Digitální knihovnaUPCE
 

Analysis in a time series of milk-yield production

Konferenční objektpeer-reviewedpostprint
Náhled

Datum publikování

2016

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

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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

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