The effect of milk yield on conversion coefficients between lactations of Czech Fleckvieh cows

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F14%3A00228939" target="_blank" >RIV/62156489:43210/14:00228939 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

čeština

Název v původním jazyce

The effect of milk yield on conversion coefficients between lactations of Czech Fleckvieh cows

Popis výsledku v původním jazyce

The number of lactations of dairy cows has a high influence on milk production,especially in first three lactations. The observation was carried out in the group of 8144 cows with 75-100% proportion of Czech Fleckvieh cattle in genotype. All cows finished the first three lactations. The total mean milk yield was 6154.45 kg in the first lactation, 7208.32 kg in the second lactation and 7506.72 kg in the third lactation. The coefficient for calculation of the milk yield for 1st, 2nd and 3rd lactation were1.17; 1.22 and 1.04 respectively. For detailed evaluation of the influence of the estimation coefficients between first three lactations the herd was divided into five groups according to the milk yield in the first lactation (up to 4000 kg, 4001-5000 kg, 5001-6000 kg, 6001-7000 kg and over 7000 kg). For each group the estimation coefficients were calculated. The estimation coefficients between lactations decreased with increasing yield in the first lactation. It was in all cases statis

Název v anglickém jazyce

The effect of milk yield on conversion coefficients between lactations of Czech Fleckvieh cows

Popis výsledku anglicky

The number of lactations of dairy cows has a high influence on milk production,especially in first three lactations. The observation was carried out in the group of 8144 cows with 75-100% proportion of Czech Fleckvieh cattle in genotype. All cows finished the first three lactations. The total mean milk yield was 6154.45 kg in the first lactation, 7208.32 kg in the second lactation and 7506.72 kg in the third lactation. The coefficient for calculation of the milk yield for 1st, 2nd and 3rd lactation were1.17; 1.22 and 1.04 respectively. For detailed evaluation of the influence of the estimation coefficients between first three lactations the herd was divided into five groups according to the milk yield in the first lactation (up to 4000 kg, 4001-5000 kg, 5001-6000 kg, 6001-7000 kg and over 7000 kg). For each group the estimation coefficients were calculated. The estimation coefficients between lactations decreased with increasing yield in the first lactation. It was in all cases statis

Druh

D - Stať ve sborníku

CEP obor

GG - Chov hospodářských zvířat

OECD FORD obor

—

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

MendelNet 2014 - Proceedings of International PhD Students Conference

ISBN

978-80-7509-174-1

ISSN

—

e-ISSN

—

Počet stran výsledku

4

Strana od-do

134-137

Název nakladatele

Mendel University in Brno

Místo vydání

Brno, Czech Republic

Místo konání akce

Brno, Czech Republic

Datum konání akce

19. 11. 2014

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

—