Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 455406
Title Forced sustained swimming exercise at optimal speed to enhance growth performance of yellotail kingfish (Seriola lalandi)
Author(s) Mes, D.; Kloet, K.; Blonk, R.J.W.; Palstra, A.P.
Source In: Book of abstractsof the International Congress on th Biology of Fish. - - p. 162 - 162.
Event 11th International Congress on the Biology of Fish, Edinburgh, UK, 2014-08-03/2014-08-07
Department(s) Aquaculture
Wageningen Marine Research
Publication type Abstract in scientific journal or proceedings
Publication year 2014
Abstract Juvenile yellowtail kingfish were either forced to perform sustained swimming exercise at an optimal speed of 2.46 body-lengths per second (‘swimmers’) or allowed to perform spontaneous activity at low water flow (‘resters’) in a 3,600 L oval-shaped flume with flow created by an impeller driven by an electric motor. At the start of the experiment, ten fish were sampled as controls (346±6mm, 504±27g). After 18 days, swimmers (n=23; 385±4mm, 735±23g) showed a 92% greater increase in body-length and 46% greater increase in body-weight as compared to resters (n=23; 367±5mm, 661±32g). As both groups were fed equal portions, the feed conversion ratio (FCR) for swimmers was 1.21 and lower than 1.74 for resters. Using Doppler ultrasound imaging, we found a 31% higher blood flow in the ventral aorta of swimmers vs. resters (respect. 44±3 ml/min vs. 34±3 ml/min, under anaesthesia). This study shows that growth performance can be rapidly improved by optimal swimming, even without larger feed investments.
Comments
There are no comments yet. You can post the first one!
Post a comment
 
Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.