References
- Ao , T. , Cantor , A. H. , Pescatore , A. J. and Pierce , J. L. 2008 . In vitro evaluation of feed-grade enzyme activity at pH levels simulating various parts of the avian digestive tract. . Anim. Feed Sci. Technol. , 140 : 462 – 468 .
- AOAC . 1997 . Official Methods of Analysis, , 16th ed. Assoc. Offic. Anal. Chem. Arlington, VA, USA
- Beauchemin , K. A. , Rode , L. M. , Maekawa , M. , Morgavi , D. P. and Kampen , R. 2000 . Evaluation of a nonstarch polysaccharidase feed enzyme in dairy cows diets. . J. Dairy Sci. , 83 : 543 – 553 .
- Cobos , M. A. , García , L. E. , González , S. S. , Bárcena , J. R. , Hernández , D. S. and Sato , M. 2002 . The effect of shrimp shell waste on Ruminal bacteria and performance of lambs. . Anim. Feed Sci. Technol. , 95 : 179 – 187 .
- Colombatto , D. , Mould , F. L. , Bhat , M. K. and Owen , E. 2007 . Influence of exogenous fibrolytic enzyme level and incubation pH on the in vitro Ruminal fermentation of alfalfa stems, Anim. . Feed Sci. Technol. , 137 : 150 – 162 .
- Erwin , E. S. , Marco , G. J. and Emery , E. 1961 . Volatile fatty acids analysis of blood and rumen fluid by chromatography. . J. Dairy Sci. , 44 : 1768 – 1771 .
- Fuentes , M. C. , Calsamiglia , S. , Cardozo , P. W. and Vlaeminck , B. 2009 . Effect of pH and level of concentrate in the diet on the production of biohydrogenation intermediates in a dual-flow continuous culture. . J. Dairy Sci. , 92 : 4456 – 4466 .
- Giraldo , L. A. , Ranilla , M. J. , Tejido , M. L. and Carro , M. D. 2007 . Influence of exogenous fibrolytic enzymes and fumarate on methane production, microbial growth and fermentation in Rusitec fermenters. . Brit. J. Nutr. , 98 : 753 – 761 .
- Giraldo , L. A. , Tejido , M. L. , Ranilla , M. J. , Ramos , S. and Carro , M. D. 2008 . Influence of direct-fed fibrolytic enzymes on diet digestibility and Ruminal activity in sheep fed a grass hay based diet. . J. Anim. Sci. , 86 : 1617 – 1623 .
- Harrigan , W. F. and Mccance , E. M. 1976 . Laboratory Methods in Food and Dairy Microbiology Academic Press, London
- Krause , M. , Beauchemin , K. A. , Rode , L. M. , Farr , B. I. and Norgaard , P. 1998 . Fibrolytic enzyme treatment of barley grain and source of forage in high-grain diets fed to growing cattle. . J. Anim. Sci. , 76 : 2912 – 2920 .
- Krueger , N. A. , Adesogan , A. T. , Staples , C. R. , Krueger , W. K. , Kim , S. C. , Littell , R. C. and Sollenberger , L. E. 2008 . Effect of method of applying fibrolytic enzymes or ammonia to Bermudagrass hay on feed intake, digestion, and growth of beef steers. . J. Anim. Sci. , 86 : 882 – 889 .
- Littell , R. C , Henry , P. R. and Ammerman , C. B. 1998 . Statistical analysis of repeated measures data using SAS procedures. . J. Anim. Sci. , 76 : 1216 – 1231 .
- Mccullough , H. 1967 . The determination of ammonia in whole blood by a direct colorimetric method. . Clin. Chem. Acta , 17 : 297 – 304 .
- Ørskov , E. R. and Mcdonald , I. 1979 . The estimation of protein degradability in the rumen from incubation measurements weighted according to rate of passage. . J. Agric. Sci. , 92 : 499 – 503 .
- Pinos-rodríguez , J. M. , Moreno , R. , González , S. S. , Robinson , P. H. , Mendoza , G. and Álvarez , G. 2008 . Effects of exogenous fibrolytic enzymes on Ruminal fermentation and digestibility of total mixed rations fed to lambs. . Anim. Feed Sci. Technol , 142 : 210 – 219 .
- Ranilla , M. J. , Tejido , M. L. , Giraldo , L. A. , Tricárico , J. M. and Carro , M. D. 2008 . Effects of an exogenous fibrolytic enzyme preparation on in vitro Ruminal fermentation of three forages and their isolated cell walls. . Anim. Feed Sci. Technol , 145 : 109 – 121 .
- SAS . 1999 . User s Guide : Statistics . [CD-ROM Computer file]. Version 8. SAS Institute, Inc., Cary N.C
- Van soest , P. J. , Robertson , J. B. and Lewis , B. A. 1991 . Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition. . J. Dairy. Sci. , 74 : 3583 – 3597 .
- Vanzant , E. S , Cochran , R. C. and Titgemeyer , E. C. 1998 . Standardization of in situ techniques for ruminant feedstuff evaluation. . J. Anim. Sci. , 76 : 2717 – 2729 .
- Yang , W. Z , Beauchemin , K. A. and Rode , L. M. 2000 . A comparison of methods of adding fibrolytic enzymes to lactating cow diets. . J. Dairy Sci. , 83 : 2512 – 2520 .