EFFECT OF ADDING TWO LEVELS OF OIL CINNAMON (CINNAMOMUM ZEYLANICUM) AND GARLIC (ALLIUM SATIVUM) IN TOTAL GAS, METHANE, DRY MATTER AND ORGANIC MATTER IN VITRO DIGESTIBILITY

Experiment was performed to determine the effect addition two herbal plants oil. The treatments were: 1- control: (80:20) concentrate: roughage without additives, 2- control diet + cinnamon oil either 300 or 600 mg/kg DM, 3- control diet + garlic oil either 300 or 600 mg/kg DM. The results was showed decrease (p0.05) total gas for cinnamon compared to garlic oil by 30.66, 58.50 and respectively and decreases methane production was lower (p0.01) for cinnamon oil compared to garlic oil with 300 and 600 mg/kg DM have reached 6.00 and 14.66, 2.00 and 8.33 ml/200 mg DM after 24 h incubation respectively compared with control treatment. While, organic matter digestibility increased significantly (P0.05) reached to (69.16 and 72.71%) by cinnamon and garlic oil respectively, include the level 300mg. These results showed that essential oils such as garlic and cinnamon reduced the total methane gas emissions, net energy at the level of 300 and 600mg/kg DM and had no negative impact on the rumen environment.