The individual and combined effects of hypoxia and high-fat diet feeding on nutrient composition and flesh quality in Nile tilapia (Oreochromis niloticus)

Lv, Hong‐Bo; Ma, Yingying; Hu, Chun-Ting; Lin, Qiuyu; Yue, Junjiayu; Chen, Liqiao; Zhang, Meiling; Du, Zhen‐Yu; Qiao, Fang

doi:10.1016/j.foodchem.2020.128479

Cited by 45 publications

(24 citation statements)

References 33 publications

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“…Six fish or 6 muscle samples were randomly selected from each group for measuring the proximate composition of whole fish and muscle tissues. The determination of proximate composition, including the contents of moisture, ash, crude lipid, and crude protein, was performed according to a previously described method ( 31 ).…”

Section: Methodsmentioning

confidence: 99%

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Enzymatic Synthesis of Diacylglycerol-Enriched Oil by Two-Step Vacuum-Mediated Conversion of Fatty Acid Ethyl Ester and Fatty Acid From Soy Sauce By-Product Oil as Lipid-Lowering Functional Oil

et al. 2022

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Soy sauce by-product oil (SSBO), a by-product of the soy sauce production process, is the lack of utilization due to an abundance of free fatty acid (FFA) and fatty acid ethyl ester (EE). The utilization of low-cost SSBO to produce value-added diacylglycerol (DAG)-enriched oil and its applications are promising for the sustainability of the oil industry. The objective of this study was to utilize SSBO containing a high content of EE and FFA as raw material to synthesize DAG-enriched oil and to evaluate its nutritional properties in fish. Based on different behaviors between the glycerolysis of EE and the esterification of FFA in one-pot enzymatic catalysis, a two-step vacuum-mediated conversion was developed for the maximum conversions of EE and FFA to DAG. After optimization, the maximum DAG yield (66.76%) and EE and FFA conversions (96 and 93%, respectively) were obtained under the following optimized conditions: lipase loading 3%, temperature 38°C, substrate molar ratio (glycerol/FFA and EE) 21:40, a vacuum combination of 566 mmHg within the initial 10 h and 47 mmHg from the 10th to 14th hour. Further nutritional study in fish suggested that the consumption of DAG-enriched oil was safe and served as a functional oil to lower lipid levels in serum and liver, decrease lipid accumulation and increase protein content in body and muscle tissues, and change fatty acid composition in muscle tissues. Overall, these findings were vital for the effective utilization of SSBO resources and the development of future applications for DAG-enriched oil as lipid-lowering functional oil in food.

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Section: Methodsmentioning

confidence: 99%

“…The muscle texture properties were assayed according to the method of Wang et al ( 32 ). The edible quality was assayed according to the method of Lv et al ( 31 ).…”

Section: Methodsmentioning

confidence: 99%

Enzymatic Synthesis of Diacylglycerol-Enriched Oil by Two-Step Vacuum-Mediated Conversion of Fatty Acid Ethyl Ester and Fatty Acid From Soy Sauce By-Product Oil as Lipid-Lowering Functional Oil

et al. 2022

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“…Dissolved oxygen (DO) is among the most significant extrinsic factors in fish farming ( 71 ). It is known to be a key restrictive factor in aquaculture with the particular reason for the circumstance being that, fish have aerophilic absorption which requires DO at efficient levels ( 72 ).…”

Section: Feed Intake and Feeding Behavior In Fishmentioning

confidence: 99%

“…Also, the severity of hypoxia reduced the intake of feed in the fish ( 76 ). In a research study on tilapia ( Oreochromis niloticus ) it was discovered that fish kept in hypoxic conditions had significantly reduced feed intake, survival rate, and weight gain ( 71 ). Additionally, a research study on rainbow trout ( Oncorhynchus mykiss ) demonstrated that hypoxia reduces feed consumption, growth rate, oxygen consumption, energy, and lipid contents ( 77 ).…”

