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:: Volume 1, Issue 1 (4-2025) ::
Journalaer 2025, 1(1): 7-14 Back to browse issues page
Effects of replacing soybean meal with slow-release urea on milk production, nutrient digestibility and blood parameters of Holstein dairy cows
Saeid Hallajian , Jafar Fakhraei Dr. * , Hosein Mansori Yarahmadi , Kaveh Jafari khorshidi
Abstract:   (96 Views)
Introduction: This study was conducted to evaluate the effects of replacing soybean meal (SBM) with slow-release urea (SRU) on milk production, nutrient digestibility, and blood parameters of Holstein dairy cows.
Materials & Methods: In this regard, sixteen Holstein dairy cows weighing between 550-680 kg, yielding ~ 30 kg milk/d were randomly assigned to 4 dietary treatments (4 replicates or cows) in a 12-week study. Treatments consisted of i) control diet which included SBM as a protein source; ii) control diet supplemented with 0.5%, 0.75% and 1% SRU.  In this regard, sixteen Holstein dairy cows weighing between 550-680 kg, yielding ~ 30 kg milk/d were randomly assigned to 4 dietary treatments (4 replicates or cows) in a 12-week study. Treatments consisted of i) control diet which included SBM as a protein source; ii) control diet supplemented with 0.5%, 0.75% and 1% SRU.
Result: Feeding SRU did not have any significant effect on milk production(P>0.5), but milk production was higher for the cows fed 0.5% SRU. Crude protein (CP) digestibility was significantly different between treatments(P<0.05). Feeding SRU did not have any significant effect on organic matter (OM), ether extract (EE), non-structural carbohydrates (NSC) and Acid detergent fiber (ADF) digestibility(P>0.05). Also, glucose and very-low-density lipoprotein (VLDL) concentrations were not significantly affected by feeding SRU(P>0.05). Plasma cholesterol and triglyceride concentrations, high-density lipoprotein (HDL), low-density lipoprotein (LDL) and blood urea nitrogen (BUN) concentrations were significantly different between treatments(P<0.05).
Conclusion: Based on the results of this study, replacing SBM with SRU improves fiber and protein digestibility, microbial protein production, productive performance and finally reduces the productions’ costs.
Keywords: Slow-release urea, Milk production, Digestibility, Soybean meal, Holstein dairy cows
Full-Text [PDF 777 kb]   (43 Downloads)    
Type of Study: Research | Subject: Special
Received: 2026/08/11 | Accepted: 2025/04/30 | Published: 2025/04/30
References
1. 1. Amiri Nasab, F., Zand, K. and Karimi, K., 2017. Evaluation the effects of replacing guar meal with soybean on blood parameters and milk production factors of Holstein dairy cow in Kerman province. J Anim Environ. 9(3): 27-34. https://dorl.net/dor/20.1001.1.2717 1388.1396.9.3.4.4 (In Persian)
2. 2. Russell, J.B., 2002. Rumen microbiology and its role in ruminant nutrition. New York: Cornell University;
3. 3. Mashayekhi, M., Sari, M. and Erfani Majd, N., 2020. Evaluation of the effects of adding conventional urea and slow-release urea to diets containing molasses on microbial fermentation by gas production method. J Anim Environ. 12(4):103-110. https://dx.doi.org/10.22034/aej. 2020.124926 (In Persian)
4. 4. Satter, L.D. and Roffler, R.E., 1981. Influence of nitrogen and carbohydrate inputs on rumen fermentation, In recent developments in ruminant nutrition. London: Butterworths.
5. 5. Seidavi, A., Samadi, M.S. and Bokharaeian, M., 2017. Nitrogen and phosphorus nutrition in ruminants. Rasht: Islamic Azad University of Rasht.
6. 6. Highstreet, A., Robinson, P., Robison, J. and Garrett, J., 2010. Response of Holstein cows to replacing urea with a slowly rumen released urea in a diet high in soluble crude protein. Lives Sci. 129(1): 179-185. https://doi.org/ 10.1016/j.livsci.2010.01.022
7. 7. Tikofsky, J. and Harrison, G.A., 2006. Optigen® II: Improving the efficiency of nitrogen utilization in the dairy cow, InNutritional biotechnology in the feed and food industries: Proceedings of Alltech's 22nd Annual Symposium Lexington Kentucky USA. 23-26 April.
8. 373-380.
