Validation of Calibration Equations Developed ... - Automatic Milking
Validation of Calibration Equations Developed ... - Automatic Milking
Validation of Calibration Equations Developed ... - Automatic Milking
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
References<br />
Andersen & Due (2010): Produktionsøkonomi Kvæg 2010. Eds.: J.T. Andersen & K.P. Due.<br />
Knowledge Centre for Agriculture - Cattle, Aarhus, Denmark, p. 49 and 53<br />
Davies, D.A., M. Fothergill & D. Jones (1989): Frequency <strong>of</strong> stocking rate adjustments<br />
required on contrasting upland perennial ryegrass pasture continuously grazed to a sward<br />
height criterion from May to July. Grass and Forage Science 44:213-221<br />
Douglas, J.T. & C.E. Crawford (1994): An evaluation <strong>of</strong> the drop-disc technique for<br />
measurements <strong>of</strong> herbage production in ryegrass for silage. Grass and Forage Science<br />
49:252-255<br />
Gallegos, E.C., B.V. de la Mora & J.J. Rodriguez (2009): Relationship between standing dry<br />
matter and plant height in grasses native to the Mexican tropics. Tecnica Pecuaria en Mexico<br />
47(1):79-92<br />
Hansson, L. (2011): Herbage dry matter mass <strong>of</strong> pastures estimated through measures <strong>of</strong><br />
sward height. Master’s thesis, University <strong>of</strong> Copenhagen, Denmark. Submitted: 2011-08-01<br />
Kristensen, T. (2011): Personal communication. Senior scientist. Aarhus University, Blichers<br />
Allee 20, 8830 Tjele, Denmark.<br />
Lopez Diaz, J.E. & A. Gonzalez-Rodriguez (2003): Measuring grass yield by non-destructive<br />
methods. In: Optimal forage systems for animal production and the environment. Eds.: A.<br />
Kirilov, N. Todorov & I. Katerov. Proceedings <strong>of</strong> the 12th Symposium <strong>of</strong> the European<br />
Grassland Federation, May 2003, Pleven, Bulgaria. Grassland Science in Europe 8:569-572<br />
Michell, P. & R.V. Large (1983): The estimation <strong>of</strong> herbage mass <strong>of</strong> perennial ryegrass<br />
swards: a comparative evaluation <strong>of</strong> a rising-plate meter and a single-probe capacitance<br />
meter calibrated at and above ground level. Grass and Forage Science 38:295-299<br />
R Development Core Team (2009). R: A language and environment for statistical computing<br />
[computer s<strong>of</strong>tware]. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-<br />
900051-07-0, URL http://www.R-project.org<br />
Robel, R.J., J.N. Briggs, A.D. Dayton & L.C. Hulbert (1970): Relationships between visual<br />
obstruction measurements and weight <strong>of</strong> grassland vegetation. Journal <strong>of</strong> Range<br />
Management 23:295-297<br />
Sanderson, M.A., C.A. Rotz, S.W. Fultz & E.B. Rayburn (2001): Estimating forage mass with a<br />
commercial capacitance meter, rising plate meter, and pasture ruler. Agronomy Journal<br />
93:1281-1286<br />
15