Anise and grape seed oils as a feed additive to improve the performance, immune response, and antioxidant activity and reduce caecal pathogenic microbes of quail

This trial was performed to determine the effect of anise (Ans) and grape seed (Grp) oil inclusion in diets of Japanese quail on performance, carcasses, blood parameters, antioxidant activity, and hematological blood structure. The 35 d feeding trial was conducted on two hundred 7 d old Japanese quails, allocated to four treatment groups with five replicates each. Ans and Grp were examined at different inclusion levels: 0 % (control), Ans 0.5 %, Grp 0.5 %, and Ans 0.25 % + Grp 0.25 %, in a completely randomized design. The results showed that at the end of the trial (42 d), the oil supplementation had positive effects (P