9. 8. Van Kempen, T.A., Baker, D.H. and Van Heugten, E., 2003. Nitrogen losses in metabolism trials. J Anim Sci. 81(10): 2649-2650. https://doi,org/10,2527/2003,811026 49x
10. 9. Storm, E., Orskov, E. and Smart, R., 1983. The nutritive value of rumen micro-organisms in ruminants, 2, The apparent digestibility and net utilization of microbial N for growing lambs. Br J Nutr. 50(2): 471-478. https://doi:10,1079/BJN19830115
11. 10. National Research Council. 2001. Nutrient requirements of dairy cattle: National Academies Press; 2001 Feb 9.
12. 11. Feldsine, P., Abeyta, C. and Andrews, W.H., 2002. AOAC International methods committee guidelines for validation of qualitative and quantitative food microbiological official methods of analysis. J AOAC Int. 85(5): 1187-200.
13. 12. 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. Dairy Sci. 74(10): 3583-3597. https://doi,org/10,3168/ jds,S0022-0302(91)78551-2
14. 13. Broderick, G.A. and Clayton, M.K., 1997. A statistical evaluation of animal and nutritional factors influencing concentrations of milk urea nitrogen. Dairy Sci. 80(11): 2964-2971. https://doi,org/10,3168/jds,S0022-0302(97)7 6262-3
15. 14. Broderick, G.A. and Kang, J.H., 1980. Automated simultaneous determination of ammonia and total amino acids in ruminal fluid and In vitro media. Dairy Sci. 63(1): 64-75. https://doi,org/10,3168/jds,S0022-0302(80) 82888-8
16. 15. SAS Institute Inc. 2012. SAS/STAT (version 9,3) [computer software]
17. 16. Tukey, J.W., 1949. Comparing individual means in the analysis of variance. Biometrics. 1: 99-114. https://doi. org/10.2307/3001913
18. 17. Galo, E., Emanuele, S.M., Sniffen, C.J., White, J.H. and Knapp, J.R., 2003. Effects of a polymer-coated urea product on nitrogen metabolism in lactating Holstein dairy cattle. Dairy Sci. 86(6): 2154-2162. https://doi. org/10.3168/jds.S0022-0302(03)73805-3
19. 18. Cherdthong, A. and Wanapat, M., 2010. Development of urea products as rumen slow-release feed for ruminant production: A review. Aust J Basic & Appl Sci. 4(8): 2232-2241.
20. 19. Santiago, B.T., Villela, S.D., Leonel, F.D., Zervoudakis, J.T., Araújo, R.P. and Machado, H.V., 2015. Slow release urea in diets for lactating crossbred cows. Rev Bras de Zootec. 44: 193-199. https://doi,org/10,1590/ S1806-92902015000500005
21. 20. Ribeiro, S.S., Vasconcelos, J.T., Morais, M.G., Ítavo, C.B.C.F. and Franco, G., 2011. Effects of ruminal infusion of a slow-release polymer-coated urea or conventional urea on apparent nutrient digestibility in situ degradability and rumen parameters in cattle fed low-quality hay. Anim Feed Sci and Technol. 164(1-2): 53-61. https://doi,org/10,1016/j,anifeedsci,2010,12,003
22. 21. Taylor-Edwards, C.C., Elam, N.A., Kitts, S.E., McLeod, K.R., Axe, D.E. and Vanzant, E.S., 2009. Influence of slow-release urea on nitrogen balance and portal-drained visceral nutrient flux in beef steers. J Anim Sci. 87(1): 209-221. https://doi.org/10,2527/jas.2008-09 13
23. 22. Cherdthong, A., Wanapat, M. and Wachirapakorn, C., 2011. 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(2-3): 76-84. https://doi.org/ 10.1016/j.livsci.2010.08.002
24. 23. Lizarazo, A.C., Mendoza, G.D., Kú, J., Melgoza, L.M. and Crosby, M., 2014. Effects of slowrelease urea and molasses on ruminal metabolism of lambs fed with low quality tropical forage. Small Rumin Res. 116(1): 28-31. https://doi.org/10.1016/j.smallrumres.2013.10.009
25. 24. Gadegaonkar, G., Gulavane, S. and Karamble, N., 2019. Influence of Slow-Release Non-Protein Nitrogen Compound on Utilization of Poor-Quality Roughages and Lactation Performance in Lactating Cows. Int. J Livest Res. 9(1). https://doi.org/10.5455/ijlr.20180720071909.
