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Pelleted dried grass and rolled barley diets for lactating dairy cows

Published online by Cambridge University Press:  02 September 2010

H. A. A. Khalifa ,
J. H. D. Prescott  and
D. G. Armstrong
H. A. A. Khalifa
Affiliation:
School of Agriculture, The University, Newcastle upon Tyne
J. H. D. Prescott
Affiliation:
School of Agriculture, The University, Newcastle upon Tyne
D. G. Armstrong
Affiliation:
School of Agriculture, The University, Newcastle upon Tyne
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Summary

1. Pelleted grass and a concentrate containing 90% rolled barley and 10% soya bean meal were offered to cows in three combinations, 25: 75, 50: 50 and 75: 25 respectively, together with a constant low level of coarse roughage.

2. The experiment was carried out in two stages, in early lactation as a randomized block design involving 18 Jersey cows fed to appetite and in mid-lactation as a 3 × 3 Latin square change-over design involving 12 cows, rationed according to milk yield.

3. There were no significant between-treatment differences in either milk yield or milk fat content in either stage of the experiment.

Type
Research Article
Information
Animal Production , Volume 20 , Issue 1 , February 1975 , pp. 101 - 109
Copyright
Copyright © British Society of Animal Science 1975

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References

REFERENCES

American Society of Agricultural Engineers. 1967. Method of determining modulus of uniformity and modulus of fineness of ground feed. Yb. Am. Soc. agric. Engrs, p. 301.Google Scholar
Agricultural Research Council. 1965. The Nutrient Requirements of Farm Livestock.No. 2, Ruminants. Agricultural Research Council, London.Google Scholar
Baumgardt, B. R. 1969. Regulation of feed intake and energy balance. In Physiology of Digestion and Metabolism in the Ruminant (ed. Phillipson, A. T.), pp. 235–253Oriel Press, Newcastle upon Tyne.Google Scholar
Castle, M. E., Drysdale, A. D., Waite, R. and Watson, J. N. 1963. The effect of the replacement of concentrates by roots on the intake and production of dairy cows. J. Dairy Res. 30: 199–207.CrossRefGoogle Scholar
Chalupa, W., O'Dell, G. D., Kutches, A. J. and Lavker, R. 1970. Supplemental corn silage or baled hay for correction of milk fat depressions produced by feeding pellets as the sole forage. J. Dairy Sci. 53: 208–214.CrossRefGoogle Scholar
Connell, J. 1969. Supplementation of dried grass with barley straw. Rep. Natn. Inst. Res. Dairying, p. 46.Google Scholar
Connell, J. and Jones, J. G. W. 1968. The dried grass cube as a production concentrate for the dairy cow. Anim. Prod. 10: 231 (Abstr.).Google Scholar
Hadjipieris, G. and Holmes, W. 1966. Studies on feed intake and feed utilisation by sheep. 1. The voluntary intake of dry, pregnant and lactating ewes. J. agric. Sci., Camb. 66: 217–223.CrossRefGoogle Scholar
Hutton, J. B. 1963. The effect of lactation on intake in the dairy cow. Proc. N.Z. Soc. Anim. Prod. 23: 39–52.Google Scholar
Hutton, K. and Seeley, R. C. 1966. Rapid method for saponification of milk fat and subsequent quantitative estimation of the lower fatty acids. Nature, Lond. 212: 1614–1615.CrossRefGoogle Scholar
Khalifa, H. A. A. 1970. The use of high concentrate low roughage diets in dairy cow nutrition. Ph.D. Thesis, University of Newcastle upon Tyne.Google Scholar
Minson, D. J. 1962. The effect of grinding, pelleting and wafering on the feeding value of roughages, Anim. Res. Inst., Canada Dept. Agric, Rev. Cotttr. No. 84.Google Scholar
National Academy of Sciences — National Research Council. 1964. Joint United States-Canadian Tables of Feed Composition, Publ. NAS-NRC, No. 1232.Google Scholar
Neimann-Sørensen, A. 1969. In Crop Conservation and Grassland. Proc. 3rd Meeting Euro. Grassld Fedn, p. 105.Google Scholar
Prescott, J. H. D., El-shobokshy, A. S. and Armstrong, D. G. 1969. Ammonium salts of fatty acids for milk production. 1. The effect of feeding a salt solution containing ammonium acetate on the yield and composition of milk produced by Jersey cows fed hay/concentrate diets. Anim. Prod. 11: 195–204.Google Scholar
Snedecor, G. W. 1965. Statistical Methods. 7th edition. Iowa State University Press, Ames, la.Google Scholar
Treacher, T. T. 1970. Effect of nutrition in late pregnancy on subsequent milk production in ewes. Anim. Prod. 12: 23–38.Google Scholar