Effects of levels of crude protein and ground corn cobs in total mixed ration on intake, rumen fermentation and milk production in crossbred Holstein Friesian lactating dairy cows

References

• AOAC (Association of Official Analytical Chemists). 1997. Official methods of analysis. 16th ed. Arlington (VA): AOAC International.
   Google Scholar
• Argüello A. 2011. Trends in goat research, a review. J Appl Anim Res. 39:429–434. doi:10.1080/09712119.2011.637362
   Web of Science ®Google Scholar
• Argüello A, Castro N, Capote J. 2003. Growth of milk replacer kids fed under three different managements. J Appl Anim Res. 25:37–40.
   Google Scholar
• Avila-Segura M, Barak P, Hedtcke JL, Posner JL. 2011. Nutrient and alkalinity removal by corn grain, stover and cob harvest in Upper Midwest USA. Biomass Bioenergy. 35:1190–1195. doi:10.1016/j.biombioe.2010.12.010
   Web of Science ®Google Scholar
• Broderick GA. 2003. Effects of varying dietary protein and energy levels on the production of lactating dairy cows. J Dairy Sci. 86:1370–1381. doi:10.3168/jds.S0022-0302(03)73721-7
   PubMed Web of Science ®Google Scholar
• Broderick GA, Reynal SM. 2009. Effect of source of rumen-degraded protein on production and ruminal metabolism in lactating dairy cows. J Dairy Sci. 92:2822–2834. doi:10.3168/jds.2008-1865
   PubMed Web of Science ®Google Scholar
• Calabrò S, Moniello G, Piccolo C, Bovera F, Infascelli F, Tudisco R, Cutrignelli MI. 2008. Rumen fermentation and degradability in buffalo and cattle using the in vitro gas production technique. J Anim Physiol Anim Nutr. 92:356–362. doi:10.1111/j.1439-0396.2007.00799.x
   PubMed Web of Science ®Google Scholar
• Castro N, Capote J, Bruckmaier RM, Argüello A. 2011. Management effects on colostrogenesis in small ruminants: a review. J Appl Anim Res. 39:85–93. doi:10.1080/09712119.2011.581625
   Web of Science ®Google Scholar
• Cherdthong A, Wanapat M, Wachirapakorn C. 2011a. Influence of urea calcium mixture supplementation on ruminal fermentation characteristics of beef cattle fed on concentrates containing high levels of cassava chips and rice straw. Anim Feed Sci Technol. 163:43–51. doi:10.1016/j.anifeedsci.2010.10.003
   Web of Science ®Google Scholar
• Cherdthong A, Wanapat M, Wachirapakorn C. 2011b. Effects of urea-calcium mixture in concentrate containing high cassava chip on feed intake, rumen fermentation and performance of lactating dairy cows fed on rice straw. Livest Sci. 136:76–84. doi:10.1016/j.livsci.2010.08.002
   Web of Science ®Google Scholar
• Crocker CL. 1967. Rapid determination of urea nitrogen in serum or plasma without deproteinization. Am J Med Technol. 33:361–365.
   PubMedGoogle Scholar
• Emery RS, Brown LD, Thomas JW. 1964. Comparison of corn cobs and hay in ground, restricted-roughage rations affecting milk composition. J Dairy Sci. 47:1322–1324. doi:10.3168/jds.S0022-0302(64)88912-8
   Google Scholar
• Hristov AN, Etter RP, Ropp JK, Grandeen KL. 2004. Effect of dietary crude protein level and degradability on ruminal fermentation and nitrogen utilization in lactating dairy cows. J Dairy Sci. 82:3219–3229.
   Web of Science ®Google Scholar
• Hwangbo S, Choi SH, Kim SW, Son DS, Park HS, Lee SH, Jo IH. 2009. Effects of crude protein levels in total mixed rations on growth performance and meat quality in growing Korean black goats. Asian Australas J Anim Sci. 8:1133–1139.
   Google Scholar
• Kearl LC. 1982. Nutrient requirements of ruminants in developing countries. Logan: International Feedstuffs Institute, Utah State University, Utah, USA.
