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The feed intake of grazing cattle. II. The influence of size of animal on feed intake

Published online by Cambridge University Press:  01 October 1961

W. Holmes ,
J. G. W. Jones  and
R. M. Drake-Brockman
W. Holmes
Affiliation:
Wye College, University of London, Near Ashford, Kent
J. G. W. Jones
Affiliation:
Wye College, University of London, Near Ashford, Kent
R. M. Drake-Brockman
Affiliation:
Wye College, University of London, Near Ashford, Kent
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Extract

1. Two experiments each with 3 dry cows, 3 heifers and 3 calves were carried out in 1959 and 1960 under uniform continuous grazing conditions on a ryegrass-white clover sward to measure individual feed intake by the chromic oxide-faecal nitrogen method.

2. Estimates of digestibility were high (70–82% in organic matter) and there was evidence that calves selected a diet of higher digestibility than cows.

3. Mean daily estimates of organic matter intake were for cows (1300 lb. live-weight) 23·5 lb., for heifers (790 lb. live-weight) 20·8 lb. and for calves (450 lb. live-weight) 14·3 lb. Corresponding digestible organic matter intakes were 17·4, 15·3 and 11·0 lb.

4. Relationships between digestible organic matter intake and liveweight were calculated and the merits of the exponents 0·62 and 0·73 of liveweight discussed.

5. The results were compared with accepted cow equivalent standards and, regardless of the exponent chosen, agreed with the system which adopts higher values for young grazing cattle.

Type
Research Article
Information
Animal Production , Volume 3 , Issue 3 , October 1961 , pp. 251 - 260
Copyright
Copyright © British Society of Animal Science 1961

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References

REFERENCES

Alder, F. E., Tayler, J.C, Chambers, D. T., Richards, J. A., & Rudman, J. E., 1960. The herbage intake of beef cattle. Proc. 8th int. Grassl. Cong., 1960: 447.Google Scholar
Brody, S., 1945. Bioenergetics and Growth, p. 352 and p. 839. Reinhold Publishing Corporation, New York.Google Scholar
Clark, J., & Bessel, J. E., 1956. Profits from Dairy Farming. Imperial Chemical Industries, Central Agricultural Control, London. Bull. No. 7, p. 81.Google Scholar
Corbett, J. L., 1960. Faecal-index techniques for estimating herbage consumption by grazing animals. Proc. 8th int. Grassl. Cong., 1960: 438.Google Scholar
Corbett, J. L., Langlands, J. P., & Boyne, A. W., 1961. An estimate of energy expended for maintenance by strip-grazed dairy cows. VIII. int. Tierzucht Kong. Hamburg, 1961. Hauptberichte, p. 193.Google Scholar
Cox, C. P., Foot, A. S., Hosking, Z. D., Line, C, & Rowland, S. J., 1956. The direct evaluation of pasture in terms of the milk production of individually grazed cows. J.Brit. Grassl. Soc, 11: 107.Google Scholar
Evans, R. E., 1960. Rations for Livestock, p. 50. Min. Agric. Fish. Food Bull. No. 48. H.M.S.O., London.Google Scholar
Greenhalgh, J. F. D., Corbett, J. L., & Mcdonald, I., 1960. The indirect estimation of the digestibility of pasture herbage. II. Regressions of digestibility on faecal nitrogen concentration : their determination in continuous digestibility trials and the effect of various factors on their accuracy. J. agric. Sci., 55: 377.Google Scholar
Holmes, W., & Osman, H.El, S., 1960. The feed intake of grazing cattle. I. Feed intake of dairy cows on strip and free grazing. Anim. Prod., 2: 131.Google Scholar
Lancaster, R. J., 1950. The estimation of digestibility. Proc. N.Z. Soc. Anim. Prod., 10: 45.Google Scholar
Martin, C. M., Brannon, W. F., & Reid, J. T., 1955. Relationship of size of growing cattle to pasture intake and its use as an index of palatability. J. Dairy Sci., 38: 181.CrossRefGoogle Scholar
Ministry of Agriculture, Fisheries and Food, 1957. The Farm as a Business, p. 44. H.M.S.O., London.Google Scholar
Minson, D. J., Tayler, J. C, Alder, F. E., Raymond, W. F., Rudman, J. E., LINE, C, & Head, M. J., 1960. A method for identifying the faeces produced by individual cattle or groups of cattle grazing together. J. Brit. Grassl. Soc, 15: 86.CrossRefGoogle Scholar
Minson, D. J., & Kemp, C. D., 1961. Studies on the digestibility of herbage. IX. Herbage and faecal nitrogen as indicators of herbage organic matter digestibility. J. Brit. Grassl. Soc, 16: 76.Google Scholar
Reid, J. T., 1959. Pasture evaluation in relation to feed efficiency. Nutritional and Economic Aspects of Feed Utilisation by Dairy Cows, p. 135. Ed. Hoglund, C. R, Johnson, G. L., Lassiter, C. A. and McGilliard, L. D.. Iowa State College Press, Ames, Iowa.Google Scholar
Swift, R. W., & Bratzler, J. W., 1959. A comparison of the digestibility of forages by cattle and by sheep. Bull. Pa. agric Exp. Sta., No. 651.Google Scholar
Wallace, L. R., 1956. The intake and utilisation of pasture by grazing dairy cattle. Proc. 1th int. Grassl. Cong. 1956: 134.Google Scholar
Woodman, H. E., & Norman, D. B., 1932. Nutritive value of pasture. IX. The influence of intensity of grazing on the yield, composition and nutritive value of pasture herbage. J. agric. Sci., 22: 852.CrossRefGoogle Scholar
Wye, College (University of London), 1960. Guide to the Department of Agriculture and College Farm, 1960, p. 32. Wye College, near Ashford, Kent.Google Scholar