Effects of nucleotides supplemented diets on growth performance and expressions of ghrelin and insulin-like growth factor genes in Nile tilapia, Oreochromis niloticus

ABSTRACT The aim of the current study was to evaluate the dietary supplementations of a yeast nucleotide (NT) in doses of 0.0, 0.5, 1.5 and 2.5 g NT/kg diet on growth, hemato-biochemical parameters and expressions of some growth-related genes in Nile tilapia, Oreochromis niloticus. After 60 days, highest growth performance, feed utilization, and protein efficiency ratio were recorded in fish fed 2.5 g NT/kg diet. The haemato-biochemical parameters showed the highest significant values in NT-fed fish compared with the control one. Significant increases in values of serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), Alkaline Phosphatase (ALP), urea, and creatinine were observed in fish supplemented with 2.5 g NT/kg diet. Stimulatory effects on lipase, amylase, and growth hormone were observed in higher NT-supplemented fish groups. The highest whole body protein and fat contents were recorded in fish fed 0.5 and 2.5 g NT/kg diet, respectively. Ghrelin and insulin-like growth factor gene expressions showed significant up-regulation in the fish supplemented with 1.5 and 2.5 g NT/kg diet, successively. The results recommended the administration of dietary NT at percentages of 1.5– 2.5 g NT/kg diet had beneficial effects on Nile tilapia.

• Publication year

  2020

• Venue

  Journal of Applied Aquaculture

• Publication date

  2020-04-02

• Fields of study

  Agricultural and Food Sciences, Biology

• Identifiers
  DOI 10.1080/10454438.2019.1696911
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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