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Determinations of feed–milk–manure relationships on grazing-based dairy farms

Published online by Cambridge University Press:  06 March 2012

J. M. Powell ,
S. R. Aarons  and
C. J. P. Gourley
J. M. Powell*
Affiliation:
United States Department of Agriculture, Agricultural Research Service, US Dairy Forage Research Center, 1925 Linden Drive, Madison, WI 53706, USA
S. R. Aarons
Affiliation:
Future Farming Systems Research Division, Department of Primary Industries, 1301 Hazeldean Road, Ellinbank, Victoria 3821, Australia
C. J. P. Gourley
Affiliation:
Future Farming Systems Research Division, Department of Primary Industries, 1301 Hazeldean Road, Ellinbank, Victoria 3821, Australia
*
†E-mail: [email protected]
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Abstract

Feed conversion into milk, nutrient excretion in manure and subsequent environment impacts of manure management are highly influenced by the diets that farmers feed their lactating cows (Bos taurus). On confinement-based dairy farms, determinations of diet composition are relatively straightforward because the types, amounts and nutrients contained in stored feeds are often well known. However, on grazing-based dairy farms, diet composition is more difficult to determine because forage intake during grazing must be estimated. The objectives of this study were to determine relationships between (1) feed N intake (NI), milk production, milk urea N (MUN), feed N use efficiency (FNUE) and excreted manure N (ExN); and (2) between feed P intake (PI), dung P concentrations (g/kg dry matter (DM)) and excreted manure P (ExP) for grazing-based lactating cows having a very wide range of diets and milk production. An additional objective was to evaluate how well these relationships compare with similar relationships based on more direct measurement of feed–milk–manure on confinement-based dairy farms. Four dairy farms located in southeastern Australia were visited during autumn and spring, and data were collected on feed, milk and dung of 18 cows on each farm. Estimated dry matter intake (DMI) from pasture comprised 12% to 75% of total diet DMI, and the crude protein (CP) concentrations in the total diets ranged from 167 to 248 g/kg. During spring, as diet CP increased FNUE declined. Total diet DMI and NI provided the best predictors of ExN, and PI provided the most accurate prediction of ExP. These results indicated accuracy in the study's indirect estimates of pasture DMI. Likely due to high levels and great variability in dietary CP and P concentrations associated with use of diet supplements, MUN did not appear to be a good indicator of dietary CP, and P in dung was not a good indicator of dietary P.

Keywords

grazingMUNmanurenitrogenphosphorus
Type
Full Paper
Information
animal , Volume 6 , Issue 10 , October 2012 , pp. 1702 - 1710
Copyright
Copyright © The Animal Consortium 2012

