Ibrahim Hamza Yasser Al-Awadi (1) and Nihad Abdul-Lateef
Ali Al-Nadawi * (1)

(1). Department of Animal Production, College of Agriculture, Al-Qasim Green
University, Iraq.
(*Corrsponding author: Dr. Nihad Abdul-Lateef Ali Al-Nadawi. E-Mail:
adr.nihad@agre.uoqasim.edu.iq).

Received: 22/10/2020 Accepted: 15/11/2020

Abstract

This experiment was conducted at the poultry farm of the college of Agriculture, University of Al-Qasim Green for the period from 26/9/2019 to 8/11/2019. The study was aimed to the effect of adding different levels of Biotin to the diet in the productive performance of Japanese quail exposed to oxidative stress in the experiment, 300 unsexed Japanese quail birds were used. They were raised together until the age of 8 days and then were randomly distributed to 5 treatments with 3 replicates for each treatment (20 birds replicate). The oxidative stress was induced by adding 0.5% H2O2 to drinking water and the experimental treatments were as follows: The first treatment: Negative control treatment is free of any addition. The second treatment: a positive control treatment adding water with H2O2 at just by only 0.5%. The third, fourth and fifth treatment: adding biotin at a concentration of 500, 600 and 700 micrograms / kg feed + water with H2O2 added at a concentration of 0.5%, respectively. The treatment lasted from 8 to 42 days. The results are as follows: A significant improvement (p≤0.05) for the third, fourth and fifth treatments in the average live body weight in the sixth week and the total weight gain compared to the first treatment and the second treatment, As forthe total feed consumption, we notice the first treatment, the third, the fourth and the fifth treatments recorded significantly improvement (p≤0.05) compared to the second treatment, as well as the third, fourth and fifth treatments, Thebest cumulative feed conversion ratio and production index scale, with a significant difference (p≤0.05) compared to the first treatment and the second treatment.

Key words: Biotin, Productive performance, Japanese quail, Oxidative stress

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