Use of biological nano zinc as a feed additive in quail nutrition: biosynthesis, antimicrobial activity and its effect on growth, feed utilisation, blood metabolites and intestinal microbiota

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