Influence of 5′‐inosine monophosphate and 5′‐guanosine monophosphate on growth, feed digestibility and activity of digestive enzymes in turbot Scophthalmus maximus

Abstract

We evaluated the influence of different proportions of 5′‐inosine monophosphate (IMP) and 5′‐guanosine monophosphate (GMP) on growth, feed digestibility and activity of digestive enzymes of turbot Scophthalmus maximus. Weight gain and daily feed intake were significantly higher in S. maximus fed with IMP or GMP, in comparison with fish fed with neither IMP nor GMP. The growth of 0.05% IMP + 0.05% GMP group was the best, and the intestinal digestive function was improved. The addition of IMP and GMP to fish diets significantly increased the apparent feed digestibility coefficient of dry matter and protein, as well as intestinal protease activity. The highest intestinal protease activity was observed in fish fed with 1 g/kg IMP. However, the lipase activity in hepatopancreas decreased significantly after addition of nucleic acid. According to our results, the optimal level of dietary IMP is 1 g/kg, which is in line with most of the growth performance and feed digestibility.

Feed efficiency, nutrient sensing and feeding stimulation in aquaculture: A review

“…Taurine was not a feeding stimulant, and betaine was neither a feeding stimulant nor feed enhancer for the juvenile O. marmoratus. Xia et al (2019) studied the influence of different proportions of 5′-inosine monophosphate (IMP) and 5′-guanosine monophosphate (GMP) on growth, feed digestibility and activity of digestive enzymes of turbot Scophthalmus maximus. Weight gain and daily feed intake were significantly higher in fish fed with IMP or GMP, in comparison with fish fed with neither IMP nor HANCZ ACTA AGRARIA KAPOSVÁRIENSIS 2020(24)1 47 GMP.…”

Comparative assessment of purine nucleotides adenosine, guanosine and inosine monophosphates as functional supplements on growth and health performances of red sea bream,Pagrus majorjuvenile

“…Most of the research on NT nutrition of fish has mainly focused on mixed NT rather than individual NT. Recently, several experiments have been conducted with different individual purine and pyrimidine NT along with mixed NT on marine and freshwater fish species like red sea bream Pagrus major (Hossain et al., 2016a, 2016b, 2016c, 2016d, 2016e) amberjack Seriola dumerili (Hossain et al., 2017a), Nile tilapia Oreochromis niloticus (Kader et al, 2018) and turbot Scophthalmus maximus (Xia et al., 2020). Findings of these researches showed response variations in terms of growth, feed utilization, optimum dose of supplementation, immune response and stress resistance of fish with the variation of NT.…”