Asian-Australasian Journal of Animal Sciences

  • 제23권3호
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  • Pages.333-339
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  • 2010
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  • 1011-2367(pISSN)
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  • 1976-5517(eISSN)
아세아태평양축산학회 (Asian Australasian Association of Animal Production Societies)
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Modeling Nutrient Supply to Ruminants: Frost-damaged Wheat vs. Normal Wheat

  • Yu, Peiqiang (Department of Animal and Poultry Science, University of Saskatchewan) ;
  • Racz, V. (Feed Innovation Institute, University of Saskatchewan)
  • 투고 : 2008.01.03
  • 심사 : 2008.04.30
  • 발행 : 2010.03.01
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초록

The objectives of this study were to use the NRC-2001 model and DVE/OEB system to model potential nutrient supply to ruminants and to compare frost damaged (also called "frozen" wheat with normal wheat. Quantitative predictions were made in terms of: i) Truly absorbed rumen synthesized microbial protein in the small intestine; ii) Truly absorbed rumen undegraded feed protein in the small intestine; iii) Endogenous protein in the digestive tract; iv). Total truly absorbed protein in the small intestine; and v). Protein degraded balance. The overall yield losses of the frozen wheat were 24%. Results showed that using the DVE/OEB system to predict the potential nutrient supply, the frozen wheat had similar truly absorbed rumen synthesized microbial protein (65 vs. 66 g/kg DM; p>0.05), tended to have lower truly absorbed rumen undegraded feed protein (39 vs. 53 g/kg DM; p<0.10) and had higher endogenous protein (14 vs. 9 g/kg DM; p<0.05). Total truly absorbed protein in the small intestine was significantly lower (89 vs. 110 g/kg DM, p<0.05) in the frozen wheat. The protein degraded balance was similar and both were negative (-2 vs. -1 g/kg DM). Using the NRC-2001 model to predict the potential nutrient supply, the frozen wheat also had similar truly absorbed rumen synthesized microbial protein (average 56 g/kg DM; p>0.05), tended to have lower truly absorbed rumen undegraded feed protein (35 vs. 48, g/kg DM; p<0.10) and had similar endogenous protein (average 4 g/kg DM; p>0.05). Total truly absorbed protein in the small intestine was significantly lower (95 vs. 108 g/kg DM, p<0.05) in the frozen wheat. The protein degraded balance was not significantly different and both were negative (-16 vs. -19 g/kg DM). In conclusion, both models predict lower protein value and negative protein degraded balance in the frozen wheat. The frost damage to the wheat reduced nutrient content and availability and thus reduced nutrient supply to ruminants by around 12 to 19%.

