Featured Research

from universities, journals, and other organizations

Health-related Loss In Salmon Farming

Date:
June 30, 2009
Source:
Norwegian School of Veterinary Science
Summary:
New research shows that health-related loss in modern salmon farming may be systematically monitored and quantified, both in biological and economical terms.

Ørnøya premises.
Credit: Image courtesy of Norwegian School of Veterinary Science

Norwegian veterinary scientist Arnfinn Aunsmo showed in his doctorate that health-related loss in modern salmon farming may be systematically monitored and quantified, both in biological and economical terms.

The salmon farming industry is characterised both nationally and internationally by large swings in profitability, a large part of which is due to health-related challenges. However, in order to address health-related problems and use resources optimally, it is first necessary to find out how health status influences biological production. This has now been down, thanks to Aunsmo's own field studies and analyses of selected private and public databases.

The doctorate describes biological and economic models for quantification of health-related loss in salmon farming. It further describes how health-related loss may be monitored systematically both at farm level and by the industry as a whole. The statistical methods used in these analyses of information from salmon farming are innovative and world-class.

Specific causes of death were investigated in a study of 10 localities from Rogaland to Troms. The study forms a basis for a description of methods of quantitative monitoring of causes of death in aquaculture.

Better methods of mapping side-effects

In two studies, vaccines were found to be risk factors for spinal deformities in salmon. Fish with spinal deformities had in addition a significant growth rate reduction. In addition, it was shown in one study that the use of oil-based vaccines leads to a weight loss of 0.5kg in slaughter-weight salmon. The work describes better methods of mapping the side-effects of fish vaccines.

The expense of an outbreak of pancreas disease (PD) on the Norwegian west coast was in one economic model calculated to be NOK 14,400,000 for a typical farm with some 500,000 smolts. This economic model can be used for general economic evaluations of health effects and in coast-benefit analyses of counter-measures.

This doctoral work was carried out at the Centre of Epidemiology and Biostatistics of the Norwegian School of Veterinary Science, in close collaboration with private companies such as Marine Harvest, SalMar, Pharmaq, AquaGen, and others, and regulatory bodies such as the National Veterinary Institute and the Norwegian Food Safety Authority.

Arnfinn Aunsmo defended his Ph.D. thesis, entitled "Health related losses in sea farmed Atlantic salmon - quantification, risk factors and economic impact", at the Norwegian School of Veterinary Science, on May 12, 2009.


Story Source:

The above story is based on materials provided by Norwegian School of Veterinary Science. Note: Materials may be edited for content and length.


Cite This Page:

Norwegian School of Veterinary Science. "Health-related Loss In Salmon Farming." ScienceDaily. ScienceDaily, 30 June 2009. <www.sciencedaily.com/releases/2009/06/090615111755.htm>.
Norwegian School of Veterinary Science. (2009, June 30). Health-related Loss In Salmon Farming. ScienceDaily. Retrieved September 17, 2014 from www.sciencedaily.com/releases/2009/06/090615111755.htm
Norwegian School of Veterinary Science. "Health-related Loss In Salmon Farming." ScienceDaily. www.sciencedaily.com/releases/2009/06/090615111755.htm (accessed September 17, 2014).

Share This



More Plants & Animals News

Wednesday, September 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Some Tobacco Farmers Thrive Amid Challenges

Some Tobacco Farmers Thrive Amid Challenges

AP (Sep. 16, 2014) — The South's tobacco country is surviving, and even thriving in some cases, as demand overseas keeps growers in the fields of one of America's oldest cash crops. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Scientists Given Rare Glimpse of 350-Kilo Colossal Squid

Scientists Given Rare Glimpse of 350-Kilo Colossal Squid

AFP (Sep. 16, 2014) — Scientists say a female colossal squid weighing an estimated 350 kilograms (770 lbs) and thought to be only the second intact specimen ever found was carrying eggs when discovered in the Antarctic. Duration: 00:47 Video provided by AFP
Powered by NewsLook.com
Raw: Scientists Examine Colossal Squid

Raw: Scientists Examine Colossal Squid

AP (Sep. 16, 2014) — Squid experts in New Zealand thawed and examined an unusual catch on Tuesday: a colossal squid. It was captured in Antarctica's remote Ross Sea in December last year and has been frozen for eight months. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Ivorians Abandon Monkey Pets in Fear Over Ebola Virus

Ivorians Abandon Monkey Pets in Fear Over Ebola Virus

AFP (Sep. 16, 2014) — Since the arrival of Ebola in Ivory Coast, Ivorians have been abandoning their pets, particularly monkeys, in the fear that they may transmit the virus. Duration: 00:47 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

    Environment News

      Technology News



      Save/Print:
      Share:  

      Free Subscriptions


      Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

      Get Social & Mobile


      Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

      Have Feedback?


      Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
      Mobile iPhone Android Web
      Follow Facebook Twitter Google+
      Subscribe RSS Feeds Email Newsletters
      Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins