References
- Adams R.P. (2007). Identification of essential oil components by gas chromatography/mass spectroscopy. Illinois, USA, Allured Publishing Corporation, 804 pp.
- AOAC (2000). Official Methods of Analysis. 17th ed. Arlington, USA, Association of Official Analytical Chemists, 2200 pp.
- Benchaar C., Greathead H. (2011). Essential oils and opportunities to mitigate enteric methane emissions from ruminants. Anim. Feed Sci. Technol., 166-167: 338-355.
- Benchaar C., Petit H.V., Berthiaume R., Whyte T.D., Chouinard P.Y. (2006). Effects of addition of essential oils and monensin premix on digestion, ruminal fermentation, milk production, and milk composition in dairy cows. J. Dairy Sci., 89: 4352-4364.
- Benchaar C., Calsamiglia S., Chaves A.V., Fraser G.R., Colombatto D., Mc Al- lister T.A., Beauchemin K.A. (2008 a). Areview of plant-derived essential oils in ruminant nutrition and production. Anim. Feed Sci. Technol., 145: 209-228.
- Benchaar C., Chaves A.V., Fraser G.R., Wang Y., Beauchemin K.A., Mc Allis- ter T.A. (2008 b). Effects of essential oils and their components on in vitro rumen microbial fermentation. Can. J. Anim. Sci., 88: 341-341.
- Blümmel M., Makkar H.P.S., Becker K. (1997 a). In vitro gas production:atechnique revisited. J. Anim. Physiol. Anim. Nutr., 77: 24-34.
- Blümmel M., Steingab H., Becker K. (1997 b). The relationship between in vitro gas production, in vitro microbial biomass yield and N-15 incorporation and its implications for the prediction of voluntary feed intake of roughages. Br. J. Nutr., 77: 911-921.
- Bodas R., Lopez S., Fernandez M., Garcia-Gonzalez R., Rodriguez A.B., Wal- lace R.J., Gonzalez J.S. (2008). In vitro screening of the potential of numerous plant species as antimethanogenic feed additives for ruminants. Anim. Feed Sci. Technol., 145: 245-258.
- Bodas R., Prieto N., García- González R., Andrés S., Giráldez F.J., López S. (2012). Manipulation of rumen fermentation and methane production with plant secondary metabolites. Anim. Feed Sci. Technol., 176: 78-93.
- Broderick G.A., Kang J.H. (1980). Automated simultaneous determination of ammonia and total amino acids in ruminal fluid and in vitro media. J. Dairy Sci., 63: 64-75.10.3168/jds.S0022-0302(80)82888-8
- Broudiscou L.P., Papon Y., Broudiscou A.F. (2000). Effects of dry plant extracts on fermentation and methanogenesis in continuous culture of rumen microbes. Anim. Feed Sci. Technol., 87: 263-277.
- Broudiscou L.P., Papon Y., Broudiscou A.F. (2002). Effects of dry plant extracts on feed degradation and the production of rumen microbial biomass inadual outflow fermenter. Anim. Feed Sci. Technol., 101: 183-189.
- Burt S. (2004). Essential oils: their antibacterial properties and potential applications in foods - a review. Int. J. Food Microbiol., 94: 223-253.10.1016/j.ijfoodmicro.2004.03.022
- Busquet M., Calsamiglia S., Ferret A., Kamel C. (2006). Plant extracts affect in vitro rumen microbial fermentation. J. Dairy Sci., 89: 761-771.
- Calsamiglia S., Busquet M., Cardozo P.W., Castillejos L., Ferret A. (2007 a). Essential oils as modifiers of rumen microbial fermentation. J. Dairy Sci., 90: 2580-2595.10.3168/jds.2006-644
- Calsamiglia S., Busquet M., Cardozo P.W., Castillejos L., Ferret A. (2007 b). Invited review: Essential oils as modifiers of rumen microbial fermentation. J. Dairy Sci., 90: 2580-2595.10.3168/jds.2006-644
- Cardozo P.W., Calsamiglia S., Ferret A., Kamel C. (2004). Effects of natural plant extracts on ruminal protein degradation and fermentation profiles in continuous culture. J. Anim. Sci., 82: 3230-3236.10.2527/2004.82113230x
- Castillejos L., Calsamiglia S., Martín- Tereso J., Ter Wijlen H. (2008). In vitro evaluation of effects of ten essential oils at three doses on ruminal fermentation of high concentrate feedlot-type diets. Anim. Feed Sci. Technol., 145: 259-270.
