Dietary vitamin E could improve growth performance, lipid peroxidation and non-specific immune responses for juvenile cobia (Rachycentron canadum)

Abstract

An 8-week feeding trial was conducted to establish the dietary vitamin E requirement of juvenile cobia. The basal diet was supplemented with 10, 20, 30, 40, 60, 120 mg vitamin E kg À1 as all-rac-a-tocopheryl acetate. The results indicated that fish fed the diets supplemented vitamin E had significantly higher specific growth rate, protein efficiency ratio, feed efficiency and survival rate than those fed the basal diet. It was further observed that vitamin E concentrations in liver increased significantly when the dietary vitamin E level increased from 13.2 to 124 mg kg À1 . Fish fed the basal diet had significantly higher thiobarbituric acid-reactive substances concentrations in liver than those fed the diets supplemented vitamin E. Fish fed the diets supplemented with 45.7 and 61.2 mg kg À1 vitamin E had significantly higher red blood cell and haemoglobin than those fed the basal diet, while fish fed the diets supplemented with 61.2 and 124 mg kg À1 vitamin E had higher immunoglobulin concentration than those fish fed the basal diet. Lysozyme and superoxide dismutase were significantly influenced by the dietary vitamin E level. The dietary vitamin E requirement of juvenile cobia was established based on second-order polynomial regression of weight gain and lysozyme to be 78 or 111 mg all-rac-a-tocopheryl acetate kg À1 diet, respectively.

Evaluation the effect of thiamin deficiency on intestinal immunity of young grass carp (Ctenopharyngodon idella)

“…Based on PWG, the dietary thiamin requirement of young grass carp (242e742 g) was firstly estimated to be 0.90 mg/kg diet, which was lower than that based on LA (1.15 mg/kg diet). This result is similar with the study on dietary vitamin E requirement of cobia (Rachycentron canadum) [34].…”

“…PWG and LA are often used to estimate the nutrients requirement of fish [34]. Based on PWG, the dietary thiamin requirement of young grass carp (242e742 g) was firstly estimated to be 0.90 mg/kg diet, which was lower than that based on LA (1.15 mg/kg diet).…”

“…To date, study only investigated the dietary thiamin requirement of juvenile grass carp [5], the dietary thiamin requirement of young grass carp has not been determined. Furthermore, the nutrients requirement of fish may vary with growth stages [3] and different sensitive indices [34]. Hence, it is valuable to investigate the dietary thiamin requirement of young grass carp based on immune index and growth performance.…”

Effects of dietary administration of guanosine monophosphate on the growth, digestibility, innate immune responses and stress resistance of juvenile red sea bream, Pagrus major

“…The WG and LA activity are often used to estimate the optimum supplementation level of nutrient components in fish [82,83]. Based on the quadratic regression analysis of WG and LA, the present study illustrated that the optimal levels of dietary GMP for juvenile red sea bream might be 0.48% and 0.45% respectively which is also inline with the most of the growth performance and health parameters of fish under present experimental condition.…”

Selenium and Vitamin in Diets for Tilapia-Do-Nilo

“…Algumas pesquisas em diversas espécies aquáticas indicaram que a suplementação de vitamina E pode melhorar o desempenho do crescimento (KOCABAS e GATLIN, 1999;ZHOU et al, 2013;LI et al, 2013), aumentar a capacidade antioxidante e imunidade (ZHOU et al, 2013.;LI et al, 2013) e restaurar a imunidade diminuída MUKHERJEE, 2002). Os sinais de deficiência de vitamina E em vários peixes são semelhantes, e incluem distrofia muscular, aumento de edema e queda de hemoglobina (NRC, 2011).…”