Feeding regime does not influence lysine utilisation by Atlantic salmon, Salmo salar L., parr
This study investigated whether the efficiency of lysine utilisation for liveweight gain, protein gain and lysine gain was affected by feeding regime in Atlantic salmon (Salmo salar L.) parr. Twelve diets containing from 10.15 to 20.79 g dietary digestible lysine kg− 1 were hand-fed either to satiat...
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2007
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Online Access: | https://eprints.utas.edu.au/4130/ https://eprints.utas.edu.au/4130/1/4130.pdf https://doi.org/10.1016/j.aquaculture.2007.10.045 |
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ftunivtasmania:oai:eprints.utas.edu.au:4130 2023-05-15T15:29:45+02:00 Feeding regime does not influence lysine utilisation by Atlantic salmon, Salmo salar L., parr Hauler, RC Carter, CG Edwards, SJ 2007-12 application/pdf https://eprints.utas.edu.au/4130/ https://eprints.utas.edu.au/4130/1/4130.pdf https://doi.org/10.1016/j.aquaculture.2007.10.045 en eng Elsevier BV https://eprints.utas.edu.au/4130/1/4130.pdf Hauler, RC, Carter, CG and Edwards, SJ 2007 , 'Feeding regime does not influence lysine utilisation by Atlantic salmon, Salmo salar L., parr' , Aquaculture, vol. 273, no. 4 , pp. 545-555 , doi:10.1016/j.aquaculture.2007.10.045 <http://dx.doi.org/10.1016/j.aquaculture.2007.10.045>. 300703 Aquaculture Amino acid requirements Atlantic salmon Factorial growth model Lysine requirements Lysine utilisation Article PeerReviewed 2007 ftunivtasmania https://doi.org/10.1016/j.aquaculture.2007.10.045 2020-05-30T07:18:00Z This study investigated whether the efficiency of lysine utilisation for liveweight gain, protein gain and lysine gain was affected by feeding regime in Atlantic salmon (Salmo salar L.) parr. Twelve diets containing from 10.15 to 20.79 g dietary digestible lysine kg− 1 were hand-fed either to satiation or to a controlled fixed ration. The controlled ration was set to equal the feed intake of the basal (lowest) lysine diet so that any growth above that of the group fed the basal diet at the controlled ration was due entirely to the additional dietary lysine. For both feeding regimes, with increasing dietary lysine there were significant linear increases in liveweight gain (P < 0.001) and in protein (P < 0.001) and lysine (P < 0.01) concentration of liveweight gain. Increasing dietary lysine resulted in a significant (P < 0.001) linear increase in feed intake at satiation. Efficiency of lysine utilisation for liveweight gain above maintenance lysine intake was significantly (P < 0.005) higher at satiation than for the controlled ration: 47.7 compared to 34.9 mg liveweight gain per mg digestible lysine intake, respectively. However, feeding regime had no significant effect on the efficiency of lysine utilisation for protein or lysine gain. This study demonstrated that feed intake does not influence the efficiency of lysine utilisation for protein or lysine gain in Atlantic salmon parr. The change in weight-specific lysine composition suggests a robust physiological mechanism maintaining the efficiency of lysine utilisation for lysine gain in Atlantic salmon parr. Article in Journal/Newspaper Atlantic salmon Salmo salar University of Tasmania: UTas ePrints Aquaculture 273 4 545 555 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
English |
topic |
300703 Aquaculture Amino acid requirements Atlantic salmon Factorial growth model Lysine requirements Lysine utilisation |
spellingShingle |
300703 Aquaculture Amino acid requirements Atlantic salmon Factorial growth model Lysine requirements Lysine utilisation Hauler, RC Carter, CG Edwards, SJ Feeding regime does not influence lysine utilisation by Atlantic salmon, Salmo salar L., parr |
topic_facet |
300703 Aquaculture Amino acid requirements Atlantic salmon Factorial growth model Lysine requirements Lysine utilisation |
description |
This study investigated whether the efficiency of lysine utilisation for liveweight gain, protein gain and lysine gain was affected by feeding regime in Atlantic salmon (Salmo salar L.) parr. Twelve diets containing from 10.15 to 20.79 g dietary digestible lysine kg− 1 were hand-fed either to satiation or to a controlled fixed ration. The controlled ration was set to equal the feed intake of the basal (lowest) lysine diet so that any growth above that of the group fed the basal diet at the controlled ration was due entirely to the additional dietary lysine. For both feeding regimes, with increasing dietary lysine there were significant linear increases in liveweight gain (P < 0.001) and in protein (P < 0.001) and lysine (P < 0.01) concentration of liveweight gain. Increasing dietary lysine resulted in a significant (P < 0.001) linear increase in feed intake at satiation. Efficiency of lysine utilisation for liveweight gain above maintenance lysine intake was significantly (P < 0.005) higher at satiation than for the controlled ration: 47.7 compared to 34.9 mg liveweight gain per mg digestible lysine intake, respectively. However, feeding regime had no significant effect on the efficiency of lysine utilisation for protein or lysine gain. This study demonstrated that feed intake does not influence the efficiency of lysine utilisation for protein or lysine gain in Atlantic salmon parr. The change in weight-specific lysine composition suggests a robust physiological mechanism maintaining the efficiency of lysine utilisation for lysine gain in Atlantic salmon parr. |
format |
Article in Journal/Newspaper |
author |
Hauler, RC Carter, CG Edwards, SJ |
author_facet |
Hauler, RC Carter, CG Edwards, SJ |
author_sort |
Hauler, RC |
title |
Feeding regime does not influence lysine utilisation by Atlantic salmon, Salmo salar L., parr |
title_short |
Feeding regime does not influence lysine utilisation by Atlantic salmon, Salmo salar L., parr |
title_full |
Feeding regime does not influence lysine utilisation by Atlantic salmon, Salmo salar L., parr |
title_fullStr |
Feeding regime does not influence lysine utilisation by Atlantic salmon, Salmo salar L., parr |
title_full_unstemmed |
Feeding regime does not influence lysine utilisation by Atlantic salmon, Salmo salar L., parr |
title_sort |
feeding regime does not influence lysine utilisation by atlantic salmon, salmo salar l., parr |
publisher |
Elsevier BV |
publishDate |
2007 |
url |
https://eprints.utas.edu.au/4130/ https://eprints.utas.edu.au/4130/1/4130.pdf https://doi.org/10.1016/j.aquaculture.2007.10.045 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_relation |
https://eprints.utas.edu.au/4130/1/4130.pdf Hauler, RC, Carter, CG and Edwards, SJ 2007 , 'Feeding regime does not influence lysine utilisation by Atlantic salmon, Salmo salar L., parr' , Aquaculture, vol. 273, no. 4 , pp. 545-555 , doi:10.1016/j.aquaculture.2007.10.045 <http://dx.doi.org/10.1016/j.aquaculture.2007.10.045>. |
op_doi |
https://doi.org/10.1016/j.aquaculture.2007.10.045 |
container_title |
Aquaculture |
container_volume |
273 |
container_issue |
4 |
container_start_page |
545 |
op_container_end_page |
555 |
_version_ |
1766360182333374464 |