مورد إلكتروني
Rapid effects of essential fatty acid deficiency on growth and development parameters and transcription of key fatty acid metabolism genes in juvenile barramundi (Lates calcarifer)
| العنوان: | Rapid effects of essential fatty acid deficiency on growth and development parameters and transcription of key fatty acid metabolism genes in juvenile barramundi (Lates calcarifer) |
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| بيانات النشر: | Cambridge University Press (CUP) 2015-09-01 |
| تفاصيل مُضافة: | Salini, Michael J. Turchini, Giovanni M. Wade, Nicholas M. Glencross, Brett D. |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | Barramundi (Lates calcarifer), a catadromous teleost of significant and growing commercial importance, are reported to have limited fatty acid bioconversion capability and therefore require preformed long-chain PUFA (LC-PUFA) as dietary essential fatty acid (EFA). In this study, the response of juvenile barramundi (47·0 g/fish initial weight) fed isolipidic and isoenergetic diets with 8·2 % added oil was tested. The experimental test diets were either devoid of fish oil (FO), and thus with no n-3 LC-PUFA (FO FREE diet), or with a low inclusion of FO (FO LOW diet). These were compared against a control diet containing only FO (FO CTRL diet) as the added lipid source, over an 8-week period. Interim samples and measurements were taken fortnightly during the trial in order to define the aetiology of the onset and progression of EFA deficiency. After 2 weeks, the fish fed the FO FREE and FO LOW diets had significantly lower live-weights, and after 8 weeks significant differences were detected for all performance parameters. The fish fed the FO FREE diet also had a significantly higher incidence of external abnormalities. The transcription of several genes involved in fatty acid metabolism was affected after 2 weeks of feeding, showing a rapid nutritional regulation. This experiment documents the aetiology of the onset and the progression of EFA deficiency in juvenile barramundi and demonstrates that such deficiencies can be detected within 2 weeks in juvenile fish. |
| مصطلحات الفهرس: | EFA essential fatty acid, FM fish meal, FO fish oil, GLDH glutamate dehydrogenase, LC-PUFA long-chain PUFA, Aetiology, Barramundi, Deficiency, Essential fatty acids, Journal Article |
| URL: | issn: 1475-2662 British journal of nutrition |
| الإتاحة: | Open access content. Open access content 2015, Cambridge University Press (CUP) |
| ملاحظة: | 13 p. English |
| أرقام أخرى: | LD0 oai:dro.deakin.edu.au:DU:30079366 1313046647 |
| المصدر المساهم: | DEAKIN UNIV From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1313046647 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |