Effect of in ovo - injection with Nano-Selenium on hatchability and post-hatch biological parameters in quail

Abstract

The selenium considered main element for animals and humans and inter in many biological functions that play important rule in maintenance metabolism in thyroid gland and cell growth and antioxidant, also considered of most important element to immune system by activation of the body immune system. The aim of the present study is investigating effects of nano-selenium in-ovo injection on some hatchability indicators, chick quality and its biological parameters for quail egg . One thousand and fifty fertile quail eggs from flock of department of Tikrit Agriculture Research randomly divided into five treatments (210 eggs each). First was normally without injection (negative control), second was injected with demineralized water (positive control) third, fourth and fifth treatments were injection by 10, 20 and 30 µg Nano-Selenium / egg respectively. The result show significantly improvement in hatchability percentage redaction in early and middle embryonic mortality percentage in addition to this significantly amelioration in hatched Chick quality for third treatment that in-ovo injection with (10 µg Nano-Selenium / egg). While showed fifth treatment in-ovo injection with (30 µg Nano-Selenium / egg) redaction in incubation duration accompany with significant increasing in hatched body weight. It is summarized that, in-ovo injection of different levels of nano-selenium can improve hatchability and chick quality