Rohani Md Fazle, Tarin Tamanna, Hasan Jabed, Islam S M Majharul, Shahjahan Md
Laboratory of Fish Ecophysiology, Department of Fisheries Management, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh.
Saudi J Biol Sci. 2023 Feb;30(2):103558. doi: 10.1016/j.sjbs.2023.103558. Epub 2023 Jan 13.
Vitamin E (VE), an important lipid-soluble antioxidant, has great influence on growth and maintenance in animal. The effects of VE supplemented diet on growth and feed usage in Nile tilapia () was investigated in this study. Three formulated diets containing VE (0, 50 and 100 mg/kg) were fed to Nile tilapia (3.56 ± 0.16 g) in glass aquaria maintaining three replicate groups for 56 days (8 weeks). Survival, growth performance including weight gain, percent weight gain, and specific growth rate (WG, % WG, and SGR), and feed utilization comprising protein efficiency ratio and feed conversion ratio (PER and FCR) were calculated. Hemato-biochemical indices including hemoglobin level (Hb), white blood cell (WBC), red blood cell (RBC) and glucose level were analyzed. In addition, muscle morphology was examined after completion of the experiment. At the end of the trial, WG, %WG, SGR, FCR and PER increased significantly which had dietary VE supplimentation. However, no distinct changes were observed in Hb level, RBC count, WBC count and glucose level among these different dietary groups. Dietary VE treatments significantly upgraded the muscle fiber diameter and lowered the intra-muscle gap. Moreover, quantity of hyperplastic muscle fiber as well as nucleus also significantly enhanced by VE. Morphological structure of muscle characterized by a huge proportion of hyperplastic muscle that may be supposed to contribute the enhanced growth of Nile tilapia receiving VE supplemented diet. Therefore these results suggested that VE incorporation into the feed can be effective to improve the feed efficiency and maximize the growth of .
维生素E（VE）是一种重要的脂溶性抗氧化剂，对动物的生长和维持有很大影响。本研究调查了添加VE的饲料对尼罗罗非鱼生长和饲料利用的影响。将三种含VE（0、50和100毫克/千克）的配方饲料投喂给玻璃水族箱中体重为3.56±0.16克的尼罗罗非鱼，每组设三个重复，为期56天（8周）。计算存活率、生长性能（包括体重增加、体重增加百分比和特定生长率（WG、%WG和SGR））以及饲料利用率（包括蛋白质效率比和饲料转化率（PER和FCR））。分析血液生化指标，包括血红蛋白水平（Hb）、白细胞（WBC）、红细胞（RBC）和葡萄糖水平。此外，实验结束后检查肌肉形态。试验结束时，添加VE的饲料组的WG、%WG、SGR、FCR和PER显著增加。然而，不同饲料组之间的Hb水平、RBC计数、WBC计数和葡萄糖水平没有明显变化。饲料中添加VE显著提高了肌肉纤维直径并减小了肌内间隙。此外，VE还显著增加了增生性肌纤维以及细胞核的数量。肌肉的形态结构以大量增生性肌肉为特征，这可能有助于接受添加VE饲料的尼罗罗非鱼生长加快。因此，这些结果表明，在饲料中添加VE可有效提高饲料效率并使尼罗罗非鱼的生长最大化。
