By Aquafeed.com Staff, 07/11/2018
Researchers at Nofima have discovered that a mineral-rich ingredient extracted from fish bones can affect the color of salmon muscles. In experiments where salmon were fed diets containing the ingredient, the color level of the salmon muscles increased considerably by 35 per cent. The salmon’s ability to digest astaxanthin increased by nearly 20 per cent in fish fed the mineral ingredient, while the pigment levels in both the blood and liver also increased. “We believe that the main explanation of why the muscle becomes redder is that the salmon digest more of the astaxanthin with the mineral ingredient present in the feed."