Comparative overview of some computer models in dairy cattle nutrition | Uporedni prikaz nekih računarskih modela za ishranu muznih krava
2008
Grubić, G., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Božičković, A., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Stojanović, B., Poljoprivredni fakultet, Beograd - Zemun (Serbia) | Đorđević, N., Poljoprivredni fakultet, Beograd - Zemun (Serbia)
The aim of this work was to compare different computer models for dairy cow nutrition considering that they were not tested in our country. The used software packages were found on the Internet in the form of trial (demo) versions, and the NRC (2001) model was used. The data from the actual milk production were collected on the Padinska Skela farm, which is a part of PKB (Serbia). The total feedstuffs intake was recorded for one barn, the animal record was taken, also the daily milk production, analyses of feedstuffs and milk, and meteorological data. These real numbers were used as an input for computer models in order to see how successfully they predict the production. The following models were used: 1)NRC, 2001; 2) CNCPS v. 5.0; 3) AMTS.Cattle; 4) CPM-Dairy Beta v3; 5) RationPRO MVP; 6) CamDairy 2002; 7) RUMNUT. There were some differences between models in prediction of milk production, although their prediction of the possible dry matter intake was precise and analogous for all models. The NRC model most closely predicted the milk production. It can be concluded that the models investigated showed high level of similarity when used to predict real production on our farm, although we still do not have all the required data about feedstuffs used in our farms.
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