Section: Feed Intake and Feeding Behavior In Fishmentioning

confidence: 99%

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Fish Feed Intake, Feeding Behavior, and the Physiological Response of Apelin to Fasting and Refeeding

et al. 2021

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Feed is one of the most important external signals in fish that stimulates its feeding behavior and growth. The intake of feed is the main factor determining efficiency and cost, maximizing production efficiency in a fish farming firm. The physiological mechanism regulating food intake lies between an intricate connection linking central and peripheral signals that are unified in the hypothalamus consequently responding to the release of appetite-regulating genes that eventually induce or hinder appetite, such as apelin; a recently discovered peptide produced by several tissues with diverse physiological actions mediated by its receptor, such as feed regulation. Extrinsic factors have a great influence on food intake and feeding behavior in fish. Under these factors, feeding in fish is decontrolled and the appetite indicators in the brain do not function appropriately thus, in controlling conditions which result in the fluctuations in the expression of these appetite-relating genes, which in turn decrease food consumption. Here, we examine the research advancements in fish feeding behavior regarding dietary selection and preference and identify some key external influences on feed intake and feeding behavior. Also, we present summaries of the results of research findings on apelin as an appetite-regulating hormone in fish. We also identified gaps in knowledge and directions for future research to fully ascertain the functional importance of apelin in fish.

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Effects of high α‐linolenic acid transgenic rapeseed oil diet on growth performance, fat deposition, flesh quality, antioxidant capacity, and immunity of juvenile largemouth bass (Micropterus salmoides)

Li,

Liu,

Zhang

et al. 2024

Lipids

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Omega‐3 long‐chain polyunsaturated fatty acid (n‐3 LC‐PUFA) increases in aquatic products contributes to improving meat quality, thereby positively impacting human health. Different from marine fish which primarily obtain n‐3 LC‐PUFAs directly from zooplankton and algae, freshwater fish mainly utilize dietary linolenic acid (ALA) as a substrate to synthesize n‐3 LC‐PUFAs. Our team has successfully created a transgenic rapeseed oil (TRO) with high ALA content. Therefore, we here assessed the impacts of four different diets (LR, low‐fat rapeseed oil (RO) diet; HR, high‐fat RO diet; LTR, low‐fat TRO diet; HTR, high‐fat TRO diet) on growth performance, lipid accumulation, fatty acid composition, antioxidant capacity, immunity and serum biochemical indexes of juvenile largemouth bass (Micropterus salmoides), an economically valuable freshwater fish. The results showed no significant difference in survival rate among the four dietary groups. No significant differences in body weight gain and final weight were found between the LR and LTR groups, as well as between HR and HTR groups. No matter if it was a high‐fat or low‐fat diet, compared with the RO diet, TRO diets significantly increased the content of n‐3 LC‐PUFA, improved meat quality, effectively alleviated lipid accumulation in livers and muscles of juvenile largemouth bass. In addition, using high‐fat diets, TRO diet improved the antioxidant capacity and immune ability of juvenile largemouth bass, thereby promoting the overall health of fish. This study provides novel insights for fish feed formulation optimization from the perspective of genetically modified feed ingredients, and high‐quality aquatic products for human consumption.

show abstract

The individual and combined effects of hypoxia and high-fat diet feeding on nutrient composition and flesh quality in Nile tilapia (Oreochromis niloticus)

Cited by 45 publications

References 33 publications

Enzymatic Synthesis of Diacylglycerol-Enriched Oil by Two-Step Vacuum-Mediated Conversion of Fatty Acid Ethyl Ester and Fatty Acid From Soy Sauce By-Product Oil as Lipid-Lowering Functional Oil

Enzymatic Synthesis of Diacylglycerol-Enriched Oil by Two-Step Vacuum-Mediated Conversion of Fatty Acid Ethyl Ester and Fatty Acid From Soy Sauce By-Product Oil as Lipid-Lowering Functional Oil

Fish Feed Intake, Feeding Behavior, and the Physiological Response of Apelin to Fasting and Refeeding

Effects of high α‐linolenic acid transgenic rapeseed oil diet on growth performance, fat deposition, flesh quality, antioxidant capacity, and immunity of juvenile largemouth bass (Micropterus salmoides)

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