26. 25. Benedeti, P.D.B., Paulino, P.V.R., Marcondes, M.I., Valadares Filho, S.C., Martins, T.S. and Lisboa, E.F., 2014. Soybean meal replaced by slow-release urea in finishing diets for beef cattle. Livest. Sci. 165: 51-60. https://doi.org/10.1016/j.livsci.2014.04.027
27. 26. Inostroza, J.F., Shaver, R.D., Cabrera, V.E. and Tricárico, J.M., 2010. Effect of diets containing a controlled-release urea product on milk yield milk composition and milk component yields in commercial Wisconsin dairy herds and economic implications. Prof Anim Sci J. 26(2): 175-180. https://doi.org/10.15232/S1 080-7446(15)30577-5
28. 27. Xin, H.S., Schaefer, D.M., Liu, Q.P., Axe, D.E. and Meng, Q.X., 2010. Effects of polyurethane coated urea supplement on in vitro ruminal fermentation ammonia release dynamics and lactating performance of Holstein dairy cows fed a steam-flaked corn-based diet. Asian Aust J Anim Sci. 23(4): 491-500. https://doi.org/10.5713/ajas. 2010.90153
29. 28. Ayasan, T., Hizli, H. and Yazgane, E., 2011. The effect of milk urea nitrogen on milk composition in Holstein dairy cows. Eurasian J Vet Sci. 27(4): 219-222. (In Turkish)
30. 29. Godden, S., Kelton, D., Lissemore, K., Walton, J., Leslie, K. and Lumsden, J., 2001. Milk urea testing as a tool to monitor reproductive performance in Ontario dairy herds. Dairy Sci. 84(6): 1397-1406. https://doi.org/10. 3168/jds.S0022-0302(01)70171-3
31. 30. Ayasan, T., Hizli, H., Yazgan, E., Kara, U. and Gok, K., 2011. The effect of somatic cell counts on milk urea nitrogen and milk composition. Kafkas Universitesi Veteriner Fakultesi Dergisi. 17(4): 659-62. https://doi. org/10.9775/kvfd.2011.4489 (In Turkish)
32. 31. Olmos Colmenero, J.J. and Broderick, G.A., 2006. Effect of dietary crude protein concentration on milk production and nitrogen utilization in lactating dairy cows. Dairy Sci. 89(5): 1704-1712. https://doi.org/10. 3168/jds.S0022-0302(06)72238-X
33. 32. Wilson, R.C., Overton, T. and Clark, J., 1998. Effects of Yucca shidigera extract and soluble protein on performance of cows and concentrations of urea nitrogen in plasma and milk. J dairy sci. 81(4): 1022-1027. https://doi.org/10.3168/jds.S0022-0302(98)75664-4
34. 33. Huntington, G.B., Harmon, D.L., Kristensen, N.B., Hanson, K.C. and Spears, J.W., 2006. Effects of a slow-release urea source on absorption of ammonia and endogenous production of urea by cattle. Anim Feed Sci and Technol. 130(3-4): 225-241. https://doi.org/10.1016/ j.anifeedsci.2006.01.012
35. 34. Calomeni, D.G., Gardinal, R., Venturelli, B.C., Freitas Junior, J.E.D., Vendramini, T.H.A. and Takiya, C.S., 2015. Effects of polymer-coated slow-release urea on performance ruminal fermentation and blood metabolites in dairy cows. Rev Bras de Zootec. 44(09): 327-334. http://dx.doi.org/10.1590/S1806-92902015000900004.
36. 35. Butler, W., Calaman, J. and Beam, S., 1996. Plasma and milk urea nitrogen in relation to pregnancy rate in lactating dairy cattle. J Anim Sci. 74(4): 858-865. https:// doi.org/10.2527/1996.744858x
37. 36. Alizadeh, Z., Yansari, A.T., Chasnidal, Y., Kazemifard, M. and Azarpajouh, S., 2021. Effect of soybean meal replacement by slow-release urea on ruminal parameter, blood metabolites, and microbial protein synthesis in Zel ram. Acta Sci, Anim Sci. 43(1). https://doi.org/10.4025/actascianimsci.v43i1.48684
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Hallajian S, Fakhraei J, Mansori Yarahmadi H, Jafari khorshidi K. Effects of replacing soybean meal with slow-release urea on milk production, nutrient digestibility and blood parameters of Holstein dairy cows. Journalaer 2025; 1 (1) :7-14
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Volume 1, Issue 1 (4-2025) Back to browse issues page
پژوهش های محیط زیست جانوری Journal of Animal Environmental Research
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