Abstract

A total of 200 1-week-old Japanese quails were randomly allocated into five treatment groups, each consisting of 40 unsexed birds (five replicates, eight birds each). Quails were reared in traditional cages (90 × 40 × 40 cm), and feed and water were made available throughout the 5-week trial. The treatment groups were as follows: the 1st was fed basal diet, whereas the 2nd, 3rd, 4th, and 5th groups were fed with ration supplemented with nano zinc (Zn-NPs) at doses of 0.1, 0.2, 0.3, and 0.4 g/kg diet, respectively. Results showed that, a significant (p ≤ .0001) improvement in body weight, weight gain, feed intake, and feed conversion ratio was observed in birds fed diets supplemented with 0.2 g/kg of Zn-NPs. Supplementation of Zn-NPs at doses of 0.1–0.3 g/kg diet demonstrated a positive impact on the activity of ALT, AST, and LDH. The liver profile parameters were not statistically influenced (p > .05) by dietary biological nano zinc, with the exception of total cholesterol (TC), high density lipoprotein (HDL), and low density lipoprotein (LDL). Also, dietary supplementation of biological Zn-NPs at concentrations of 0.1–0.3 g/kg diet demonstrated a positive impact on superoxide dismutase (SOD), glutathione peroxidase (GPX), malondialdehyde (MDA), immunoglobulin G (IgG), and immunoglobulin M (IgM). Dietary supplementation of Zn-NPs led to an increase in beneficial microbial populations. From the obtained results, Zn-NPs supplementation at 0.2 g/kg diet had a positive effect on the performance and physiological status of growing Japanese quails.

• HIGHLIGHTS

• Zinc (Zn) is an important trace element for the general functioning of the animal body.

• A significant improvement in growth performance was observed in birds fed diet enriched with 0.2 g/kg of Zn-NPs.

• Supplementation of Zn-NPs (0.1–0.3 g/kg diet) demonstrated a positive impact on immunity and antioxidant indices

摘要

总共将200只1周龄的日本鹌鹑随机分为五个治疗组，每组由40只未性别的鸟组成（五只重复，每只八只鸟）。在传统的网箱（90×40×40 cm）中饲养鹌鹑，在整个5周的试验中，饲料和水均可用。治疗组如下：第1组以基础饮食喂养，而第2、3、4和5组以定量添加0.1、0.2、0.3和0.4 g的纳米锌（Zn-NPs）喂养。 / kg饮食。结果表明，一个显著（p ≤.0001）在饲喂添加了0.2 g / kg Zn-NPs的家禽中观察到体重，体重增加，采食量和饲料转化率得到改善。饮食中添加0.1–0.3 g / kg饮食中的Zn-NPs对ALT，AST和LDH的活性具有积极影响。肝轮廓参数不受统计影响（p > 0.05）的饮食生物纳米锌，总胆固醇（TC），高密度脂蛋白（HDL）和低密度脂蛋白（LDL）除外。此外，饮食中添加0.1-0.3 g / kg饮食的生物Zn-NPs对超氧化物歧化酶（SOD），谷胱甘肽过氧化物酶（GPX），丙二醛（MDA），免疫球蛋白G（IgG）和免疫球蛋白M具有积极影响（IgM）。膳食中锌-纳米颗粒的补充导致有益微生物种群的增加。从获得的结果来看，以0.2 g / kg的日粮添加Zn-NPs对生长的日本鹌鹑的性能和生理状况具有积极的影响。

• 强调

• 锌（Zn）是动物机体一般功能的重要微量元素。

• 在饲喂富含0.2 g / kg Zn-NP的日粮中，观察到了生长性能的显着改善。

• 补充Zn-NPs（0.1–0.3 g / kg饮食）对免疫和抗氧化指标有积极影响