Growth performance, haematological parameters, antioxidant status and salinity stress tolerance of juvenile Pacific white shrimp (Litopenaeus vannamei ) fed different levels of dietary myo -inositol

Abstract

A 10‐week growth trial was run to evaluate effects of myo‐inositol (MI) on growth performance, haematological parameters, antioxidative capacity and salinity stress tolerance of Litopenaeus vannamei. Six practical diets supplemented with graded levels of MI (designated as MI0, MI600, MI1200, MI2400, MI 3600 and MI4800 for 448.8, 974.2, 1568.0, 2810.6, 3835.5 and 4893.6 mg/kg diet, respectively) were fed to six replicate groups of L. vannamei (mean initial body weight 0.63 ± 0.00 g). The results showed that significant increment of growth performance was observed in shrimp fed MI600 diet than those fed MI1200 diet. Lipid concentration in whole body of the shrimp fed MI600 diet was significantly increased. Shrimp fed MI0 diet had lower total protein (TP) as compared to shrimp fed the MI‐supplemented diets (except MI4800 diet). In general, lower activities of antioxidant enzymes and higher malondialdehyde (MDA) content in haemolymph and hepatopancreas were recorded in shrimp fed MI0 diet, compared to those fed the MI‐supplemented diets. Reduced survival after 7‐h salinity stress was present in shrimp fed MI0 diet as compared to those fed MI4800 diet. Dietary MI requirement for glutathione peroxidase activity of L. vannamei was 2705 mg/kg diet.

The feasibility of partial replacement fish meal with poultry by‐products in practical diets of juvenile great sturgeon, Huso huso : Effects on growth performance, body composition, physiometabolic indices, digestibility and digestive enzymes

“…Total protein of serum indicating the status fish plays a notable function in the transporting bilirubin and fatty acids, humoral defence system, steady pH, and maintaining normal osmotic pressure (Banavreh et al, 2019b;Chen et al, 2018). Zhu et al (2011) argued…”

“…Total protein of serum indicating the status fish plays a notable function in the transporting bilirubin and fatty acids, humoral defence system, steady pH, and maintaining normal osmotic pressure (Banavreh et al, 2019b; Chen et al, 2018). Zhu et al (2011) argued that the half‐level replacement of FM by a blend of rendered animal protein led to reduced total protein in Siberian sturgeon serum.…”

Effects ofmyo‐inositol on growth performance, body composition, antioxidant status, non‐specific immunity and lipid metabolism of juvenile Chinese mitten crab (Eriocheir sinensis)

“…Unlike fish, most crustacean species including E. sinensis lack adaptive immunity and mainly depend on the non‐specific immunity to resist pathogens (Kim et al., 2000; Qi et al., 2019). Serum TP plays an important role in humoural immunity, and haemocyanin is an important multifunctional protein involved in immune defence system in crustaceans (Chen et al., 2018; Decker et al., 2007). Alkaline phosphatase is an important lysosomal enzyme involved in regulation of basic biochemical processes in all organisms and is responsible for the hydrolysis of bacterial lipopolysaccharides (Bu et al., 2019; Eguchi, 1995).…”

“…In the present study, the serum TP and haemocyanin contents increased with increasing dietary MI levels and the highest serum AKP activity was found in those crabs fed 1,650 mg/kg MI. Various studies have shown that MI is an important substance for improving immunity of aquatic animals (Chen et al., 2018; Li et al., 2018). It was reported that dietary MI deficiency might break intestinal immune function through the NF‐κB and TOR pathway in grass carp ( Ctenopharyngodon idella ) (Li et al., 2018).…”

Dietary dl-methionyl-dl-methionine supplementation increased growth performance, antioxidant ability, the content of essential amino acids and improved the diversity of intestinal microbiota in Nile tilapia (Oreochromis niloticus)

“…To reduce oxidative stress or damage caused by reactive oxygen species, cells have developed a set of antioxidant defence systems involving antioxidant enzymes. SOD and CAT are the main antioxidant enzymes, and T-AOC can evaluate the antioxidant ability of organisms by non-enzymatic or enzymatic components (47) . MDA is a product of lipid peroxidation, which mainly evaluates the damage degree of cell structure and function by its content in serum or tissue (48) .…”