Effects of microwaving, and moist and dry heating on ruminal degradability of protein and dry matter in soybean meal

Document Type : Research Article (Regular Paper)

Authors

1 Agriculture Department, Payame Noor University, Tehran, Iran.

2 Department of Animal Science, Faculty of Agriculture, University of Gonbad, Gonbad, Iran.

Abstract

Two experiments were conducted to evaluate the effects of microwaving, autoclaving (moist heating), and roasting (dry heating) on gas production parameters and in situ rumen degradability of soybean meal (SBM). SBM was treated by roasting at 140℃ for 30 and 60 min, and at 160℃ for 30 and 60 min, autoclaving at 121℃ for 20 min, and microwaving for 2, 4, and 6 min. A gas production trial was performed using rumen fluid collected from fistulated sheep. Cumulative gas production was recorded at 2, 4, 6, 8, 12, 24, 36, 48, 72, and 96 h after incubation. The organic matter digestibility (OMD), metabolizable energy (ME), net energy (NE), and short-chain fatty acid (SCFA) in gas production trial were calculated after 24 h incubation. For in situ technique, three fistulated sheep of the Dalaq breed (with an average weight of 54 ± 1 kg) were housed in individual cages and fed at the level of maintenance. Samples of the processed and unprocessed SBM were ground to pass through a 3 mm screen, and 5 g of each sample were transferred into nylon bags. The results showed that treatments had a significant effect on gas production potential (P<0.05). With increasing the heating duration, gas production potential increased in roasted treatments. Processing methods significantly reduced gas production (P<0.05). The lowest volume of gas production was recorded for the autoclave treatment. Processing with Micro-6 and moist heating (autoclave) resulted in a significant decrease in organic matter digestibility (OMD) compared to dry heating (roasting). Micro-6 treatment significantly (P<0.05) decreased the concentration of SCFA compared to other treatments. The results of in situ experiments showed that processing of SBM significantly reduced the rate of dry matter and protein degradation (P<0.05). Processed SBM had a lower rapid degradable fraction (a) and higher slowly degradable fraction (b) compared to the control treatment. In conclusion, the methods of heating (autoclaving, dry heating, and microwaving) of SBM decreased the gas production and gas production rate and ruminal protein degradability.

