Effects of Post-harvest Storage Duration and Variety on Nutrient Digestibility and Energy Content Wheat in Finishing Pigs

  • Guo, P.P. (State Key Laboratory of Animal Nutrition, China Agricultural University) ;
  • Li, P.L. (State Key Laboratory of Animal Nutrition, China Agricultural University) ;
  • Li, Z.C. (State Key Laboratory of Animal Nutrition, China Agricultural University) ;
  • Stein, H.H. (Department of Animal Sciences, University of Illinois) ;
  • Liu, L. (State Key Laboratory of Animal Nutrition, China Agricultural University) ;
  • Xia, T. (State Key Laboratory of Animal Nutrition, China Agricultural University) ;
  • Yang, Y.Y. (State Key Laboratory of Animal Nutrition, China Agricultural University) ;
  • Ma, Y.X. (State Key Laboratory of Animal Nutrition, China Agricultural University)
  • Received : 2015.01.07
  • Accepted : 2015.04.10
  • Published : 2015.10.01


This study was conducted to investigate the effects of post-harvest storage duration and wheat variety on the digestibility and energy content of new season wheat fed to finishing pigs. Two wheat varieties (Shi and Zhong) were harvested in 2013 and stored in the warehouse of the Fengning Pig Experimental Base at China Agricultural University for 3, 6, 9, or 12 mo. For each storage period, 12 barrows were placed in metabolism crates and allotted to diets containing 1 of the 2 wheat varieties in a randomized complete block design. The experimental diets contained 97.34% wheat and 2.66% of a vitamin and trace mineral premix. With an extension of storage duration from 3 mo to 12 mo, the gross energy (GE) and crude protein (CP) of the wheat decreased by 2.0% and 12.01%, respectively, while the concentration of neutral detergent fiber (NDF), acid detergent fiber (ADF) and starch content increased by 30.26%, 19.08%, and 2.46%, respectively. Total non-starch polysaccharide, total arabinose, total xylose and total mannose contents decreased by 46.27%, 45.80%, 41.71%, and 75.66%, respectively. However, there were no significant differences in the chemical composition between the two wheat varieties with the exception of ADF which was approximately 13.37% lower in Shi. With an extension of storage duration from 3 mo to 12 mo, the digestible energy (DE), metabolizable energy (ME) content and the apparent total tract digestibility of GE, CP, dry matter, organic matter, ether extract, ADF and metabolizability of energy in wheat decreased linearly (p<0.01) by 5.74%, 7.60%, 3.75%, 3.88%, 3.50%, 2.47%, 26.22%, 27.62%, and 3.94%, respectively. But the digestibility of NDF changed quadratically (p<0.01). There was an interaction between wheat variety and storage time for CP digestibility (p<0.05), such that the CP digestibility of variety Zhong was stable during 9 mo of storage, while the CP digestibility of variety Shi decreased (p<0.05). In conclusion, the GE, DE, and ME of wheat was stable during the first 3 to 6 mo of post-harvest storage, and decreased during the following 6 to 12 mo of storage under the conditions of this study.


Digestibility;Digestible and Metabolizable Energy;Finishing Pigs;Post-harvest Storage;Wheat


