Effect of zinc oxide nano particle and zinc oxide on performance and some blood parameters in male Markhoz goat kids

The aim of the present trial was to investigate the effects of zinc oxide (ZnO) and nano zinc oxid (nZnO) on performance and some blood parameters of Markhoz goat kids. A total of 30 male Markhoza goat kids aged 6-7 months (191.95 ± 6.40 days) in a completely randomized design were allocated into five treatments including zero, 20 and 40 ppm zinc from ZnO source and 20 and 40 ppm zinc from nZnO source and fed with a basal diet (containing 22.12 mg Zn/kgDM) for 70 days. Animals were weighed fortnightly and blood samples were taken at first day and days 35 and 70 for measurement of blood parameters. Dry matter intake and average daily gain in all treatments were not significant difference. Digestibility of dry matter and nutrients in the diet also were not affected by zinc supplementation. There was no significant difference between treatments for blood parameters (glucose, urea, albumin and total protein, alkaline phosphatase and lactate dehydrogenase enzymes and vitamin A levels). Zn supplementation did not affect plasma Zn concentration of the animals except on day 35. In conclusion, the results showed that the levels of 20 and 40 ppm zinc from ZnO and nZnO sources had no effect on performance and blood parameters of Markhoz goat kids fed a diet containing 22.12 ppm zinc.