Applications of nanoparticles of zinc oxide on productive performance of laying hens

Abstract

This study was conducted to determine the effects of supplementation of nanoparticles of zinc oxide in laying hen diets on laying performance, egg quality, nutrient digestibility, and zinc retention. A total of one hundred and twenty Bovans Brown laying hens (55-week-old) were assigned to four treatment diets including nanoparticles of zinc oxide at 0, 20, 40, or 60 mg/kg, respectively, for 12 weeks. Each treatment had six replicates with five hens each. The results revealed that feed conversion ratio was significantly improved (linear, P<0.01) with increasing levels of nanoparticles of zinc oxide in laying hens diet from 55-59, 59-63, 63-67 and 55-67 weeks of age. Hen day egg production, egg mass were significantly increased (P<0.05) by supplementation of nanoparticles of zinc oxide during the experimental periods. Moreover, Haugh unit, shell thickness and eggshell percentage were improved (P<0.01) with increasing levels of nanoparticles of zinc oxide. Digestibility of crude protein, ether extract and crude fiber linearly increased (P<0.001) with increasing levels of supplementation. Interestingly, the serum biochemical analyses revealed that serum cholesterol, glutamic oxaloacetic transaminase (GOT), glutamic pyruvic transaminase (GPT), urea and somewhat creatinine linearly decreased with increasing Nano-ZnO levels in the diets. In conclusion, inclusion of nanoparticles of zinc oxide at 20, 40, or 60 mg/kg had improved productive performance, Haugh unit, shell quality, nutrient digestibility, cholesterol, liver and kidney functions and can be used as an effective feed additive in laying hens diets.

Application of zinc oxide nanoparticles as feed additive in broiler chicken nutrition under hot environmental conditions

“…Dry matter and crud protein digestibility were significantly increased in layer treated with 20, 40 and 60 mg/kg compared to control group (Fawaz et al, 2019b). Rao et al (2016) indicated that male broiler consumed dietary added with 40 mg/kg Zn was significantly (P<0.05) improved nutrient digestibility of crude protein and ether extract under heat stress.…”

“…However, Fathi et al (2016) Observed that serum activities of ALT, AST was non-significant affect in broilers fed diet added with Nanoparticles of Zn Oxide at 10, 20 and 40 mg/kg. Dietary inclusion of Nanoparticles of Zn Oxide at 20, 40 and 60 mg/kg quadratically decrease (p<0.05) serum concentration of creatinine compared to control group (Fawaz et al, 2019b). However, Fathi et al (2016) indicated that serum concentration of Creatine kinase was non-significantly affected in broilers fed diet added with Nanoparticles of Zn Oxide at 10, 20 and 40 mg/kg.…”

“…Serum zinc concentration was significantly (P<0.01) increased in layer fed diet added with 80 mg/kg when compared to control diet (mao et al, 2017). Also, Idowu et al (2011) (Fawaz et al, 2019b). However, Fathi et al (2016) Observed that serum activities of ALT, AST was non-significant affect in broilers fed diet added with Nanoparticles of Zn Oxide at 10, 20 and 40 mg/kg.…”

“…Nanoparticle of zinc oxide at 80 ppm is the best source of zinc when compared to organic and inorganic sources of zinc make better performance and immunity of broilers (Bami et al, 2018). Supplementation of Nanoparticle of zinc oxide to layers diet at 20 to 60 mg/kg had been significantly improved nutrient digestibility and enhanced liver and kidney function (Fawaz et al, 2019b). This study aimed to give an overview on impact of zinc oxide as nanoparticles in broiler chickens diets under upper heat climate conditions, to explore the mode of action of zinc nanoparticles and its effect on broilers performance, nutrient digestibility, and some blood biochemistry.…”

Effects of Dietary Supplementation of Zinc Oxide Nanoparticles on Productive Performance, Physiological, Histological Changes and Tissues Zn Concentration in Broiler Chicks

“…In addition, several previous results in the literature con rmed thatZnO nanoparticles at 20 to 60 mg/kg of diet could be appropriate levels and a considerable source of Zn to enhance BWG and achieve a better FCR of broiler chickens [46][47][48][49][50][51][52][53][54] and this was matched with the present work and that 40 mg/kg Nano-ZnO is the optimal level in diets.…”