Temperature influence on roe fertilization in Atlantic Salmon aquaculture.

Abstract

Today the Atlantic salmon is breed in fresh water facilities on land and in marine environment around the world. In aquaculture the roe are fertilized and hatched in fresh water facilities. These are sold to marine farms as eyed roe or fry. In the roe production there are many factors affecting the production. One of these factors is the water temperature. In the Faroe Island Fiskaaling is the only company fertilizing and selling roe to the marine farms. The aim of this experiment is to examine how the water temperature influences the fertilization percentage of roe in Atlantic salmon aquaculture. Addition to the set-up of instruments, there were 16 cylinders made for the project. Two experiments, fertilizing roe in 7 different temperatures, were made. In addition to the experiment, data over 3 years from Fiskaalings fertilizations were added to the analysis. In the data analysis the temperature influence on the fertilization percentage, the difference in fertilization percentages when using gonads and milt and influence of day degrees on the fertilization temperature were examined.

Date of Award	2018
Original language	English
Awarding Institution	Náttúruvísindadeildin - Faculty of Science and Technology
Supervisor	Gunnvør á Norði (Supervisor) & Eyðfinn Magnussen (Supervisor)