Effect of forage source and feeding frequency of nitrogen sources on the performance, digestibility and blood metabolites of lactating dairy cows

Document Type : Research Paper

Authors

Abstract

Twelve multiparous (100±10 d in milk) Holstein dairy cows were used in a 6×6 incomplete Latin square design (five 21-d periods) with a 2×3 factorial arrangement of treatments to evaluate the effect of forage sources and rumen degradable nitrogen fractions and their feeding frequency on performance, total tract digestibility and blood metabolites. Treatments were different proportion of alfalfatocorn-silage (35:15 and 15:35) and different feeding frequency of the rumen degradable nitrogen source: 1- Total mixed ration (TMR) was offered once daily in the morning (09:00); 2- A part of soybean meal was offered at 21:00; 3- A part of urea was offered at 21:00. Dry matter intake and body weight change were not affected by treatments. Milk and 3.5% fat-corrected milk yield increased in corn silage-based diets compared with alfalfa hay-based diets (P<0.05). Feeding part of soybean meal at night increase milk yield, energy corrected milk and 3.5% fat-corrected milk production (P<0.01). Milk percentage of fat, protein and lactose did not differ among treatments. Feed efficiency not affected by forage source but increased in cows fed soybean meal at night (P<0.05). Apparent total-tract digestibility of dry matter, organic matter, and neutral detergent fiber tended to increase in corn silage-based diets (P<0.1). Plasma urea nitrogen (6 h after feeding) was higher in cows fed once daily (P<0.01). The results indicated that corn silage-based diets improved milk production and dry matter and fiber digestibility compared with alfalfa hay-based diets. Feeding part of soybean meal at night increase performance of Holstein dairy cows.

