Selection of models of lactation curves to use in milk production simulation systems

The objective of this study was to select models of lactation curves with a better adjustment to the observed data in models of milk production simulation systems. A data base on 6,459 recordings of daily milk production was used. These data were obtained from monthly and fortnightly controls of mil...

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Veröffentlicht in:Revista brasileira de zootecnia 2010-04, Vol.39 (4), p.891-902
Hauptverfasser: Cunha, Daniel de Noronha Figueiredo Vieira da(UFV Departamento de Zootecnia), Pereira, José Carlos(UFV Departamento de Zootecnia), Silva, Fabyano Fonseca e(UFV Departamento de Estatística), Campos, Oriel Fajardo de(PESAGRO-RJ), Braga, José Luis(UFV Departamento de Informática), Martuscello, Janaina Azevedo(UFV Departamento de Zootecnia)
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Sprache:eng
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Zusammenfassung:The objective of this study was to select models of lactation curves with a better adjustment to the observed data in models of milk production simulation systems. A data base on 6,459 recordings of daily milk production was used. These data were obtained from monthly and fortnightly controls of milk between 2004 and 2007, from 472 lactations of animals from ten different milking cow herd farms. Based on rolling averages of milk production (MP-L/day) per cow, the ten herd farms were divided into low (L < 15), medium (15
ISSN:1516-3598
1806-9290
1806-9290
1516-3598
DOI:10.1590/S1516-35982010000400026