  1. Huyghebaert, G. and F. J. Schoner. 1999. Influence of storage and addition of enzyme on metabolisable energy content of wheat 1. Impact of storage and enzyme addition. Archiv fur Geflugelkunde 63:13-20.
  2. Jood, S., A. C. Kapoor, and R. Singh. 1993. Available carbohydrates of cereal grains as affected by storage and insect infestation. Plant Foods Hum. Nutr. 43:45-54.
  3. Kim, J. C., B. P. Mullan, P. H. Simmins, and J. R. Pluske. 2003. Variation in the chemical composition of wheats grown in Western Australia as influenced by variety, growing region, season, and post-harvest storage. Aust. J. Agric. Res. 54:541-550.
  4. Kim, J. C., P. H. Simmins, B. P. Mullan, and J. R. Pluske. 2005. The digestible energy value of wheat for pigs, with special reference to the post-weaned animal. Anim. Feed Sci. Technol. 122:257-287.
  5. Knudsen, K. E. B. 1997. Carbohydrate and lignin contents of plant materials used in animal feeding. Anim. Feed Sci. Technol. 67:319-338.
  6. Knudsen, K. E. B. and H. Jorgensen. 2001. Intestinal degradation of dietary carbohydrates-from birth to maturity. In: Digestive Physiology of Pigs (Eds. J. E. Lindberg, and B. Ogle). CABI Publishing, Wallingford, UK. pp. 109-120.
  7. Kong, C. and O. Adeola. 2014. Invited review: Evaluation of amino acid and energy utilization in feedstuff for swine and poultry diets. Asian Australas. J. Anim. Sci. 27:917-925.
  8. Kopinski, J. 1997. Characteristics of cereal grains affecting energy value. In: Pig Research and Development Corporation Final Report DAQ35P. Pig Research and Development Corporation, Canberra, Australia.
  9. Lloyd, L. E. and E. W. Crampton. 1955. The apparent digestibility of the crude protein of the pig ration as a function of its crude protein and crude fiber content. J. Anim. Sci.14:693-699.
  10. Metayer, J. P., F. Grosjean, and J. Castaing. 1993. Study of variability in french cereals. Anim. Feed Sci. Technol. 43:87-108.
  11. National Research Council. 1998. Nutrient Requirements of Swine. 10th Ed. Natl. Acad. Press, Washington, DC, USA.
  12. National Research Council. 2012. Nutrient Requirements of Swine. 11th Ed. Natl. Acad. Press, Washington, DC, USA.
  13. Noblet, J. and J. M. Perez. 1993. Prediction of digestibility of nutrients and energy values of pig diets from chemical analysis. J. Anim. Sci. 71:3389-3398.
  14. Regmi, P. R., N. S. Ferguson, and R. T. Zijlstra. 2009. In vitro digestibility techniques to predict apparent total tract energy digestibility of wheat in grower pigs. J. Anim. Sci. 87:3620-3629.
  15. Rehman, Z. U. 2006. Storage effects on nutritional quality of commonly consumed cereals. Food Chem. 95:53-57.
  16. Rehman, Z. U. and W. H. Shah. 1999. Biochemical changes in wheat during storage at three temperatures. Plant Foods Hum. Nutr. 54:109-117.
  17. AOAC International. 2007. Official Methods of Analysis. 18th ed. AOAC Int., Arlington, VA, USA.
  18. Batterham, E. S., C. E. Lewis, R. F. Lowe, and C. J. McMillan. 1980. Digestible energy content of cereals and wheat byproducts for growing pigs. Anim. Prod. 31:259-271.
  19. Bell, J. M., A. Shires, and M. O. Keith. 1983. Effect of hull and protein contents of barley on protein and energy digestibility and feeding value for pigs. Can. J. Anim. Sci. 63:201-211.
  20. Cadogan, D. J., M. Choct, and R. G. Campbell. 2003. Effects of storage time and exogenous xylanase supplementation of new season wheats on the performance of young male pigs. Can. J. Anim. Sci. 83:105-112.
  21. Choct, M. and B. Hughes. 2000. The new season grain phenomenon: The role of endogenous glycanases in the nutritive value of cereal grains in broiler chickens. Rural Industries Research and Development Corporation, Armidale, Australia. pp. 1-49.
