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The performance of dairy cows offered ensiled whole-crop wheat, urea-treated whole-crop wheat or sodium hydroxide-treated wheat grain and wheat straw in a mixture with grass silage

Published online by Cambridge University Press:  02 September 2010

J. D. Leaver  and
J. Hill
J. D. Leaver
Affiliation:
Wye College, University of London, Ashford, Kent TN25 5AH
J. Hill
Affiliation:
Wye College, University of London, Ashford, Kent TN25 5AH
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Abstract

Twenty-four Holstein Friesian cows in experiment 1 and 40 cows in experiment 2 were used over 12 weeks in continuous designs, to evaluate winter wheat as a forage for dairy cows. In experiment 1, whole-crop wheat was ensiled at 350 g dry matter (DM) per kg (EW) or harvested later and stored at 550 g DM per kg following treatment with 40 g urea per kg DM (40W). In addition to these treatments in experiment 2, whole-crop wheat of 550 g DM per kg treated with 20 g urea per kg DM (20W), and combine harvested wheat grain plus wheat straw (40: 60 ratio) treated with sodium hydroxide (SG) were also included. These whole-crop wheat forages were incorporated into the diet at a level of 400 g/kg of the forage DM in experiment 1, and 330 g/kg in experiment 2, with the remainder of the forage being grass silage. A control treatment of grass silage (GS) offered as the sole forage was also included. The forages were mixed in a mixer wagon and offered ad libitum. A fixed level of 8 kg/day of concentrates was offered in experiment 1 and 7 kg/day in experiment 2. Total DM intake was significantly greater for EW and 40W than for GS in experiment 1, but not in experiment 2. Milk yield was not significantly affected by diets (mean 28·8 kg/day in experiment 1 and 29·6 kg/day in experiment 2). Milk fat, protein and lactose contents and yields were also not significantly affected by diets. The additional total metabolizable energy (ME) intake of the whole-crop diets compared with GS was partitioned to live weight. There was no evidence of ME intakes being substantially greater than ME requirements as found in previous studies. A 5 × 5 Latin square digestibility experiment was carried out with Holstein-Friesian heifers offered the individual forages used in experiment 2. Intake was significantly greater for the urea-treated whole-crop wheat forages than for grass silage and for sodium hydroxide-treated grain and straw. The digestible organic matter in the dry matter (DOMD) of grass silage was 692 g/kg and the whole-crop wheat diets ranged from 626 g/kg for ensiled whole-crop wheat to 682 g/kg for the sodium hydroxide-treated grain plus straw (40: 60 ratio), with the DOMD of urea-treated whole-crop being intermediate. The results indicated that whole-crop wheat had higher intake characteristics than grass silage in spite of its lower digestibility.

Keywords

dairy cowsforagemilk productionureawheat
Type
Research Article
Information
Animal Science , Volume 61 , Issue 3 , December 1995 , pp. 481 - 489
Copyright
Copyright © British Society of Animal Science 1995

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References

Agricultural Research Council. 1980. The nutrient requirements of ruminant livestock. Commonwealth Agricultural Bureaux, Slough.Google Scholar
Castejon, M. and Leaver, J. D. 1994. Intake and digestibility of wholecrop wheat and liveweight gain by dairy heifers. Animal Feed Science and Technology 46: 1191–130.CrossRefGoogle Scholar
Deschard, G., Mason, V. C. and Tetlow, R. M. 1988. Treatment of wholecrop cereals with alkali. 4. Voluntary intake and growth in steers given wheat ensiled with sodium hydroxide, urea or ammonia. Animal Feed Science and Technology 19: 55–66.Google Scholar
Deschard, G., Tetlow, R. M. and Mason, V. C. 1987. Treatment of wholecrop cereals with alkali. 3. Voluntary intake and digestibility studies in sheep given immature wheat ensiled with sodium hydroxide, urea or ammonia. Animal Feed Science and Technology 18: 283–293.Google Scholar
Dowman, M. G. and Collins, F. C. 1982. The use of enzymes to predict the digestibility of animal feeds, Journal of the Science of Food and Agriculture 33: 689–696.CrossRefGoogle Scholar
Givens, D. I., Everington, J. M. and Adamson, A. H. 1989. The digestibility and ME content of grass silages and their prediction from laboratory measurements. Animal Feed Science and Technology 24: 27–43.CrossRefGoogle Scholar
Hill, J. and Leaver, J. D. 1991a. Effect of stage of growth and urea addition on the preservation and nutritive value of whole crop wheat. Animal Production 52: 606 (abstr.).Google Scholar
Hill, J. and Leaver, J. D. 1991b. Replacement of whole crop wheat by grass silage in the diet of dairy cows. Animal Production 52: 606 (abstr.).Google Scholar
Hill, J. and Leaver, J. D. 1992. Effect of protein supplementation on the digestibility of urea-treated whole crop wheat and on milk production by dairy cows. Animal Production 54: 449 (abstr.).Google Scholar
Kristensen, V. F. 1992. The production and feeding of wholecrop cereals and legumes in Denmark. In Wlwle-crop cereals. 2nd ed. (ed. Stark, B. A. and Wilkinson, J. M.), pp. 21–37. Chalcombe Publications, Canterbury.Google Scholar
Leaver, J. D. and Hill, J. 1992. Feeding cattle on wholecrop cereals. In Whole-crop cereals. 2nd ed. (ed. Stark, B. A. and Wilkinson, J. M.), pp. 59–69. Chalcombe Publications, Canterbury.Google Scholar
Phipps, R. H., Weller, R. F. and Siviter, J. W. 1992. Whole-crop cereals for dairy cows. In Whole-crop cereals, 2nd ed. (ed. Stark, B. A. and Wilkinson, J. M.), pp. 51–57. Chalcombe Publications, Canterbury.Google Scholar
Tetlow, R. M. 1992. A decade of research into whole-crop cereals at Hurley. In Whole-crop cereals, 2nd ed. (ed. Stark, B. A. and Wilkinson, J. M.), pp. 1–19. Chalcombe Publications, Canterbury.Google Scholar
Thomas, P. C., Robertson, S., Chamberlain, D. G., Livingstone, R. M., Garthwaite, P. H., Dewey, P. J. S. and Cole, D. J. A. 1988. Predicting the metabolisable energy content of compounded feeds for ruminants. In Recent advances in animal nutrition — 1988 (ed. Haresign, W. and Cole, D. J. A.), pp. 55–72. Butterworths, London.Google Scholar