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References

Accounting for Nutrients 2010. Accounting for nutrients on Australian dairy farms. Retrieved January 27, 2012, from http://www.accounting4nutrients.com.au/ Google Scholar
Association of Official Analytical Chemists (AOAC) 2000. Official methods of analysis, vol. II, 17th edition. AOAC, Arlington, VA, USA.Google Scholar
Australian Fodder Industry Association (AFIA) 2011. Laboratory methods manual. A reference manual of standard methods for the analysis of fodder, version 7. Retrieved January 27, 2012, from http://www.afia.org.au/laboratories/methods_manual/ Google Scholar
Beede, DK 2001. Calcium and phosphorus nutrition of dairy cattle. In Celebrating creativity: a symposium honoring the scientific contributions of H Russell Conrad (ed. B Weiss), pp. 41–67. The Ohio State University, Columbus, OH, USA.Google Scholar
Beever, DT, Doyle, PT 2007. Feed conversion efficiency as a key determinant of dairy herd performance: a review. Australian Journal of Experimental Agriculture 47, 645–657.CrossRefGoogle Scholar
Broderick, GA 2003. Effects of varying dietary protein and energy levels on the production of lactating dairy cows. Journal of Dairy Science 86, 1370–1381.CrossRefGoogle ScholarPubMed
Bulley, NR, Holbek, N 1982. Nitrogen mass balance for dairy farms from feed to field. Canadian Agricultural Engineering 24, 19–23.Google Scholar
Chapuis-Lardy, L, Fiorini, J, Toth, J, Dou, Z 2004. Phosphorus concentration and solubility in dairy feces: variability and affecting factors. Journal of Dairy Science 87, 4334–4341.CrossRefGoogle ScholarPubMed
Commonwealth Scientific and Industrial Research Organization (CSIRO) 2007. Nutrient requirements of domesticated ruminants. CSIRO Publishing, Collingwood, Victoria, Australia.Google Scholar
Dou, Z, Ferguson, JD, Fiorini, J, Toth, JD, Chase, LE, Knowlton, KA, Kohn, RA, Sims, JT, Wu, Z 2003. Phosphorus feeding levels and critical control points on dairy farms. Journal of Dairy Science 86, 3787–3795.CrossRefGoogle ScholarPubMed
Dou, Z, Ramberg, CF, Chapuis-Lardy, L, Toth, JD, Wang, Y, Munson, RJ, Wu, Z, Chase, LE, Kohn, RA, Knowlton, KF, Ferguson, JD 2007. A novel test for measuring and managing potential phosphorus loss from dairy cattle feces. Environmental Science and Technology 41, 4361–4366.CrossRefGoogle ScholarPubMed
Dahlquist, RL, Knoll, JW 1978. Inductively coupled plasma–atomic emission spectrometry: analysis of biological materials and soils for major, trace, and ultra-trace elements. Applied Spectroscopy 32, 1–29.CrossRefGoogle Scholar
Ebeling, AM, Bundy, LG, Powell, JM, Andraski, TW 2002. Dairy diet phosphorus effects on phosphorus losses in runoff from land-applied manure. Soil Science Society of America Journal 66, 284–291.Google Scholar
Gourley, CJP, Aarons, SA, Powell, JM 2012. Nitrogen use efficiency in grazed and confinement dairy production systems. Agriculture, Ecosystems and the Environment 147, 73–81.CrossRefGoogle Scholar
Gourley, CJP, Dougherty, WJ, Weaver, DM, Aarons, SR, Awty, IM, Gibson, DM, Hannah, MC, Smith, AP, Peverill, KI 2012. Farm-scale nitrogen, phosphorus, potassium and sulphur balances and use efficiencies on Australian dairy farms. Animal Production Science (In press).CrossRefGoogle Scholar
Gourley, CJP, Powell, JM, Dougherty, WJ, Weaver, DM 2007. Nutrient budgeting as an approach for improving nutrient management on Australian dairy farms. Australian Journal of Experimental Agriculture 47, 1064–1074.CrossRefGoogle Scholar
Grainger, C, Mathews, GL 1989. Positive relation between substitution rate and pasture allowance for cows receiving concentrates. Australian Journal of Experimental Agriculture and Animal Husbandry 29, 355–360.CrossRefGoogle Scholar
Heard, JW, Cohen, DC, Doyle, PT, Wales, WJ, Stockdale, CR 2004. Diet check – a tactical decision support tool for feeding decisions with grazing dairy cows. Animal Feed Science and Technology 112, 177–194.CrossRefGoogle Scholar
Hutjens, MJ 1998. MUN as a management tool. Illini DairyNet Papers. University of Illinois Extension, Champaign, Illinois. Retrieved January 27, 2012, from http://www.livestocktrail.uiuc.edu/dairynet/paperDisplay.cfm?ContentID=233 Google Scholar
Johnson, RG, Young, AJ 2003. The association between milk urea nitrogen and DHI production variables in Western commercial dairy herds. Journal of Dairy Science 86, 3008–3015.CrossRefGoogle ScholarPubMed
Jonker, JS, Kohn, RA, Erdman, RA 1998. Using milk urea nitrogen to predict nitrogen excretion and utilization efficiency in lactating dairy cows. Journal of Dairy Science 81, 2681–2692.CrossRefGoogle ScholarPubMed
Kauffmann, AJ, St-Pierre, NR 2001. The relationship of milk urea nitrogen to urine nitrogen excretion in Holstein and Jersey cows. Journal of Dairy Science 84, 2284–2294.CrossRefGoogle Scholar
Kebreab, E, France, J, Beever, DE, Castillo, AR 2001. Nitrogen pollution by dairy cows and its mitigation by dietary manipulation. Nutrient Cycling in Agroecosystems 60, 275–285.CrossRefGoogle Scholar
