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              Open Access  
Copyright: The authors. This article is an open access 
article licensed under the terms of the Creative Commons Attribution License 
 
 
(http://creativecommons.org/licenses/by/2.0) which permits unrestricted use, 
distribution and reproduction in any medium, provided the work is properly 
cited. 
 
              
              
              Research 
              
              
(Published online:  
              
              21-02-2015) 
              
              13.
              
              Rumen modulatory effect of thyme, clove and 
              peppermint oils in vitro using buffalo rumen liquor 
              - Debashis 
              Roy, S. K. Tomar and Vinod Kumar 
              
              Veterinary World, 8(2): 203-207   
              
   
                
                
doi: 
              10.14202/vetworld.2015.203-207   
              Debashis Roy: 
              Department of Animal Nutrition, College of Veterinary Science and 
              Animal Husbandry, Uttar Pradesh Pandit Deen Dayal Upadhyaya Pashu 
              Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan Sansthan (DUVASU), 
              Mathura, Uttar Pradesh, India;
              
              
              debashis2k4@gmail.com S. K. 
              Tomar: 
              
              Dairy Cattle Nutrition Division, National Dairy Research 
              Institute, Karnal, India;
              
              
              santoshktomar@gmail.com Vinod 
              Kumar: Department of Animal Nutrition, College of Veterinary 
              Science and Animal Husbandry, Uttar Pradesh Pandit Deen Dayal 
              Upadhyaya Pashu Chikitsa Vigyan Vishwavidyalaya Evam Go Anusandhan 
              Sansthan (DUVASU), Mathura, Uttar Pradesh, 
              India;
              
              vinodsidhu@rediffmail.com   Received: 
              15-09-2014, Revised: 02-01-2015, Accepted: 09-01-2015, Published 
              online: 21-02-2015   
              
              
              Corresponding author:Debashis Roy , e-mail: debashis2k4@gmail.com 
 
              Citation:
              Roy D, Tomar 
              SK, Kumar V (2015) Rumen modulatory effect of thyme, clove and 
              peppermint oils in vitro using buffalo rumen liquor, 
              Veterinary World 8(2):203-207. 
 
              Abstract 
 Aim:
              The present study was conducted to examine the rumen 
              modulatory effect of thyme, clove and peppermint oils on rumen 
              fermentation pattern in vitro using roughage based diet. 
              Materials and Methods: Thyme, clove and peppermint oils were 
              tested at concentration of 0, 30, 300 and 600 mg/l (ppm) of total 
              culture fluid using in vitro gas production technique in 
              wheat straw based diet (concentrate: Wheat straw 50:50). Different
              in vitro parameters e.g., total gas production, methane 
              production, nutrient degradability, volatile fatty acid (VFA) 
              production and ammonia nitrogen concentration were studied using 
              buffalo rumen liquor.  
              Results: Thyme oil at higher dose level (600 
              ppm) reduced (p<0.05) total gas production, feed degradability and 
              ammonia nitrogen (NH3-N) concentration 
              whereas total VFA concentration was significantly lower (p>0.05) 
              in 300 and 600 ppm dose levels. 600 ppm dose level of clove oil 
              reduced (p<0.05) total gas production, feed degradability, total 
              VFA and acetate to propionate ratio. Methane production was 
              significantly reduced (p<0.05) in 300 and 600 ppm dose levels of 
              clove and peppermint oil. 
              Conclusion: Right combination of these essential oils may 
              prove to enhance performance of animals by reducing methane 
              production and inhibiting protein degradation in rumen. 
              Keywords: ammonia nitrogen, essential oil, 
              rumen fermentation, methane, wheat straw. 
 
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