The individual and combined effects of hypoxia and high-fat diet feeding on nutrient composition and flesh quality in Nile tilapia (Oreochromis niloticus)
| Autor: | Mei-Ling Zhang, Jun-jia-yu Yue, Ying-ying Ma, Chun-Ting Hu, Fang Qiao, Hong-Bo Lv, Qiu-Yu Lin, Liqiao Chen, Zhen-Yu Du |
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| Rok vydání: | 2020 |
| Předmět: |
Aquaculture
Diet High-Fat 01 natural sciences Analytical Chemistry chemistry.chemical_compound Nile tilapia 0404 agricultural biotechnology Nutrient Food Quality Animals Food science Hypoxia chemistry.chemical_classification Glycogen biology business.industry Flesh 010401 analytical chemistry food and beverages Hypoxia (environmental) 04 agricultural and veterinary sciences General Medicine Cichlids Nutrients biology.organism_classification 040401 food science Animal Feed 0104 chemical sciences Oreochromis chemistry business Food Science Polyunsaturated fatty acid |
| Zdroj: | Food chemistry. 343 |
| ISSN: | 1873-7072 |
| Popis: | Hypoxia and high-fat diet (HFD) feeding are two factors commonly existing in aquaculture. However, their individual and combined effects on nutrient composition and flesh quality in fish have not been investigated. The present study evaluated the alterations of growth, nutrient composition and flesh quality in Nile tilapia (initially 7.0 ± 0.1 g and 5.6 ± 0.2 cm) fed with normal fat diet (5.95% fat) or HFD (11.8% fat) at two dissolved oxygen levels (1.1 ± 0.1 and 7.2 ± 0.1 mg/L) for 8 weeks. The results showed that hypoxia and HFD had similar effects in inducing lipid deposition, reducing flesh protein and amino acids content, pH values and water holding ability. Hypoxia had additional adverse effects in decreasing meat yield, flesh contents of n-3 PUFA and glycogen, increasing flesh fragmentation and causing liver damages. The combination of hypoxia and HFD significantly decreased feed intake, survival rate and muscle protein content, but didn’t affect flesh quality-related parameters. |
| Databáze: | OpenAIRE |
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