Mona M. Khubeiz(1,2*) and Abdelfettah M. Shirif(2)
1- Environment Public Authority, Tripoli, Libya
2- Department of Physiology, Biochemistry and Nutrition, Faculty of Veterinary Medicine, University of Tripoli, Tripoli, Libya
Background: Modern intensive poultry production has achieved phenomenal improvement, to produce chicken with a high quality by the removal of antibiotic as growth promoters from poultry diets. Instead numerous additives such as Probiotics, prebiotics, organic acids, enzymes and phytogenic are extensively used in poultry feed.
Aim: This study was conducted to investigate the effect of different levels of coriander (Coriandrum sativum) seed powder, as a growth promoter on feed intake, live body weight, weight gain, feed conversion ratio, carcass yield and blood profile in broiler chickens.
Method: A total of 240 (Ross 308) one- day-old mixed sexes of broiler chicks were allocated randomly into four treatments of 60 chicks/group. Each treatment had three replicates (20 chicks/replicate) according to a completely randomized design (CRD) for 45 days. The chick were fed on diets containing 0% (T1) as control, 1.5% (T2), 2.5% (T3) and 3.5% (T4) of coriander seed powder. The feed intake, live body weight and weight gain were monitored and weekly bases measured. Blood samples were collected on 45th days of the trial for the determination the % of white blood cells and to assess blood profile.
Results: Revealed that the growth performance were not significantly affected (P>0.05). However, the dressing percentage without the skin was significantly increased (P<0.05) at the level of 1.5%, while the heart weight was significantly augmented (P<0.05) at 2.5% as compared to control. Furthermore, the serum triglyceride was significantly reduced (P<0.05) at 1.5%, while the HDL was significantly increased (P<0.001) at level 1.5% as compared with the control and 3.5% groups. Moreover, the GOT and GPT were significantly increased at 3.5% as compared with the control and 1.5% groups (P<0.01) and (P<0.05) respectively. The basophil and eosinophil cells count were significantly increased at 2.5% (P<0.05 and P<0.01) respectively, while the Lymphocyte cell was significantly increased at 1.5% (P<0.01). Nevertheless, the heterophil cell and H/L were significantly reduced at 1.5% (P<0.05).
Conclusion: Based on the results of this study indicated that the inclusion of coriander seed powder at 1.5% had positive impact on dressing percentage without skin, biochemical blood profile and immune response.Keywords: Blood parameter, Broiler chicken, Coriander, Performance.