  22. Choct, M. and R. J. Hughes. 1997. The nutritive value of new season grains for poultry. In: Recent Advancements in Animal Nutrition in Australia (Eds. J. L. Corbett, M. Choct, J. V. Nolan, and J. B. Rowe). University of New England, Armidale, Australia. pp. 146-150.
  23. Choct, M. and R. J. Hughes. 1999. Effect of storage on the value of cereal grains for poultry. In: Proceedings of the Eleventh Australian Poultry and Feed Convention (Ed. M. Murrell). Gold Coast, Australia. pp. 223-239.
  24. Choct, M., R. J. Hughes, and G. Annison. 1999. Apparent metabolisable energy and chemical composition of Australian wheat in relation to environmental factors. Aust. J. Agric. Res. 50:447-451.
  25. Dusel, G., H. Kluge, K. Glaser, O. Simon, G. Hartmann, J. V. Lengerken, and H. Jeroch. 1997. An investigation into the variability of extract viscosity of wheat-relationship with the content of non-starch-polysaccharide fractions and metabolisable energy for broiler chickens. Archiv. Tierernaehr. 50:121-135.
  26. Anderson, D. M. and J. M. Bell. 1983. The digestibility by pigs of dry matter, energy, protein and amino acids in wheat cultivars. II. Fifteen cultivars grown in two years, compared with Bonanza and Fergus barleys, and 3CW-Grade hard red spring wheat. Can. J. Plant Sci. 63:393-406.
  27. Annison, G. 1993. The role of wheat non-starch polysaccharides in broiler nutrition. Aust. J. Agric. Res. 44:405-422.
  28. Englyst, H. N. and G. J. Hudson. 2001. Dietary fiber analysis as nonstarch polysaccharides. In: Dietray Fiber in Human Nutrition (Ed. G. A. Spiller). 3rd. CRC Press, Boca Raton, FL, USA. pp. 67-82.
  29. Gong, K. J. and L. R. Chen. 2013. Characterization of carbohydrates and their metabolizing enzymes related to the eating quality of postharvest fresh waxy corn. J. Food Biochem.34:619-627.
  30. Gutierrez-Alamo, A., P. Perez de Ayala, M. W. A. Verstegen, L. A. D. Hartog, and M. J. Villamide. 2008. Variability in wheat: Factors affecting its nutritional value. World Poult. Sci. J. 64:20-39.
  31. Rose, S. P. and M. Bedford. 1995. Relationship between the metabolisable energies of wheat samples and the productive performance of broilers. Br. Poult. Sci. 36:864-865.
  32. Scott, T. A. and A. B. Pierce. 2001. The effect of storage of cereal grain and enzyme supplementation on measurements of AME and broiler chick performance. Can. J. Anim. Sci. 81:237-243.
  33. Scott, T. A., F. G. Silversides, H. L. Classen, M. L. Swift, and M. R. Bedford. 1998. Comparison of sample source (excreta or ileal digesta) and age of broiler chick on measurement of apparent digestible energy of wheat and barley. Poult. Sci. 77:456-463.
  34. Smith, W. C., P. J. Moughan, G. Person, and K. A. C. James. 1987. Comparative bioavailable energy values of five ground cereal grains measured with growing rats and pigs. Anim. Feed Sci. Technol. 18:143-150.
  35. Steenfeldt, S. 2001. The dietary effect of different wheat cultivars for broiler chickens. Br. Poult. Sci. 42:595-609.
  36. Thiex, N. J., S. Anderson, and B. Gildemeister. 2003. Crude fat, diethyl ether extraction, in feed, cereal grain, and forage (Randall/Soxtec/Submersion method): Collaborative study. J. AOAC. Int. 86:888-898.
  37. Van Soest, P. J., J. B. Robertson, and B. A. Lewis. 1991. Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition. J. Dairy Sci. 74:3583-3597.
  38. Wiseman, J. 2000. Correlation between physical measurements and dietary energy values of wheat for poultry and pigs. Anim. Feed Sci. Technol. 84:1-11.
  39. Zijlstra, R. T., C. F. M. de Lange, and J. F. Patience. 1999. Nutritional value of wheat for growing pigs: Chemical composition and digestible energy content. Can. J. Anim. Sci. 79:187-194.

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