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The individual and combined effects of hypoxia and high-fat diet feeding on nutrient composition and flesh quality in Nile tilapia (Oreochromis niloticus)
- Source :
- Food chemistry. 343
- Publication Year :
- 2020
-
Abstract
- 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.
- Subjects :
- 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
Subjects
Details
- ISSN :
- 18737072
- Volume :
- 343
- Database :
- OpenAIRE
- Journal :
- Food chemistry
- Accession number :
- edsair.doi.dedup.....e3dc44c62973a11ff15b91b74c3df9c6