Effect of dietary chromium picolinate on growth performance and blood parameters in grass carp fingerling, Ctenopharyngodon idellus

Abstract

An experiment was conducted to investigate the effect of dietary chromium picolinate supplement on growth and haematology parameters of grass carp, Ctenopharyngodon idellus. Six diets with increasing dietary chromium picolinate levels 0, 0.2, 0.4, 0.8, 1.6 and 3.2 mg kg(-1) were fed to triplicate groups of 20 fish (initial weight of 12.78 +/- 1.16 g, mean +/- SD) in a flow water system for 10 weeks. Fish fed the diet supplemented with 0.8 mg Cr kg(-1) had significantly improved weight gain (WG), feed efficiency ratio (FER), protein efficiency ratio (PER) and protein retention (PR). Fish fed high-chromium diets exhibited lower whole-body crude lipid contents than fish fed low-chromium diets. Liver glycogen concentrations for fish fed the diet with 0.2 mg Cr kg(-1) was the highest (77.67 mg g(-1)). Fish fed the diet supplemented with 1.6 and 3.2 mg Cr kg(-1) had significantly lower liver glycogen concentrations than other groups (P < 0.05). The highest serum insulin concentrations were observed in fish fed the diet supplemented with 0.8 mg Cr kg(-1), but serum insulin concentrations decreased (P < 0.05) when dietary supplementation of chromium was higher than 0.8 mg Cr kg(-1). Cholesterol concentrations decreased in direct proportion to dietary chromium level and achieved the lowest level when the fish were fed the 0.8 mg Cr kg(-1) diet, but increased when the fish were fed the diet with more than 0.8 mg Cr kg(-1) (P < 0.05). Fish fed the diet supplemented with 0.8 mg Cr kg(-1) had higher triglyceride and high-density lipoprotein cholesterol (HDL-C) concentrations compared to other treatments. The results of the present study suggested that chromium picolinate could modify serum carbohydrate and lipid metabolism profile, and that the optimal dietary chromium level was 0.8 mg kg(-1) for grass carp according to growth.

Effects of chromium yeast, tributyrin and bile acid on growth performance, digestion and metabolism ofChanna argus

“…In addition, chromium can improve the growth performance of Japanese quails (Abdelsamee, Elwardany, Ali, & Aboelazab, ) and tilapia ( Oreochromis niloticus × Oreochromis aureus ) (Shiau & Chen, ). The dietary inclusion of chromium can significantly improve WGR and FCR of grass carp (Liu et al, ). It maybe because chromium is an active ingredient of glucose tolerance factor, which can synergize the role of INS (Schwartz & Mertz, ), promoting the metabolism of carbohydrate, thereby improving the growth performance.…”

Bioefficacy of dietary chromium picolinate and chromium yeast on growth performance and blood biochemical in Red Tilapia, Oreochromis niloticus (Linnaeus)

“…Chromium enhances the action of insulin (Boyd, ; Hua, Clark, Ren & Sreejayan, ) and plays a key role in lipid, protein and nucleic acid metabolism (Amata, ). In addition, chromium decreases cholesterol and triglycerides (Giri, Sahu, Saharan & Dash, ; Jain, Rains & Croad, ) and increases the concentration of serum insulin and high‐density lipoprotein (HDL) (Liu et al., ; Sahin, Kucuk, Sahin & Ozbey, ).…”

Effects of dietary dextrin on growth, feed utilization and body composition of juvenile Chinese sturgeon,Acipenser sinensisGray, 1835

“…The mixture was cold‐pelleted using a custom‐made laboratory pellet mill (2‐mm diameter). The resulting pellets were air‐dried and stored at −20°C (Liu et al., ).…”