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

Italian Journal of Animal Science

Talaat K. El-Rayes¹  Mahmoud Madkour²  Mohamed T. El-Saadony³  Sarah Y.A Ahmed⁴  Sabry A.A El-Sayed⁵  Adel I. Attia⁶  Mahmoud Alagawany⁶  Fayiz M. Reda⁶ 

[1] Animal Production Department, Faculty of Agriculture, Tanta University;Animal Production Department, National Research Centre;Department of Agricultural Microbiology, Faculty of Agriculture, Zagazig University;Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University;Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University;Poultry Department, Faculty of Agriculture, Zagazig University;

关键词: biological nano zinc;    growth;    immunity;    antioxidant;    pathogens;    quails;   

DOI  :  10.1080/1828051X.2021.1886001

来源: DOAJ

【 摘 要 】

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

【 授权许可】

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