Investigation of Weight Loss in Pacific Cod Due to Exsanguination

November 01, 2011

This study examines weight loss due to exsanguination by sampling Pacific cod at time intervals of 30 seconds, 1:00 minute, and 1:30 minutes after landing.

Exsanguination, or bleeding, is an important processing step at the time of capture to obtain high product quality, including freshness and the visual appearance of fillets. NOAA Fisheries is responsible for assessing fishery  catch, which is generally a round weight estimate collected prior to any processing, including exsanguination. However, longline vessels present a special situation because exsanguination is required prior to weighing, which may create a bias in round weight estimates due to lost blood weight.

Last updated by Alaska Regional Office on 02/26/2019

Alaska Groundfish Research Alaska Groundfish Management