Articles | Volume 62, issue 2
https://doi.org/10.5194/aab-62-491-2019
https://doi.org/10.5194/aab-62-491-2019
Original study
 | 
29 Jul 2019
Original study |  | 29 Jul 2019

Analysis of lactating cows on commercial Austrian dairy farms: the influence of genotype and body weight on efficiency parameters

Maria Ledinek, Leonhard Gruber, Franz Steininger, Birgit Fuerst-Waltl, Karl Zottl, Martin Royer, Kurt Krimberger, Martin Mayerhofer, and Christa Egger-Danner

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Cited articles

Bauman, D. E. and Currie, W. B.: Partitioning of nutrients during pregnancy and lactation: A review of mechanisms involving homeostasis and homeorhesis, J. Dairy Sci. 63, 1514–1529, https://doi.org/10.3168/jds.S0022-0302(80)83111-0, 1980. 
Becker, J. C., Heins, B. J., and Hansen, L. B.: Costs for health care of Holstein cows selected for large versus small body size, J. Dairy Sci., 95, 5384–5392, https://doi.org/10.3168/jds.2012-5344, 2012. 
Berry, D. P. and Pryce, J. E.: Feed efficiency in growing and mature animals, in: Proceedings of the 10th Word Congress of Genetics Applied to Livestock Production, Vancouver, Canada, 17–22 August 2014, 2014. 
Brown, C. A., Chandler, P. T., and Holter, B.: Development of predictive equations for milk yield and dry matter intake in lactating cows, J. Dairy Sci., 60, 1739–1754, https://doi.org/10.3168/jds.S0022-0302(77)84098-8, 1977. 
Buckley, F., Dillon, P., Crosse, S., Flynn, F., and Rath, M.: The performance of Holstein Friesian dairy cows of high and medium genetic merit for milk production on grass-based feeding systems, Livest. Prod. Sci., 64, 107–119, https://doi.org/10.1016/S0301-6226(99)00167-0, 2000. 
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Short summary
The aim of this study was to evaluate the influence of body weight on the efficiency of dairy cows. Data were derived from 161 commercial Austrian dairy farms. An optimum body weight range for efficiency does exist as the relationship of milk yield and body weight is nonlinear. Specialized dairy breeds seem to respond more intensively to body weight range than dual-purpose breeds. Cows with medium weights are the most efficient. A further increase in dairy cows’ body weights should be avoided.