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Production characteristics of high-yielding dairy cows

Published online by Cambridge University Press:  02 September 2010

D. R. Neilson ,
C. T. Whittemore ,
M. Lewis ,
J. C. Alliston ,
D. J. Roberts ,
L. S. Hodgson-Jones ,
J. Mills ,
H. Parkinson  and
J. H. D. Prescott
D. R. Neilson
Affiliation:
Edinburgh School of Agriculture, West Mains Road, Edinburgh EH9 3JG
C. T. Whittemore
Affiliation:
Edinburgh School of Agriculture, West Mains Road, Edinburgh EH9 3JG
M. Lewis
Affiliation:
Edinburgh School of Agriculture, West Mains Road, Edinburgh EH9 3JG
J. C. Alliston
Affiliation:
Edinburgh School of Agriculture, West Mains Road, Edinburgh EH9 3JG
D. J. Roberts
Affiliation:
Edinburgh School of Agriculture, West Mains Road, Edinburgh EH9 3JG
L. S. Hodgson-Jones
Affiliation:
Edinburgh School of Agriculture, West Mains Road, Edinburgh EH9 3JG
J. Mills
Affiliation:
Edinburgh School of Agriculture, West Mains Road, Edinburgh EH9 3JG
H. Parkinson
Affiliation:
Edinburgh School of Agriculture, West Mains Road, Edinburgh EH9 3JG
J. H. D. Prescott
Affiliation:
Edinburgh School of Agriculture, West Mains Road, Edinburgh EH9 3JG
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Abstract

Understanding the relationships between food intake, milk output and body condition in high-yielding dairy cows is crucial in determining suitable management strategies. During two winter feeding periods 38 and 37 cows were individually fed, to appetite, complete diets which on average contained 11·7 MJ metabolizable energy per kg dry matter and comprised grass silage, concentrate meal and brewers' grains (draff). The groups' mean 305-day yield was 7 240 kg (s.d. 1 281) with 42 g (s.d. 4·3) fat per kg. Regression analysis was carried out to describe dry-matter intake both for 26 weeks post calving and for four successive 6-week periods from calving. The final equations, which had a residual s.d. of 0·07 to 0·10 of the observed intake, included milk yield, cow size and a measure of body-condition change. The cows were divided into three groups (high, medium and low) on two criteria: (1) mean milk yield (MJ/day) during the first 26 weeks of lactation and (2) post-calving backfat index determined ultrasonically. Differences were found between milk-yield groups from gross efficiency (milk yield (MJ)/energy intake (MJ metabolizable energy)) (P < 0·001), mean metabolizable energy intake (MJ/day) (P < 0·01), dry-matter intake as a proportion of live weight (P < 0·05), and post calving live weight (kg) (P < 0·05). Differences were found between backfat-index groups for maximum backfat loss and loss to day 42 (P < 0·001); also for mean live weight during the 26 weeks and post calving live weight (P < 0·001), dry-matter intake as a proportion of live weight (P < 0·05) and lactation number (P < 0·05). Interactions were found between the milk yield groups and backfat groups for milk yield (P < 0·01) and gross efficiency (P < 0·05) with the fattest group containing the highest and lowest yields and efficiencies.

Type
Research Article
Information
Animal Production , Volume 36 , Issue 3 , June 1983 , pp. 321 - 334
Copyright
Copyright © British Society of Animal Science 1983

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References

REFERENCES

Agricultural Research Council. 1980. The Nutrient Requirements of Ruminant Livestock. Commonwealth Agricultural Bureaux, Slough.Google Scholar
Bines, J. A. 1976. Regulation of food intake in dairy cows in relation to milk production. Livest. Prod. Sci. 3: 115–128.CrossRefGoogle Scholar
Broadbent, P. J.McIntosh, J. A. R. and Spence, A. 1970. The evaluation of a device for feeding group-housed animals individually. Anim. Prod. 12: 245–252.Google Scholar
Broster, W. H. 1972. Effect on milk yield of the cow of the level of feeding during lactation. Dairy Sci. Abstr. 34: 265–288.Google Scholar
Broster, W. H. and Alderman, G. 1977. Nutrient requirements of the high yielding cow. Livest. Prod. Sci. 4: 263–275.CrossRefGoogle Scholar
Brown, C. A., Chandler, P. T. and Holter, J. B. 1977. Development of predictive equations for milk yield and dry matter intake in lactating cows. J. Dairy Sci. 60: 1739–1754.CrossRefGoogle Scholar
Frood, M. J. and Croxton, D. 1978. The use of condition-scoring in dairy cows and its relationship with milk yield and live weight. Anim. Prod. 27: 285–291.Google Scholar
Garnsworthy, P. C. and Topps, J. H. 1981. Food intake in dairy cows in relation to body condition at calving and subsequent performance. Anim. Prod. 32: 392 (Abstr.).Google Scholar
Land, Carolyn and Leaver, J. D. 1981. The effect of body condition at calving on the production of Friesian cows and heifers. Anim. Prod. 32: 362–363 (Abstr.).Google Scholar
Larsen, L. H. and Eskedal, H. W. 1952. Feeding of high yielding dairy cows. Experiments on Stersbygard and on Wedellsborg Estate. Beretn. Forsøgslab. 260.Google Scholar
Lawes Agricultural Trust. 1980. Genstat v. Mark 4-03. Rothamsted Experimental Station.Google Scholar
Lowman, B. G., Scott, N. and Somerville, S. 1973. Condition scoring of cattle. Bull. E. Scotl. Coll. Agric., No. 6.Google Scholar
Moe, P. W., Tyrrell, H. F. and Flatt, W. P. 1971. Energetics of body tissue mobilization. Dairy Sci. 54: 548–553.CrossRefGoogle ScholarPubMed
Poole, D. A. 1982. The effect of milking cows three times daily. Anim. Prod. 34: 197–201.Google Scholar
Vadiveloo, J. and Holmes, W. 1979. The prediction of voluntary feed intake of dairy cows. J. agric. Sci., Camb. 93: 553–562.CrossRefGoogle Scholar
Van Es, A. J. H. 1976. Factors influencing the efficiency of energy utilization by beef and dairy cattle. In Principles of Cattle Production (ed. Swan, H. and Broster, W. H.), pp. 237–253. Butterworth, London.Google Scholar
Wiktorsson, H. 1979. General plane of nutrition for dairy cows. In Feeding Strategy for the High Yielding Dairy Cow (ed. Broster, W. H. and Swan, H.), pp. 148–170. Granada Publishing, London.Google Scholar
Wiktorsson, H. 1980. Potential of the cow. In Feeding Strategies for Dairy Cows (ed. Broster, W.H., Johnson, C. L. and Tayler, J. C.), pp. 41–412. Agricultural Research Council, London.Google Scholar
Wood, P. D. P. 1967. Algebraic model of the lactation curve in cattle. Nature, Lond. 216: 164–165.CrossRefGoogle Scholar
Wood, P. D. P. 1979. A simple model of lactation curves for milk yield, food requirement and body weight. Anim. Prod. 28: 55–63.Google Scholar
Wood, P. D. P. 1980a. A note on the lactation curves of some high-yielding British Friesian cows. Anim. Prod. 30: 299–302.Google Scholar
Wood, P. D. P. 1980b. Breed variations in the shape of the lactation curve of cattle and their implications for efficiency. Anim. Prod. 31: 133–141.Google Scholar
Wood, P. D. P., King, J. O. L. and Youdan, P. G. 1980. Relationships between size, live-weight change and milk production characters in early lactation in dairy cattle. Anim. Prod. 31: 143–151.Google Scholar