Association of chosen environmental and animal factors with gestation length and lactation of dairy cows in two Slovak herds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F19%3A43917045" target="_blank" >RIV/62156489:43210/19:43917045 - isvavai.cz</a>

Výsledek na webu

<a href="https://mnet.mendelu.cz/mendelnet2019/mnet_2019_full.pdf" target="_blank" >https://mnet.mendelu.cz/mendelnet2019/mnet_2019_full.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Association of chosen environmental and animal factors with gestation length and lactation of dairy cows in two Slovak herds

Popis výsledku v původním jazyce

The aim of the study was to assess the effect of season of birth of females, their season of calving, as well as sex of calves and incidence of twins on the gestation length and milk yield during their first pregnancy and lactation. Data, 277 records, were collected from two farms located in northern and western Slovakia. The data in the herd &quot;A&quot; were collected in years 2006-2017, in the herd &quot;B&quot; in years 2014-2018. The herd &quot;A&quot; consisted of Slovak Spotted breed (127 records), the herd &quot;B&quot; consisted of black Holstein cows (150 records). Among observed environmental and animal factors were included: season of birth, season of calving, sex of the offspring and incidence of twins. Factor that reached at least to some degree statistical significance in relation to gestation length was season of calving in the both herds (P &lt; 0.03; P &lt; 0.06). 305-d milk yield tended to be influenced by season of calving (P &lt; 0.09). Impact of season of calving on gestation length differed between studied herds. The herd &quot;A&quot; reached longest average gestation length at spring calving (286.66 +- 3.26 days), the herd &quot;B&quot; at autumn calving (278.49 +- 1.35 days). In the herd &quot;A&quot; calving season was associated with the highest milk production in summer (5876 +- 380 kg), however in the herd &quot;B&quot;, the most productive milk yield was reached in spring (9865 +- 269 kg). The physiological mechanisms of these changes are not clear, hence more research in larger scale is needed.

Název v anglickém jazyce

Association of chosen environmental and animal factors with gestation length and lactation of dairy cows in two Slovak herds

Popis výsledku anglicky

The aim of the study was to assess the effect of season of birth of females, their season of calving, as well as sex of calves and incidence of twins on the gestation length and milk yield during their first pregnancy and lactation. Data, 277 records, were collected from two farms located in northern and western Slovakia. The data in the herd &quot;A&quot; were collected in years 2006-2017, in the herd &quot;B&quot; in years 2014-2018. The herd &quot;A&quot; consisted of Slovak Spotted breed (127 records), the herd &quot;B&quot; consisted of black Holstein cows (150 records). Among observed environmental and animal factors were included: season of birth, season of calving, sex of the offspring and incidence of twins. Factor that reached at least to some degree statistical significance in relation to gestation length was season of calving in the both herds (P &lt; 0.03; P &lt; 0.06). 305-d milk yield tended to be influenced by season of calving (P &lt; 0.09). Impact of season of calving on gestation length differed between studied herds. The herd &quot;A&quot; reached longest average gestation length at spring calving (286.66 +- 3.26 days), the herd &quot;B&quot; at autumn calving (278.49 +- 1.35 days). In the herd &quot;A&quot; calving season was associated with the highest milk production in summer (5876 +- 380 kg), however in the herd &quot;B&quot;, the most productive milk yield was reached in spring (9865 +- 269 kg). The physiological mechanisms of these changes are not clear, hence more research in larger scale is needed.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

40201 - Animal and dairy science; (Animal biotechnology to be 4.4)

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

MendelNet 2019: Proceedings of International PhD Students Conference

ISBN

978-80-7509-688-3

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

153-157

Název nakladatele

Mendelova univerzita v Brně

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

6. 11. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000576735500027