- Chaves A.V., He M.L., Yang W.Z., Hristov A.N., Mc Allister T.A., Benchaar C. (2008). Effects of essential oils on proteolytic, deaminative and methanogenic activities of mixed ruminal bacteria. Can. J. Anim. Sci., 88: 117-122.
- Cobellis G., Trabalza -Marinucci M., Yu Z. (2016). Critical evaluation of essential oils as rumen modifiers in ruminant nutrition: Areview. Sci. Total Environ., 545-546: 556-568.
- Cox S.D., Mann C.M., Markham J.L. (2001). Interactions between components of the essential oil of Melaleuca alternifolia. J. Appl. Microbiol., 91: 492-497.10.1046/j.1365-2672.2001.01406.x
- Dorman H.J.D., Deans S.G. (2000). Antimicrobial agents from plants: antibacterial activity of plant volatile oils. J. Appl. Microbiol., 88: 308-316.10.1046/j.1365-2672.2000.00969.x
- Fievez V., Babayemi O.J., Demeyer D. (2005). Estimation of direct and indirect gas production in syringes: Atool to estimate short chain fatty acid production that requires minimal laboratory facilities. Anim. Feed Sci. Technol., 124: 197-210.
- France J., Dhanoa M.S., Theodorou M.K., Lister S.J., Davies D.R., Isac D. (1993). Amodel to interpret gas accumulation profiles associated with in vitro degradation of ruminant feeds. J. Theor. Biol., 163: 99-111.
- Goel G., Makkar H.P.S., Becker K. (2008). Changes in microbial community structure, methanogenesis and rumen fermentation in response to saponin-rich fractions from different plant materials. J. Appl. Microbiol., 105: 770-777.
- Gunal M., Ishlak A., Abughazaleh A.A. (2013). Evaluating the effects of six essential oils on fermentation and biohydrogenation in in vitro rumen batch cultures. Czech J. Anim. Sci., 58: 243-252.
- Hart K.J., Yanez- Ruiz D.R., Duval S.M., Mc Ewan N.R., Newbold C.J. (2008). Plant extracts to manipulate rumen fermentation. Anim. Feed Sci. Technol., 147: 8-35.
- Jouany J.P., Morgavi D.P. (2007). Use of'natural'products as alternatives to antibiotic feed additives in ruminant production. Animal, 1: 1443-1466.
- Kamra D.N., Patra A.K., Chatterjee P.N., Kumar R., Agarwal N., Chaudhary L.C. (2008). Effect of plant extracts on methanogenesis and microbial profile of the rumen of buffalo: a brief overview. Aust. J. Exp. Agr., 48: 175-178.10.1071/EA07268
- Khiaosa- Ard R., Zebeli Q. (2013). Meta-analysis of the effects of essential oils and their bioactive compounds on rumen fermentation characteristics and feed efficiency in ruminants. J. Anim. Sci., 91: 1819-1830.10.2527/jas.2012-5691
- Macheboeuf D., Morgavi D.P., Papon Y., Mousset J.L., Arturo-Schaan M. (2008). Dose-response effects of essential oils on in vitro fermentation activity of the rumen microbial population. Anim. Feed Sci. Technol., 145: 335-350.
- Makkar H.P.S. (2005). In vitro gas methods for evaluation of feeds containing phytochemicals. Anim. Feed Sci. Technol., 123-124, Part 1: 291-302.
- Makkar H.P.S., Blümmel M., Becker K. (1995). Formation of complexes between polyvinyl pyrrolidones or polyethylene glycols and tannins, and their implication in gas production and true digestibility in in vitro techniques. Br. J. Nutr., 73: 897-913.
- Malecky M., Broudiscou L.P. (2009). Disappearance of nine monoterpenes exposed in vitro to the rumen microflora of dairy goats: Effects of inoculum source, redox potential, and vancomycin. J. Anim. Sci., 87: 1366-1373.
