1Department of Animal Science, College of Abouraihan, University of Tehran, Tehran, Iran
2Department of Animal Health and Nutrition, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
Receive Date: 25 February 2012,
Revise Date: 13 May 2012,
Accept Date: 06 July 2012
This study investigated the effect of Rumex Sc (commercial product which includes of Saccharomyces cervisiae, saponin and essential oils) on rumen fermentation, blood glucose, urea, milk yield and milk composition. Animals were offered a basal diet containing alfalfa hay (15.5%), corn silage (24%), beet pulp (7%) and concentrate (53.5%). Additionally, Rumex Sc was included in the experimental diet at a rate of 5 g/day/cow. Sampling of milk, ruminal liquid and blood was conducted for determination of milk composition, fermentation parameters and blood metabolites. Milk yield was significantly increased for the experimental group when compared to the control group (P<0.05), but milk composition was not affected by Rumex Sc. The number of protozoa, ammonia nitrogen concentration and pH in the rumen were decreased in the experimental group (P<0.05). Concentrations of volatile fatty acids in the rumen were affected to some extent by inclusion of Rumex Sc in the diet. Molar proportion of acetate was decreased and propionate was increased with a corresponding decrease in acetate: propionate ratio. In this study, blood glucose was significantly increased and urea decreased with the addition of Rumex Sc (P<0.05). It was concluded that using Rumex Sc can improve the milk yield performance of dairy cows, however further studies are needed.
AOAC. (1990). Official Methods of Analysis. Vol. I. 15th Ed. Association of Official Analytical Chemists, Arlington, VA. Aramble M.J. and Kent B.A. (1990). Effect of yeast culture on nutrient digestibility and milk yield Response in early-to mid-lactation dairy cows. J. Dairy Sci. 73, 1560-1563. Benchaar C., Petit H.V., Berthiaume R., Oue-llet D.R., Chiquette J. and Chouinard G. (2007). Effects of essential oils on digestion, ruminal fermentation, rumen microbial populations, milk production and milk composition in Dairy cows fed alfalfa silage or corn silage. J. Am. Dairy Sci. 90, 886-897. Besong S., Jackson J.A., Hicks C.L. and Hemken R.W. (1996). Effects of a supplemental liquid yeast product on feed intake, ruminal profiles, and yield, composition, and organoleptic characteristics of milk from lactating Holstein cows. J. Dairy Sci. 79, 1654-1658. Ceriotti G. (1974). Other non-protein nitrogenous compounds. Pp 1122-1126 in Clinical Biochemistry: Principles and Methods. H.Ch Curtius and M. Roth Eds. Berlin: de Gruyter. Corona L., Mendoza G.D., Castrejen F.A., Crosby M.M. and Cobos M.A. (1999). Evaluation of two yeast cultures (Saccharomayces cervisia) on ruminal fermentation and digestion in sheep fed a corn stover diet. Small Rumin. Res. 31, 209-214. Dann H.M., Darckley J.K., Mc Coy G.C., Hutjens M.F. and Garrett J.E. (2000). Effects of yeast culture (Saccharomyces cervisiae) on prepartum intake and postpartum intake and milk production of jersey cows. J. Dairy Sci. 83, 123-127. Enjalbert F., Garrett J.E., Monocoulon R., Bayourthe C. and Chocoteau P. (1999). Effects of yeast culture (Saccharomyces cervisiae) on ruminal digestion in lactating dairy cows. J. Anim Feed Sci. Thechnol. 76, 195-206. Erasmus L.J., Botha P.M. and Kistner A. (1992). Effect of yeast culture supplement on production, rumen fermentation, and duodenal nitrogen flow in dairy cows. J. Dairy Sci. 75, 305-306. Goetsch A.L. and Owens F.N. (1982). Effects of sarsaponin on digestion and passage rates in cattle fed medium to low concentrate. J. Anim. Sci. 68, 2377-2384. Grieve D.G. (1979). Feed intake and growth of cattle fed liquid brewer’s yeast. Can. J. Anim. Sci. 59, 89-93. Haddad G. and Goussous S.N. (2005). Effect of yeast culture supplementation on nutrient intake, digestibility and growth performance of Awassi lambs. J. Anim. Feed Sci. Technol. 18, 343-348. Hristov A.N., McAllister T.A., Van Herk F.H., Cheng K.G., Newbold C.J. and Cheeke P.R. (1991). Effect of Yucca schidigera on ruminal fermentation and nutrient digestion in heifers. J. Anim. Sci. 77, 2554-2563. Janssen A.M., Chin N.L., Scheffer J.J.M. and Baerheim-Svendsen A. (1986). Screening for antimicrobial activity of some essential oil by the ager overley technique. Pharm Weekblad Sci. 8, 289-292. Jouany J.P. (1996). Effect of rumen protozoa on nitrogen utilization by ruminants. J. Nutr. 126, 1335-1346. Killeen G.F., Madigan C.A., Connolly C.R., Walsh G.A., Clark C., Hynes M.J., Timmins B.F., James P., Headon D.R. and Power R.F. (1998). Antimicrobial saponins of Yucca schidigera and the implications of their in vitro proprties for their in vitroimpact. J. Agric. Food Chem. 46, 3178-3186. Klita P.T., Mathison G.W., Fenton T.W. and Hardin R.T. (1996). Effects of alfalfa root saponins on digestive function in sheep. J. Anim. Sci. 74, 1144-1156. NRC. (2001). Nutrient Requirements of Dairy Cattle. 7th Ed. National Academy Press, Washington, DC, USA. Piva G., Belladonna S., Fusconi G. and Sicbaldi F. (1993). Effect of yeast on dairy cow performance, ruminal fermentation, blood components and milk manufacturing properties. J. Dairy Sci. 76, 2717-2722. Sullivan H.M. and Martin S.A. (1999). Effects of Saccharomyces cervisiae culture on in vitro mixed ruminal microorganism fermentation. J. Dairy Sci. 82, 2011-2016. Van Soest P.J. (1991). Nutritional Ecology of the Ruminant. Cornell University Press Ithaca NY. Wang Y., McAllister T.A., Newbold C.J., Rode L.M., Cheeke P.R. and Cheng K.J. (1998). Effect of Yucca schidigera extract on fermentation and degradation of steroidal saponins in the rumen simulation technique (RUSITEC). Anim. Feed Sci. Technol. 74, 143-153. Weidmeier R.D., Arambel M. and Waiters L. (1987). Effect of yeast culture and Aspirugillus oryzae, fermentation extract on ruminal characteristics and nutrient digestibility. J. Dairy Sci. 70, 2063-2068. Wilson R.C., Overton T.R. and Clark J.H. (1998). Effects of Yucca shidigeraextract and soluble protein on performance of cows and concentrations of urea nitrogen in plasma and milk. J. Anim. Sci. 81, 1022-1027.