caa a22 4500 606196501 CHVBK 20210128100924.0 cr unu---uuuuu 210128e20150901xx s 000 0 eng 10.1007/s10260-014-0288-1 doi (NATIONALLICENCE)springer-10.1007/s10260-014-0288-1 D-optimal experimental designs for a growth model applied to a Holstein-Friesian dairy farm [Elektronische Daten] [Santiago Campos-Barreiro, Jesús López-Fidalgo] The body mass growth of organisms is usually represented in terms of what is known as ontogenetic growth models, which represent the relation of dependence between the mass of the body and time. This paper discusses design issues of West's ontogenetic growth model applied to a Holstein-Friesian dairy farm in the northwest of Spain. D-optimal experimental designs were computed to obtain an optimal fitting of the model. A correlation structure has been included in the statistical model due to the fact that observations on a particular animal are not independent. The choice of a robust correlation structure is an important contribution of this paper; it provides a methodology that can be used for any correlation structure. The experimental designs undertaken provide a tool to control the proper weight of heifers, which will help improve their productivity and, by extension, the competitiveness of the dairy farm. Springer-Verlag Berlin Heidelberg, 2014 Body mass growth nationallicence D-optimal design nationallicence Efficiency nationallicence Information matrix nationallicence Nugget effect nationallicence Robustness nationallicence Campos-Barreiro Santiago Department of Mathematics, Institute of Mathematics Applied to Science and Engineering, University of Castilla-La Mancha, Avenida Camilo José Cela 3, 13071, Ciudad Real, Spain aut López-Fidalgo Jesús Department of Mathematics, Institute of Mathematics Applied to Science and Engineering, University of Castilla-La Mancha, Avenida Camilo José Cela 3, 13071, Ciudad Real, Spain aut Statistical Methods & Applications Springer Berlin Heidelberg 24/3(2015-09-01), 491-505 1618-2510 24:3<491 2015 24 10260 https://doi.org/10.1007/s10260-014-0288-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10260-014-0288-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Campos-Barreiro Santiago Department of Mathematics, Institute of Mathematics Applied to Science and Engineering, University of Castilla-La Mancha, Avenida Camilo José Cela 3, 13071, Ciudad Real, Spain aut NATIONALLICENCE 700 1- López-Fidalgo Jesús Department of Mathematics, Institute of Mathematics Applied to Science and Engineering, University of Castilla-La Mancha, Avenida Camilo José Cela 3, 13071, Ciudad Real, Spain aut NATIONALLICENCE 773 0- Statistical Methods & Applications Springer Berlin Heidelberg 24/3(2015-09-01), 491-505 1618-2510 24:3<491 2015 24 10260