   Google Scholar
• Leonardi C, Stevenson M, Armentano LE. 2003. Effect of two levels of crude protein and methionine supplementation on performance of dairy cows. J Dairy Sci. 86:934–943. doi:10.3168/jds.S0022-0302(03)73676-5
   PubMed Web of Science ®Google Scholar
• Lobley GE, Connell A, Lomax MA, Brown DS, Milne E, Calder AG, Farningham DAH. 1995. Hepatic detoxification of ammonia in the ovine liver: possible consequences for amino acid catabolism. Br J Nutr. 73:667–685. doi:10.1079/BJN19950072
   PubMed Web of Science ®Google Scholar
• NRC. 2003. Air emissions from animal feeding operations: current knowledge, future needs. Washington (DC): National Academy of Sciences.
   Google Scholar
• Orskov ER. 1994. Recent advances in understanding of microbial transformation in ruminants. Livestock Prod Sci. 39:53–60. doi:10.1016/0301-6226(94)90153-8
   Google Scholar
• Orskov ER. 1999. Supplement strategies for ruminants and management of feeding to maximize utilization of roughages. Prev Vet Med. 38:179–185. doi:10.1016/S0167-5877(98)00123-8
   PubMed Web of Science ®Google Scholar
• SAS 1998. User's guide: statistic. Version 6. 12th ed. Cary (NC): SAS Institute.
   Google Scholar
• Satter LD, Slyter LL. 1974. Effect of ammonia concentration on ruminal microbial protein production in vitro. Br J Nutr. 32:199–208. doi:10.1079/BJN19740073
   PubMed Web of Science ®Google Scholar
• Steel RGD, Torrie JH. 1980. Principles and procedures of statistics. New York (NY): McGraw Hill Book.
   Google Scholar
• Tamminga S. 1992. Nutrition management of dairy cows as a contribution to pollution control. J Dairy Sci. 75:345–357. doi:10.3168/jds.S0022-0302(92)77770-4
   Web of Science ®Google Scholar
• Van Eylen D, Van Dongen F, Kabel M, de Bont J. 2011. Corn fiber, cobs and stover: enzyme-aided saccharification and co-fermentation after dilute acid pretreatment. Bioresour Technol. 102:5995–6004. doi:10.1016/j.biortech.2011.02.049
   PubMed Web of Science ®Google Scholar
• Van Keulen J, Young BA. 1977. Evaluation of acid-insoluble ash as a natural marker in ruminant digestibility studies. J Anim Sci. 44:282–287.
   Web of Science ®Google Scholar
• Van Soest PJ, Robertson JB, Lewis BA. 1991. Methods for dietary fiber neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition. J Dairy Sci. 74:3583–3597. doi:10.3168/jds.S0022-0302(91)78551-2
   PubMed Web of Science ®Google Scholar
• Wanapat M, Cherdthong A. 2009. Use of real-time PCR technique in studying rumen cellulolytic bacteria population as affected by level of roughage in swamp buffalo. Curr Microbiol. 58:294–299. doi:10.1007/s00284-008-9322-6
   PubMed Web of Science ®Google Scholar
• Wanapat M, Cherdthong A, Pakdee P, Wanapat S. 2008. Manipulation of rumen ecology by dietary lemongrass (Cymbopogon citratus Stapf.) powder supplementation. J Anim Sci. 86:3497–3503. doi:10.2527/jas.2008-0885
   PubMed Web of Science ®Google Scholar
• Wanapat M, Pilajun R, Kongmun P. 2009a. Ruminal ecology of swamp buffalo as influenced by dietary sources. Anim Feed Sci Technol. 151:205–214. doi:10.1016/j.anifeedsci.2009.01.017
   Web of Science ®Google Scholar
• Wanapat M, Pimpa O. 1999. Effect of ruminal NH3-N levels on ruminal fermentation, purine derivatives, digestibility and rice straw intake in swamp buffaloes. Asian Australas J Anim Sci. 12:904–907.
   Web of Science ®Google Scholar
• Wanapat M, Polyorach S, Boonnop K, Mapato C, Cherdthong A. 2009b. Effects of treating rice straw with urea or urea and calcium hydroxide upon intake, digestibility, rumen fermentation and milk yield of dairy cows. Livest Sci. 125:238–243. doi:10.1016/j.livsci.2009.05.001
   Web of Science ®Google Scholar