Using dietary additives to improve palatability of diets containing single‐cell protein from methanotrophic bacteria in yellowtail kingfish ( Seriola lalandi ) diets

Abstract

Each year approximately 18 million tonnes of wild-caught fish are converted into 5 million tonnes of fishmeal, a quantity that has been relatively constant over the last 10 years (FAO, 2020). Approximately, 70% of this fishmeal is used in aquafeeds. Fishmeal is a natural and subsequently ideal protein source for aquafeeds, having ~60 to 72% highly digestible protein with a well-balanced amino acid (AA) profile (Miles & Chapman, 2006). The global aquaculture industry is rapidly expanding, and in 2018 production of finfish reached 54.2 million tonnes, up from 37.7 million tonnes in 2010 (FAO, 2020). If aquaculture is to maintain this growth trajectory in the face of a stable

A field evaluation of orally administered praziquantel against the gill fluke Sparicotyle chrysophrii infecting gilthead seabream (Sparus aurata)

“…Reduced efficacy of PZQ may be attributed to its bitter taste, causing palatability problems and diminished consumption of the PZQ‐medicated diets (Partridge et al, 2014). Reduced intake of PZQ‐medicated diets necessitates the inclusion of masking agents (Pilmer, 2016) along with specific feed management to improve feed acceptance. The PZQ‐medicated diet administered to gilthead seabream was well accepted herein, as was recently seen in Z. seriolae ‐infected greater amberjack (Rigos et al, 2021).…”

Replacement of fishmeal with a microbial single‐cell protein induced enteropathy and poor growth outcomes in barramundi (Lates calcarifer) fry

“…Palatability issues with SCPs have been demonstrated for other fish species (Biswas et al, 2021), with dietary additives (or flavour enhancers) generally needed to increase palatability and feed intake (Pilmer et al, 2022).…”

Antiparasitic approaches and strategies in European aquaculture, with emphasis on Mediterranean marine finfish farming: Present scenarios and future visions

“…Due to its bitter taste, dietary administration of PZQ has been associated with palatability problems, 216 which could inevitably cause a failure of therapeutic attempts. Reduced intake of PZQ‐medicated diets necessitates the inclusion of masking agents 217 and specific feed management to enhance feed acceptance. Absorption of PZQ seems to be promising in gilthead seabream (Kogiannou et al, in preparation) and yellowtail amberjack ( S. lalandi ), 218 reaching values as high as 50%, which is higher than the value estimated for terrestrial animals (3%–32%), 219–222 perhaps due to considerable first‐pass effect on absorbed PZQ on livestock 206 …”