Analysis in a time series of milk-yield production
Konferenční objektOtevřený přístuppeer-reviewedpostprintSoubory
Datum publikování
2016
Autoři
Marek, Jaroslav
Haloun, Tomáš
Rajmon, Radko
Kršíková, Martina
Vedoucí práce
Oponent
Název časopisu
Název svazku
Vydavatel
Technická univerzita v Liberci
Abstrakt
Monitoring of milk yield is used as a tool for the operative management of individual cows as well as management at the herd level. Nevertheless, sometimes a general knowledge of the significance of a particular problem is not sufficient for appropriate managerial decisions and a need arises to weigh up the impact of particular disorder on a particular herd. Than it is necessary to evaluate animal data from a longer period, different lactation order etc. The aim of the introduced research is to present methods for comparing the milk yield of cows in different epochs. The data from selected Holstein dairy herds in the Czech Republic from an 8-year period was used as a model. Several statistical hypotheses (zero trend, absence of seasonal variation) were being tested. The results indicated a requirement to consider the relationship between labour date and milk production. Our statistical analysis enabled us to draw up a table of milk-yield indices showing the average changes in 305-day yield values among lactations and years.
Rozsah stran
p. 248-253
ISSN
Trvalý odkaz na tento záznam
Projekt
SGS_2016_025/Aplikace a popularizace matematických modelů
Zdrojový dokument
Mathematical Methods in Economics 2016 (MME 2016) : proceedings
Vydavatelská verze
http://mme2016.tul.cz/conferenceproceedings/mme2016_conference_proceedings.pdf
Přístup k e-verzi
open access
Název akce
Mathematical Methods in Economics 2016 (MME 2016) (07.09.2016 - 09.09.2016)
ISBN
978-80-7494-296-9
Studijní obor
Studijní program
Signatura tištěné verze
Umístění tištěné verze
Přístup k tištěné verzi
Klíčová slova
Analysis of Time-series, Statistical model for description of milk production, milk-yield indexes, Nonlinear regression, Approximation of lactation curve by Wood function, Analýza časové řady, statistický model pro popis mléčné produkce, indexy dojivosti, neline8rn9 regrese, aproximace laktační křivky Woodovou funkcí