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The Effect of Adding Different Levels of Β-Mannanase to The Broiler Rations in Some Productive and Physiological Traits | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 18, Issue 1, 2018, Pages 191-200 | ||
| Authors | ||
| Hisham Ahmed Al; | ||
| Abstract | ||
| The present study was carried out at Poultry Farm belong to Animal Production Department, College of Agriculture, University of Baghdad, during the period from 19/9/2015 to 24/10/2015.to determine the effect of adding different levels of β-Mannanase (0.00, 0.025, 0.050, and 0.075 %) to the diet on productive and some physiological traits of broiler chicken. 240 broiler chicks Ross 308 were used in this study and distributed randomly to four treatments (60 chicks each treatment, 3 replicated in each treatment). Treatments were: T1 (control) without adding enzyme, the second T2, third T3 and fourth T4 adding β-Mannanase at levels (0.00, 0.025, 0.050, and 0.075%) respectively. Results showed significant increase (p≤0.05) in live body weight and accumulative weight gain during (1-35 day) for treatment 3 compared with treatment 1: Significant difference in feed intake and feed conversion between treatments, in spite of calculated improve for feed conversion in third treatment. The result also showed significant improved in dressing percentage for Treatment 3. No significant difference between treatments in concentrations of glucose, H/L ratio and PCV. Also showed significant decrease cholesterol level in treatment 3 and 4, while total protein level increased significantly in both treatments 3 and 4 . | ||
| Keywords | ||
| Mannanase; enzyme; broiler | ||
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