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Standardized method for the Holmen pellet tester (NHP100) as a tool for evaluating the physical quality of fish feed

Wolska, Julia LU ; Holst, Olle LU ; Adlercreutz, Patrick LU and Jonkers, Jan (2016) In Aquaculture Research 47(6). p.1790-1796
Abstract

The fish feed production industry requires reliable methods measuring the physical quality of feed before it is being released to the customer. The Holmen pellet tester (NHP 100) could be adapted for this purpose, but the special characteristics of fish feed require particular care during testing. The aim of the study was to determine the standardized conditions for using the Holmen tester as a tool measuring the durability of fish feed. Screening tests were performed on commercial fish feed samples to assess the effects of temperature, pressure and cleaning the instrument between runs. The operating pressure was found to be the most important factor that can influence the results. The temperature of the operating air can also alter the... (More)

The fish feed production industry requires reliable methods measuring the physical quality of feed before it is being released to the customer. The Holmen pellet tester (NHP 100) could be adapted for this purpose, but the special characteristics of fish feed require particular care during testing. The aim of the study was to determine the standardized conditions for using the Holmen tester as a tool measuring the durability of fish feed. Screening tests were performed on commercial fish feed samples to assess the effects of temperature, pressure and cleaning the instrument between runs. The operating pressure was found to be the most important factor that can influence the results. The temperature of the operating air can also alter the results; increased temperatures can cause oil to melt and leak from the pellets. Cleaning the instrument between analyses can also affect the results. This study shows that when these factors are maintained at a standardized level, the Holmen pellet tester is a valuable tool for assessing the physical quality of fish feed giving additional information on the quality of feed pellets compared to other durability tests like DORIS.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Durability, Extrusion, Fish feed, Technical quality
in
Aquaculture Research
volume
47
issue
6
pages
7 pages
publisher
John Wiley & Sons
external identifiers
  • Scopus:84964766167
ISSN
1355-557X
DOI
10.1111/are.12637
language
English
LU publication?
yes
id
da0d7ecb-047d-48d4-9145-83d0b7a4f80a
date added to LUP
2016-09-27 13:26:49
date last changed
2016-09-27 13:26:49
@misc{da0d7ecb-047d-48d4-9145-83d0b7a4f80a,
  abstract     = {<p>The fish feed production industry requires reliable methods measuring the physical quality of feed before it is being released to the customer. The Holmen pellet tester (NHP 100) could be adapted for this purpose, but the special characteristics of fish feed require particular care during testing. The aim of the study was to determine the standardized conditions for using the Holmen tester as a tool measuring the durability of fish feed. Screening tests were performed on commercial fish feed samples to assess the effects of temperature, pressure and cleaning the instrument between runs. The operating pressure was found to be the most important factor that can influence the results. The temperature of the operating air can also alter the results; increased temperatures can cause oil to melt and leak from the pellets. Cleaning the instrument between analyses can also affect the results. This study shows that when these factors are maintained at a standardized level, the Holmen pellet tester is a valuable tool for assessing the physical quality of fish feed giving additional information on the quality of feed pellets compared to other durability tests like DORIS.</p>},
  author       = {Wolska, Julia and Holst, Olle and Adlercreutz, Patrick and Jonkers, Jan},
  issn         = {1355-557X},
  keyword      = {Durability,Extrusion,Fish feed,Technical quality},
  language     = {eng},
  month        = {06},
  number       = {6},
  pages        = {1790--1796},
  publisher    = {ARRAY(0x8079658)},
  series       = {Aquaculture Research},
  title        = {Standardized method for the Holmen pellet tester (NHP100) as a tool for evaluating the physical quality of fish feed},
  url          = {http://dx.doi.org/10.1111/are.12637},
  volume       = {47},
  year         = {2016},
}