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  • AOAC., 2005. Official Methods of Analysis. Vol. 1. No. 1. 18th ed. Association of Official Analytical Chemists. Washington, D.C.
  • Bach Knudsen, K.E., 1997. Carbohydrate and lignin contents of plant materials used in animal feeding. Animal Feed Science and Technology 67, 319–338.
  • Cleale, R.M., Britton, R.A., Klopfenstein, T.J., Bauer, M.L., Harmon, D.L., Satterlee, L.D., 1987. Induced non-enzymatic browning of soybean meal. II. Ruminal escape and net portal absorption of soybean protein treated with xylose. Journal of Animal Science 65, 1319-1326.
  • Dakowski, P., Weisbjerg, M.R., Hvelplund, T., 1996. The effect of temperature during the processing of rapeseed meal on amino acid degradation in the rumen and digestion in the intestine. Animal Feed Science and Technology 58, 213-226.
  • Doiron, K., Yu, P., McKinnon, J.J., Christensen, D.A., 2009. Heat-induced protein structure and subfractions in relation to protein degradation kinetics and intestinal availability in dairy cattle. Journal of Dairy Science 92, 3319–3330.
  • El-Shabrawy, H. M., 1996. Utilization of dietary protein in ruminants. Solubility and rumen degradability of some protein and their protection. M.Sc. Thesis, Mansoura University, Egypt.
  • El-Waziry, A.M., Nasser, M.E.A., Sallam, S.M.A., 2005. Processing methods of soybean meal: 1-effect of roasting and tannic acid treated-soybean meal on gas production and rumen fermentation in vitro. Journal of Applied Science 1, 313–320.
  • El-Waziry, A.M., Nasser, M.E.A., Sallam, S.M.A., Abdallah, A.L. and Bueno, I.C.S., 2007. Processing methods of soybean meal 2. Effect of autoclaving and quebracho tannin treated-soybean meal on gas production and rumen fermentation in vitro. Journal of Applied Sciences Research 3, 17-24.
  • Esteves, E.A., Martino, H.S.D., Oliveira, F.C.E., Bressan, J., Costa, N.M.B., 2010. Chemical composition of a soybean cultivar lacking lipoxygenases (LOX2 and LOX3). Journal of Food Chemistry 122, 238-242.
  • Faldet, M.A., Voss, V.L., Broderick, G.A., Satter, L.D., 1991. Chemical, in vitro, and in situ evaluation of heat treated soybean proteins. Journal of Dairy Science 74, 2548– 2554.
  • Ipharraguerre, I.R; and Clark, J.H., 2014. A Meta-analysis of ruminal outflow of nitrogen fractions in dairy cows. Journal of Advanced Dairy Research 2, 122-134.
  • Konishi, C., Matsui, T., Park, W., Yano, H., Yano, F., 1999. Heat treatment of soybean meal and rapeseed meal suppresses rumen degradation of phytate phosphorus in sheep. Journal of Animal Feed Science and Technology 80: 115–122.
  • Ljokj, el. K., arstad, O.M.H., Skrede, A., 2000. Effect of heat treatment of soybean meal and fish meal on amino acid digestibility in mink and dairy cows. Journal of Animal Feed Science and Technology 84, 83-95.
  • Makkar, H.P.S., 2004. Recent advances in the in vitro gas method for evaluation of nutritional quality of feed resources. Assessing quality and safety of animal feeds. FAO Animal Production and Health Series 160. FAO, Rome, pp. 55–88.
  • Mehrez, A.Z., Orskov, E.R., 1977. A study of the artificial fiber bag technique for determining the digestibility of feed in the rumen. Journal of Agricultural Science 88, 645-650.
  • Menke, K.H., Raab, L., Salewski, A., Steingass, H., Fritz, D., Schneider, W., 1979. The estimation of the digestibility and metabolisable energy content of ruminant feeding stuffs from the gas production when they are incubated with rumen liquor in vitro. Journal of Agriculture and Food Science 93, 217– 222.
  • Min, B.J., Cho, J.H., Chen, Y.J., Kim, H.J., Yoo, J.S.Q., Wang, I., Kim, H., Cho, W.T., Lee, S.S., 2009. Effects of replacing soy protein concentrate with fermented soy protein in starter diet on growth performance and ileal amino acid digestibility in weaned pigs. Asian-Australasian Journal of Animal Sciences 22, 99–106.
  • NRC (National Research Council). 1985. Ruminant Nitrogen Usage. National Academy of Science, Washington, DC, USA.
  • NRC (National Research Council). 2001. Nutrient Requirements of Dairy Cattle. 7th Ed. National Academy of Science, Washington, DC, USA.
  • Orskov, E.R., MacDonald, I., 1979. The estimate of protein degradability in the rumen from incubation measurements weighted according to rate of passage. Journal of Agricultural Science 92, 499- 503.
  • Peng, Q., Khan, N.A., Wang, Z., Yu, P., 2014. Moist and dry heating-induced changes in protein molecular structure, protein subfractions, and nutrient profiles in camelina seeds. Journal of Dairy Science 97, 446–457.
  • Samadi, Yu, P., 2011. Dry and moist heating-induced changes in protein molecular structure, protein subfraction, and nutrient profiles in soybeans. Journal of Dairy Science 94, 6092–6102.
  • SAS. 2003. SAS User’s Guide. Version 9.1. SAS Institute Inc., Cary, NC.
  • Schroeder, J.W., 1997. Corn gluten feed for dairy cattle. http://hdl.handle.net/10365/9242
  • Thanh, L.P., Suksombat, W., 2015. Milk production and income over feed costs in dairy cows fed medium-roasted soybean meal and corn dried distiller’s grains with soluble. Asian Australasian Journal of Animal Sciences 28, 519-529.
  • Titgemeyer, E.C., Shirley, J.E., 1997. Effect of processed grain sorghum and expeller soybean meal on performance of lactating cows. Journal of Dairy Science 80,714-721.
  • Stevens, C.E., Hume, I.D., 2004. Comparative physiology of the vertebrate digestive system. Cambridge University Press, Page. 189.
  • Wei G., Aodong C., Bowen Z., Ping K., Chenli L., Jie Z., 2015. Rumen degradability and post-ruminal digestion of dry matter, nitrogen and amino acids of three protein supplements. Asian-Australasian Journal of Animal Sciences 28, 485-493.