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A note on concentrate energy source for dairy cows in mid lactation

Published online by Cambridge University Press:  02 September 2010

B. K. Sloan ,
P. Rowlinson  and
D. G. Armstrong
B. K. Sloan
Affiliation:
Department of Agriculture
P. Rowlinson
Affiliation:
Department of Agriculture
D. G. Armstrong
Affiliation:
Department of Agricultural Biochemistry and Nutrition, The University, Newcastle upon Tyne NE1 7RU
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Extract

The forage: concentrate ratio in the diet is known to influence the fermentation characteristics in the rumen (Sudweeks, Ely, Mertens and Sisk, 1981). Increasing the proportion of concentrates in rations fed to dairy cows has been shown to narrow the acetate plus butyrate: propionate ratio in the rumen (Sutton, 1981) with an associated depression in milk fat concentration (Ørskov, Reid and McDonald, 1981). The magnitude of the effect, on milk yield and composition, of increasing the concentrate proportion in the ration has been shown to be dependent on feeding level (Sutton, 1981), and the number of meals of concentrate per day (Johnson, 1979) and also may be influenced by dietary protein level and source (Ørskov et al., 1981).

Type
Notes
Information
Animal Production , Volume 45 , Issue 2 , October 1987 , pp. 321 - 323
Copyright
Copyright © British Society of Animal Science 1987

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References

REFERENCES

Agricultural Development and Advisory Service. 1986. Condition scoring of dairy cows, P6J2. Ministry of Agriculture, Fisheries and Food, Pinner.Google Scholar
Bhattacharya, A. N. and Lubbadah, W. F. 1971. Feeding high levels of beet pulp in high concentrate dairy rations. Journal of Dairy Science 54: 95–99.Google Scholar
Castle, M. E., Gill, M. S. and Watson, J. N. 1981. Silage and milk production: a comparison between barley and dried sugar-beet pulp as silage supplements. Grass and Forage Science 36: 319–324.Google Scholar
Johnson, C. L. 1979. The effect of level and frequency of concentrate feeding on the performance of dairy cows of different yield potential. Journal of Agricultural Science, Cambridge 92: 743–751.Google Scholar
Mayne, C. S. and Gordon, F. J. 1984. The effect of type of concentrate and level of concentrate feeding on milk production. Animal Production 39: 65–76.Google Scholar
Ørskov, E. R., Reid, G. W. and McDonald, I. 1981. The effects of protein degradability and food intake on milk yield and composition in cows in early lactation. British Journal of Nutrition 45: 547–555.Google Scholar
Ronning, M. and Bath, D. L. 1962. Relative milk production value of barley, dried beet pulp, molassed dried beet pulp and concentrated Steffen filtrate dried beet pulp. Journal of Dairy Science 45: 854–857.Google Scholar
Sudweeks, E. M., Ely, L. D., Mertens, D. R. and Sisk, L. R. 1981. Assessing minimum amounts and form of roughages in ruminant diets: roughage value index system. Journal of Animal Science 53: 1406–1411.CrossRefGoogle Scholar
Sutton, J. D. 1981. Concentrate feeding and milk composition. In Recent Advances in Animal Nutrition 1981 (ed. Haresign, W.), pp. 35–48. Butterworths, London.CrossRefGoogle Scholar
Thomas, C., Aston, K., Daley, S. R. and Bass, J. 1986. Milk production from silage. 4. The effect of the composition of the supplement. Animal Production 42: 315–325.Google Scholar