키워드

참고문헌

  1. AOAC. 1990. Official Methods of Analysis (15th Ed.). Association of Official Analytical Chemists, Arlington, VA
  2. ARC. 1984. The Nutrient Requirement of Ruminant Livestock. Suppl. No. 1. Commonwealth Agricultural Bureaux, Slough, England, p. 45
  3. Canadian Council on Animal Care. 1993. Guide to the Care and Use of Experimental Animals. Vol. 1, 2nd Ed. CCAC, Ottawa, ON
  4. Cromey, M. G., D. S. C. Wright and H. J. Boddington. 1998. Effects of frost during grain filling on wheat yield and grain structure. New Zealand J. Crop Horticultural Sci. 26:279-290 https://doi.org/10.1080/01140671.1998.9514065
  5. Egan, A. R., K. Koda and K. Barady. 1985. Regulation of N metabolism and recycling. In: Control of digestion and metabolism in ruminants. Proc.6th International Symposium on Ruminant Physiology. Butterworths, Londdon, pp. 146-153
  6. Givens, D. I., P. Clark, D. Jacklin, A. R. Moss and C. R. Savery. 1993. Nutritional aspect of cereal, cereal grain by-products and cereal straw for ruminants. HGCA Research Review 24:1-180. Home-grown Cereal Authority, Hamlyn House, Highgate Hill, London, England
  7. INRA. 1978. Alimentation des ruminants. Inst. National de al Rech. Agron. Versailles, p. 597
  8. Licitra, G., T. M. Hernandez and P. J. Van Soest. 1996. Standardization of procedures for nitrogen fractionation of ruminant feeds. Anim. Feed Sci. Technol. 57:347-358 https://doi.org/10.1016/0377-8401(95)00837-3
  9. Madsen, J. 1985. The basis for the proposed Nordic protein evaluation system for ruminants. The AAT-PBV system. Acta. Agri. Scand. (Suppl.) 25:9-20
  10. NKJ-NJF. 1985. Introduction of the Nordic protein evaluation system for ruminants into practice and future research requirements. Proposals by the NKJ-NJF protein group. Acta Agric. Scand. 25(Suppl.):216-220 https://doi.org/10.1080/00015127509435041
  11. NRC. 1985. Ruminant nitrogen usage. National Academy Press. Washington DC. p. 138
  12. NRC. 2001. Nutrient requirement of dairy cattle (7th Ed). National Research Council, Washington, DC, National Academy Press
  13. Orskov, E. R. and I. McDonald. 1979. The estimation of protein degradability in the rumen from incubation measurements weighted according to the rate of passage. J. Agric. Sci. (Cambridge) 92:499-503 https://doi.org/10.1017/S0021859600063048
  14. SAS. 1999. User's Guide: Statistics (8th Ed), SAS Inst., Inc., Cary, NC
  15. Tamminga, S. And A. J. M. Jansman. 1993. In: Animal Nutrition (Ed. B. A. Williams). Wageningen Agricultural, University, The Netherlands
  16. Tamminga, S., W. M. Van Straalen, A. P. J. Subnel, R. G. M. Meijer, A. Steg, C. J. G. Wever and M. C. Block. 1994. The Dutch Protein Evaluation System: the DVE/OEB-system. Livest. Prod. Sci. 40:139-155 https://doi.org/10.1016/0301-6226(94)90043-4
  17. Van Soest, P. J., J. B. Robertson and B. A. Lewis. 1991. Symposium: Carbohydrate methodology, metabolism and nutritional implications in dairy cattle. Methods for dietary fiber, neutral detergent fiber and non-starch polysaccharides in relation to animal nutrition. J. Dairy Sci. 74:3583-3597 https://doi.org/10.3168/jds.S0022-0302(91)78551-2
  18. Varhegyi, J., J. Schmidt, E. Cenkvari and J. Varhegyi. 1998. Comparison of the new Hungarian protein evaluation system for ruminants with foreign systems. Allattenyesztes es Takarmanyozas. 47:239-246
  19. Verite, R. and Y. Geay. 1987. Evaluation and implementation of the PDI system in France. In: Feed valuation and protein requirement systems for ruminants (Ed. R. Jarrige and G. Aldeirman). pp. 249-261. ECSC-EEC-EAEC. Brussels
  20. Yu, P., A. R. Egan and B. J. Leury. 1999. Protein evaluation of dry roasted whole faba bean (Vicia faba) and lupin seeds (Lupinus albus) by the new Dutch protein evaluation system: the DVE/OEB system. Asian-Aust. J. Anim. Sci. 12:871-880
  21. Yu, P., D. A. Christensen and J. J. McKinnon. 2003a. Comparison of the National Research Council 2001. Model with the Dutch System (DVE/OEB) in the prediction of nutrient supply to dairy cows from forages. J. Dairy Sci. 86:2178-2192 https://doi.org/10.3168/jds.S0022-0302(03)73808-9
  22. Yu, P., J. A. Meier, D. A. Christensen, B. G. Rossnagel and J. J. McKinnon. 2003b. Using the NRC-2001 model and the DVE/OEB system to evaluate nutritive values of Harrington (malting-type) and Valier (feed-type) barley for ruminants. Anim. Feed Sci. Technol. 107:45-60 https://doi.org/10.1016/S0377-8401(03)00062-2
  23. Yu, P. 2005. Prediction of protein supply to ruminants from concentrates: comparison of the NRC-2001 model with the DVE/OEB system. J. Sci. Food Agric. 85:527-538 https://doi.org/10.1002/jsfa.2015
  24. Yu, P. and V. Racz. 2009. Chemical characterization, energy values, protein and carbohydrate fractions, degradation kinetics of frost damaged wheat (with severely overall weight loss) in ruminants. Anim. Sci. J. 80:140-148 https://doi.org/10.1111/j.1740-0929.2008.00606.x