Ali Abbas Ahmed Al-Arami*
*Faculty of Agricultural and Veterinary Medicine – Dhamar University – Yemen
Abstract:
This experiment was used in the experiments unit of the College of Agriculture and Veterinary Medicine – Dhamar University to use the addition of yeast to broiler diets, 135 chicks of one-day-old sexed Ross strain, and a random treatment using the complete random design, and each treatment contained three replicates of 15 chicks for each replicae , where T1 was the control treatment and the treatments T2, T3 with the addition of yeast at 0.5%, 1% respectively. The experimental birds were given free feed and water and the live weight, consumed feed and feed conversion factor were measured While there were no significant differences between the control and the first treatment. The results of the experiment showed that the live weight (gm) was significantly (P ≥ 0.05) higher in the treatment fed on diets containing 0.5% yeast than in the control treatment, while there were no significant differences between the control treatment and the treatment fed on diets containing 1% yeast. The feed consumed (gm) did not show any significant differences (P ≥ 0.05) between the treatments, but the control treatment had more feed consumption than the treatments to which yeast was added, and this was reflected in the feed conversion efficiency (gm for feed/gm of meat), which was significantly better (gm). P ≥ 0.05) for chickens fed on diets containing 1% yeast than the rest of the treatments, which amounted to 1.79 gm feed / g meat: It is concluded from the study that the addition of dry yeast to the diets of the broiler houses led to an improvement in the production performance compared to the control, especially at the level of 0.5% dry yeast without harmful effects on the chicks.
Key words: production performance, yeast, live weight, broilers
Full paper in arabic: pdf