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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
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| one publication added to basket [220594] |
Protein level affects the relative lysine requirement of growing rainbow trout (Oncorhynchus mykiss) fry
Bodin, N.; Govaerts, B.; Abboudi, T.; Detavernier, C.; De Saeger, S.; Larondelle, Y.; Rollin, X. (2009). Protein level affects the relative lysine requirement of growing rainbow trout (Oncorhynchus mykiss) fry. Br. j. nutr. 102(1): 37-53. http://dx.doi.org/10.1017/S0007114508158986
In: British Journal of Nutrition. Cambridge University Press: London. ISSN 0007-1145; e-ISSN 1475-2662, meer
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| Trefwoorden |
Oncorhynchus mykiss (Walbaum, 1792) [WoRMS]
Marien/Kust; Brak water; Zoet water |
| Author keywords |
Growth requirements; Lysine requirement; Protein level; Rainbow trout fry |
| Auteurs | | Top |
- Bodin, N., meer
- Govaerts, B.
- Abboudi, T., meer
- Detavernier, C., meer
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| Abstract |
The effect of two digestible protein levels (310 and 469 g/kg DM) on the relative lysine (Lys; g Lys/kg DM or g Lys/100 g protein) and the absolute Lys (g Lys intake/kg0·75 per d) requirements was studied in rainbow trout fry using a dose–response trial. At each protein level, sixteen isoenergetic (22–23 MJ digestible energy/kg DM) diets were tested, involving a full range (2–70 g/kg DM) of sixteen Lys levels. Each diet was given to one group of sixty rainbow trout fry (mean initial body weight 0·78 g) reared at 15°C for 31 feeding d. The Lys requirements were estimated based on the relationships between weight, protein, and Lys gains (g/kg0·75 per d) and Lys concentration (g/kg DM or g/100 g protein) or Lys intake (g/kg0·75 per d), using the broken-line model (BLM) and the non-linear four-parameter saturation kinetics model (SKM-4). Both the model and the response criterion chosen markedly impacted the relative Lys requirement. The relative Lys requirement for Lys gain of rainbow trout estimated with the BLM (and SKM-4 at 90 % of the maximum response) increased from 16·8 (19·6) g/kg DM at a low protein level to 23·4 (24·5) g/kg DM at a high protein level. However, the dietary protein content affected neither the absolute Lys requirement nor the relative Lys requirement expressed as g Lys/100 g protein nor the Lys requirement for maintenance (21 mg Lys/kg0·75 per d). |
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