High water temperature support for farmed Abalone

It is widely understood that each fish species has an optimum temperature range and will lose appetite and grow more slowly when water temperatures go much above that range. Until recently the physical effects on the fish leading to these symptoms were not understood.

A collaborative research project identified that during high temperature the fish's gut wall is more permeable, making them more vulnerable to invasion by pathogens. In addition, there is a faster metabolism of anti-oxidants and the disruption of gut microbiota leads to loss of appetite.

Our scientists at Skretting Aquaculture Research Centre (ARC) developed a feed solution to the problem, our HT (high temperature) concept. One particular combination of micro-ingredients resulted in fish that were healthier, ate more, grew better and had a lower feed conversion ratio.

Since being developed for Atlantic salmon, the HT concept has been applied to other species, including abalone. Abalone can be impacted significantly by the effects of high water temperatures during summer, so we have applied the HT concept to our range of abalone feeds.

To see locally documented trial results, refer to our customer magazine Nexus Issue 19