Keywords


Allen, M.S. (2000). Effects of diet on short-term regulation of feed intake by lactating dairy cattle. Journal of Dairy science. 83: 1598–1624.
Alvarez, A.E.G., Huntington, G.B. and Burns, J.C. (2012). Effects of supplemental urea sources and feeding frequency on ruminal fermentation, fiber digestion, and nitrogen balance in beef steers. Animal Feed Science and Technology. 171: 136-145.
AOAC, (2000). Official Methods of Analysis.17th ed. Association of Official Analytical Chemists, Arlington, Virginia.
Broderick, G.A. (1985). Alfalfa silage or hay versus corn silage as the sole forage for lactating dairy cows. Journal of dairy science. 68:3262–3271.
Broderick, G.A. and Reynal, S.M. (2009). Effect of source of rumen-degraded protein on production and ruminal metabolism in lactating dairy cows.Journal of dairy science. 92: 2822–2834.
Ceconi, I., Ruiz-Moreno, M.J., DiLorenzo, N., DiCostanzo, A. and Crawford G.I. (2015). Effect of urea inclusion in diets containing corn dried distillers grains on feedlot attle performance, carcass characteristics, ruminal fermentation, total tract digestibility, and purine derivatives-to-creatinine index.Journal of Animal Science. 93: 357–369.
Dhiman, T.R. and Satter, L.D. (1997). Yield response of dairy cows fed different proportions of alfalfa silage and corn silage. Journal of dairy science. 80:2069–2082.
Fox, D.G., Tedeschi, L.O., Tylutki, T.P., Russell, J.B., Van Amburgh, M.E., Chase, L.E., Pell, A.N. and Overton, T.R. (2004). The cornell net carbohydrate and protein system model for evaluating herd nutrition and nutrient excretion. Animal feed science and Technology. 112: 29-78.
Griswold, KE., Apgar, G.A., Bouton, J. and Firkins, J.L. (2003). Effects of urea infusion and ruminal degradable protein concentration on microbial growth, digestibility, and fermentation in continuous culture.Journal of Animal Science. 81: 329-336.
Groff, E.B. and Wu, Z. (2005). Milk production and nitrogen excretion of dairy cows fed different amounts of protein and varying proportions of alfalfa and corn silage. Journal of dairy science. 88:3619–3632.
Hristov, A.N. and Broderick, G.A. (1996). Synthesis of microbial protein in ruminally cannulated cows fed alfalfa silage, alfalfa hay, or corn silage. Journal of dairy science. 79: 1627–1637.
Hugo, I., Flavio, A.P.S., Carla, M.M.B., Paulo, S.C. and Junio, C.M. (2010). Diet crude protein content and sources for lactating dairy cattle. Scientia Agricola(Piracicaba, Brazil). 67: 16-22.
Kammes, K.L. and Allen, M.S. (2012). Nutrient demand interacts with forage family to affect digestion responses in dairy cows. Journal of dairy science. 95: 3269–3287.
Korhonen, M., Vanhatalo, A. and Huhtanen, P. (2002). Effect of Protein Source on Amino Acid Supply, Milk Production, and Metabolism of Plasma Nutrients in Dairy Cows Fed Grass Silage.Journal of Dairy Science. 85: 3336–3351.
Kozloski, G.V., Cadorin, R.L., Harter, C.J., Oliveira, L., Alves, T.P., Mesquita, F.R. and Castagnino, D.S. (2009). Effect of suplemental nitrogen source and feeding frequency on nutrient supply to lambs fed a kikuyu grass hay-based diet. Small Ruminant Research. 81: 112-118
Kowsar, R., Ghorbani, G. R., Alikhani, M., Khorvash, M. and Nikkhah, A. (2008). Corn silage partially replacing short alfalfa hay to optimize forage use in total mixed rations for lactating cows.Journal of Dairy Science. 91: 4755–4764.
Mertens, D.R. (1994). Regulation of forage intake. In: Forage Quality, Evaluation, and Utilization. Fahey GC, Colins Jr M, Mertens DR and Moser LE. pp. 450–493.
National Research Council. NRC (2001). Nutrient Requirements of Dairy Cattle.7th rev. ed. Natl. Acad. Sci., Washington, DC.
Neal, K., Eun, J.S., Young, A.J., Mjoun, K. and Hall, J.O. (2014). Feeding protein supplements in alfalfa hay-based lactation diets improves nutrient utilization, lactational performance, and feed efficiency of dairy cows. Journal of Dairy Science. 97: 1–13.
Oba, M. and Allen, M.S. (1999). Evaluation of the importance of the digestibility of neutral detergent fiber from Forage: effects on dry matter intake and milk yield of dairy cows. Journal of Dairy Science. 82: 589–596.
Oelker, E.R., Reveneau, C. and Firkins, J.L. (2009). Interaction of molasses and monensin in alfalfa hay or corn silage-based diets on rumen fermentation, total tract digestibility, and milk production by Holstein cows.Journal of Dairy Science. 92: 270–285.
Reynal, S.M. and Broderick, G.A. (2003). Effects of feeding dairy cows protein supplements of varying ruminal degradabilities.Journal of Dairy Science. 86: 835–843.
Robinson, P.H., Gill, M. and Kennelly, J.J. (1996). Influence of Time of Feeding a Protein Meal on Ruminal Fermentation and Forestomach Digestion in Dairy Cows.Journal of Dairy Science. 80: 1366–1373
Robinson, P.H. and McQueen, R.E. (1994). Influence of supplemental protein source and feeding frequency on rumen fermentation and performance in dairy cows. Journal of Dairy Science. 77: 1340–1353.
SAS Institute. (2003). Qualification tools user’s guide.Sas 9.1. SAS Institute, Inc., Cary, NC, USA.
Van Keulen, J. and Young, B.A. (1977).Acid insoluble ash as a natural marker for digestibility studies.Journal of Dairy Science. 44: 282-287.
Van Soest, P.J. (1994). Nutritional Ecology of the Ruminant.2nd ed. Cornell University Press, Comstock Publications, New York, NY, USA, 476 pp.
Wattiaux, M.A., and Karg, K.L. (2004). Protein level for alfalfa and corn silage-based diets: I. Lactational response and milk urea nitrogen. Journal of Dairy Science. 87: 3480–3491.
Weiss, W.P., St-Pierre, N.R. and Willet, L.B. (2009). Varying type of forage, concentration of metabolizable protein, and source of carbohydrate affects nutrient digestibility and production by dairy cows. Journal of Dairy Science. 92: 5595–5606.
Wilson, J.R., and Hatfield, R.D. (1997). Structural and chemical changes of cell wall types during stem development: Consequences for fiber degradation by rumen microflora. Australian Journal of Agriculture Research. 48: 165–180.