuous improvement in the productivity of domestic abalone aquaculture, rapid seawater temperature changes caused by global warming have led to mass mortality in coastal abalone farms. Therefore, research on environmental stressors is urgently needed to prevent abalone production losses. This study analyzed the expression of heat shock protein (HSP) genes in foot muscles of H. discus hannai and metabolic parameters including glucose, lysozyme, catalase, D‐lactate, and trehalose levels in the hemolymph under acute high temperature, low temperature, low salinity, and air exposure. Quantitative reverse‐transcription polymerase chain reaction analysis showed that HSP20 expression was downregulated in all experimental groups, whereas HSP70 expression increased immediately in all experimental groups except for the low‐temperature stress group. Hemolymph analysis showed that glucose and lysozyme levels increased significantly immediately after treatment in all groups, and decreased during the recovery period. Together, the results indicate that low water temperature stress had the smallest effect on abalone among the treatments. We conclude that the other treatments acted as stressors of abalone and that HSP genes, glucose, and lysozyme can be used as stress indicators in H. discus hannai.

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Dietary choline can partially spare methionine to improve the feeds utilization and immune response in juvenile largemouth bass (Micropterus salmoides): Based on phenotypic response to gene expression

Geng

Yang

Chen

et al. 2023

Aquaculture Reports

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Effects of dietary methionine on growth and body composition, indicators of digestion, protein metabolism and immunity, and resistance to heat stress of abalone Haliotis discus hannai

Cited by 8 publications

References 74 publications

Digestive enzymes of postweaned greenlip abalone (Haliotis laevigata) are influenced by water temperatures and dietary protein levels

Digestive enzymes of postweaned greenlip abalone (Haliotis laevigata) are influenced by water temperatures and dietary protein levels

Analysis of the physiological responses of Pacific abalone (Haliotis discus hannai) to various stressors to identify a suitable stress indicator

Dietary choline can partially spare methionine to improve the feeds utilization and immune response in juvenile largemouth bass (Micropterus salmoides): Based on phenotypic response to gene expression

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