Rubi

Offentlig prosjektsammendrag

Throughout the years, numerous scientific projects have been carried out to optimize fish farm conditions and improve productivity. To this end, special attention has been given to fish nutrition in terms of nutrient levels and raw material composition and the modern commercial feeds supports a more efficient growth with a low level of marine ingredients and with a broader range of alternative raw materials than used in the earlier feeds. Besides performance is also a proper pigmentation of the flesh in salmonids an important product feature. Earlier studies have reported about several nutritional factors influencing the pigmentation of the salmonid muscle. Also, environmental factors like temperature and the current commercial practices in salmon farming which involves several events that promote stress, such as handling and crowding prior to transportation, or sea lice treatments are shown to have an impact on the pigmentation. So, one of the main challenges is that it seems that it is not only one main factor which is playing a crucial role for the final pigmentation in the fillet, but an interaction between several factors. In this project we will investigate the impact of feed composition, environmental conditions, and stress, on the underlying physiological mechanism in pigment absorption, transport and incorporation into the fillet.