- Malecky M., Broudiscou L.P., Schmidely P. (2009 a). Effects of two levels of monoterpene blend on rumen fermentation, terpene and nutrient flows in the duodenum and milk production in dairy goats. Anim. Feed Sci. Technol., 154: 24-35.
- Malecky M., Fedele V., Broudiscou L.P. (2009 b). In vitro degradation by mixed rumen bacteria of 17 mono- and sesquiterpenes typical of winter and spring diets of goats on Basilitica rangelands (southern Italy). J. Sci. Food Agric., 89: 531-536.
- Malecky M., Albarello H., Broudiscou L.P. (2012). Degradation of terpenes and terpenoids from Mediterranean rangelands by mixed rumen bacteria in vitro. Animal, 6: 612-616.10.1017/S1751731111001947
- Mc Intosh F.M., Williams P., Losa R., Wallace R.J., Beever D.A., Newbold C.J. (2003). Effects of essential oils on ruminal microorganisms and their protein metabolism. Appl. Environ. Microbiol., 69: 5011-5014.
- Menke K.H., Steingass H. (1988). Estimation of the energetic feed value obtained from chemical analysis and in vitro gas production using rumen fluid. Anim. Res. Dev., 28: 7-55.
- Nadim M.M., Malik A.A., Ahmad J., Bakshi S.K. (2011). The essential oil composition of Achillea millefolium L. cultivated under tropical condition in India. World J. Agric. Sci., 7: 561-565.
- Newbold C.J.,el Hassan S.M., Wang J., Ortega M.E., Wallace R.J. (1997). Influence of foliage from African multipurpose trees on activity of rumen protozoa and bacteria. Br. J. Nutr., 78: 237-249.10.1079/BJN19970143
- Newbold C.J., Mc Intosh F.M., Williams P., Losa R., Wallace R.J. (2004). Effects of a specific blend of essential oil compounds on rumen fermentation. Anim. Feed Sci. Technol., 114: 105-112.
- Nolan J.V., Dobos R.C., (2005). Nitrogen transactions in ruminants. In: Quantitative aspects of ruminant digestion and metabolism, Dijkstra J., Forbes J.M., France J. (eds). Walingford, UK, CABI Publishing, pp. 177-206.
- Oh H.K., Sakai T., Jones M.B., Longhurst W.M. (1967). Effect of various essential oils isolated from Douglas fir needles upon sheep and deer rumen microbial activity. Appl. Microbiol., 15: 777-784.
- Ottenstein D.M., Bartley D.A. (1971). Separation of free acids C2-C5 in diluted aqueous solution column technology. J. Chromatogr. Sci., 9: 673-681.10.1093/chromsci/9.11.673
- Patra A.K., Saxena J. (2009). Dietary phytochemicals as rumen modifiers:areview of the effects on microbial populations. A. Van Leeuw., 96: 363-375.
- Patra A.K., Saxena J. (2010). Anew perspective on the use of plant secondary metabolites to inhibit methanogenesis in the rumen. Phytochemistry, 71: 1198-1222.
- Russell J.B., Wallace R.J., (1997). Energy-yielding and energy-consuming reactions. In: The rumen microbial ecosystem, Hobson P.N., Stewart C.S. (eds). London, UK, Chapman & Hall, pp. 246-282.
- Russo A., Formisano C., Rigano D., Senatore F., Delfine S., Cardile V., Rossel - li S., Bruno M. (2013). Chemical composition and anticancer activity of essential oils of Mediterranean sage (Salvia officinalis L.) grown in different environmental conditions. Food Chem. Toxicol., 55: 42-47.10.1016/j.fct.2012.12.036
- Sallam S.M., Abdelgaleil S.A., Bueno I.C., Nasser M.E., Araujo R.C., Abdalla A.L. (2011). Effect of some essential oils on in vitro methane emission. Arch. Anim. Nutr., 65: 203-214.10.1080/1745039X.2011.568275
- Wallace R.J., Mc Ewan N.R., Mc Intosh F.M., Teferedegne B., Newbold C.J. (2002). Natural products as manipulators of rumen fermentation. Asian. Australas. J. Anim., 15: 1458-1468.