Kebreab, E, Strathe, AB, Dijkstra, J, Mills, JAN, Reynolds, CK, Crompton, LA, Yan, T, France, J 2010. Energy and protein interactions and their effects on nitrogen excretion in dairy cows. In Energy, protein and metabolism and nutrition. Proceedings of the 3rd European Association for Animal Production and International Symposium on Energy and Protein Metabolism and Nutrition, 6–10 September 2010, Parma, Italy (ed. GM Crovetto), EAPP Publication No. 127, pp. 417–426. Wageningen Academic Publishers, Wageningen, the Netherlands.Google Scholar
Kerscher, L, Ziegenhorn, J 1990. Urea. In Methods of enzymatic analysis (ed. HU Bergmeyer), vol. 8, 3rd edition, pp. 444–453. VCH Publishers Ltd, Cambridge, UK.Google Scholar
Kohn, R 2007. Use of milk or blood urea nitrogen to identify feed management inefficiencies and estimate nitrogen excretion by dairy cattle and other animals. Paper presented at the Florida Ruminant Nutrition Symposium, 30–31 January 2007, Gainesville, FL, USA.Google Scholar
National Research Council (NRC) 2001. Nutrient requirements of dairy cattle, 7th revised edition. National Academy Press, Washington, DC, USA.Google Scholar
Nennich, TD, Harrison, JH, VanWieringen, LM, Meyer, D, Heinrichs, AJ, Weiss, WP, St-Pierre, NR, Kincaid, RL, Davidson, DL, Block, E 2005. Prediction of manure and nutrient excretion from dairy cattle. Journal of Dairy Science 88, 3721–3733.CrossRefGoogle ScholarPubMed
Nousiainen, J, Shingfield, KJ, Huhtanen, P 2004. Evaluation of milk urea nitrogen as diagnostic of protein feeding. Journal of Dairy Science 87, 386–398.CrossRefGoogle ScholarPubMed
Powell, JM, Wu, Z, Satter, LD 2001. Dairy diet effects on phosphorus cycles of cropland. Journal of Soil and Water Conservation 56, 22–26.Google Scholar
Powell, JM, Jackson-Smith, DB, Satter, LD 2002. Phosphorus feeding and manure nutrient recycling on Wisconsin dairy farms. Nutrient Cycling in Agroecosytems 62, 277–286.CrossRefGoogle Scholar
Powell, JM, Wattiaux, MA, Broderick, GA 2011. Evaluation of milk urea nitrogen as a management tool to reduce ammonia emissions from dairy farms. Journal of Dairy Science 94, 4690–4694.CrossRefGoogle ScholarPubMed
Powell, JM, McCrory, DF, Jackson-Smith, DB, Saam, H 2005. Manure collection and distribution on Wisconsin dairy farms. Journal of Environmental Quality 34, 2036–2044.CrossRefGoogle ScholarPubMed
SAS Institute 2007. SAS/Stat user's guide, version 9.2. SAS Institute Inc., Cary, NC, USA.Google Scholar
Satter, LD, Klopfenstein, TJ, Erickson, GE, Powell, JM 2005. Phosphorus and dairy-beef nutrition. In Phosphorus Agriculture and the Environment. ASA-CSSA-SSSA Monograph no. 46 (ed. AN Sharply and JT Sims), pp. 587–606. ASA-CSSA-SSSA, Madison, WI, USA.Google Scholar
Thorrold, B, Doyle, P 2007. Nature or nurture – forces shaping the current and future state of dairy farming in New Zealand and Australia. In Proceedings of the Australasian Dairy Science Symposium (ed. D Chapman, D Clark, K Macmillan and D Nation), pp. 450–460. National Dairy Alliance, Melbourne, Australia.Google Scholar
Tomlinson, AP, Powers, WJ, Van Horn, HH, Nordstedt, RA, Wilcox, CJ 1996. Dietary protein effects on nitrogen excretion and manure characteristics of lactating cows. Transactions of the American Society of Agricultural Engineers 39, 1441–1448.CrossRefGoogle Scholar
Tyrrell, HF, Reid, JT 1965. Prediction of the energy value of cows’ milk. Journal of Dairy Science 48, 1215–1223.CrossRefGoogle Scholar
van der Merwe, BJ, Dugmore, TJ, Walsh, KP 2001. The effect of monensin on milk production, milk urea nitrogen and body condition score of grazing dairy cows. South African Journal of Animal Science 31, 49–55.Google Scholar
Wattiaux, MA 2005. Fine-tuning test-day MUN records for DHI-related variables. Proceedings of the Four-State Dairy Nutrition and Management Conference, MidWest Plan Service Publication 4SD18, Dubuque, IA, USA, pp. 71–85.Google Scholar
Wattiaux, MA, Aguerre, MJ, Powell, JM 2011. Background and overview on the contribution of dairy nutrition to addressing environmental concerns in Wisconsin: phosphorus, nitrogen (ammonia) and methane. In La Ganadéría ante el agotamiento de los paradigas dominantes (ed. CF Marcof Álvarez), vol. 1, pp. 111–139. Universidad Autoónoma Chapingo, Chapingo, México (ISBN 978-968-839-586-8).Google Scholar
Weiss, WP, Wyatt, DJ 2004. Macromineral digestion by lactating dairy cows: estimating phosphorus excretion via manure. Journal of Dairy Science 87, 2158–2166.CrossRefGoogle ScholarPubMed
Weiss, WP, Willet, LB, St-Pierre, NR, Borger, DC, Mckelvey, TR, Wyatt, DJ 2009. Varying forage type, metabolizable protein concentration, and carbohydrate source affects manure excretion, manure ammonia, and nitrogen metabolism of dairy cows. Journal of Dairy Science 92, 5607–5619.CrossRefGoogle ScholarPubMed
Wilkerson, VA, Mertens, DR, Casper, DP 1997. Prediction of excretion of manure and nitrogen by Holstein cows. Journal of Dairy Science 80, 3193–3204.CrossRefGoogle Scholar
Wu, Z, Satter, LD, Sojo, R 2000. Milk production, reproductive performance, and fecal excretion of phosphorus by dairy cows fed three amounts of phosphorus. Journal of Dairy Science 83, 1028–1041.CrossRefGoogle ScholarPubMed
Yan, T, Frost, JP, Agnew, RE, Binnie, RC, Mayne, CS 2006. Relationships among manure nitrogen output and dietary and animal factors in lactating dairy cows. Journal of Dairy Science 89, 3981–3991.CrossRefGoogle ScholarPubMed