Analysis of barn cooling fan setting influence on the dairy cows lying behavior

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Analysis of barn cooling fan setting influence on the dairy cows lying behavior

Popis výsledku v původním jazyce

This work is targeted on the influence of switching temperature of barn fans on the dairy cows behavior. The 128 cows of Czech fleckvieh-simmental cattle in total were involved to this experiment. The experiment took place on private farm in Pyšel and lasted from July to September of 2017. The data for this paper were collected by observation of subject inside the barn. The observation determined the overall time of lying in stable. According to the time which cows lied, the welfare can be evaluated. The switching temperature of fans was set to 24 oC and 26 oC. according to the switching temperature, two groups of cows were observated. Later, the differences between these two temperatures was established and corellated to the temperature itself. The weak relationships were discovered between amount of hours spend lying and mean temperature (r = -0.017 for 24 oC; 0.006 for 26 oC; P = 0.05). These results suggest, that the switching temperature of the fan had very little effect on the amount of hours, that cows spend lying down. Although, a negative relationship for switching temperature 24 oC can be observed. This can mean, that when the fan switching temperature is set to 24 oC, mean temperature has larger impact on the behavior and welfare. Higher fan switching temperature (26 oC) may have lower impact, because of the higher level of heat stress already present in cattle. This could be supported by the fact, that cows in 26 oC group spend less hours lying down in average (0.434 hour) than the 24 oC group.

Název v anglickém jazyce

Analysis of barn cooling fan setting influence on the dairy cows lying behavior

Popis výsledku anglicky

This work is targeted on the influence of switching temperature of barn fans on the dairy cows behavior. The 128 cows of Czech fleckvieh-simmental cattle in total were involved to this experiment. The experiment took place on private farm in Pyšel and lasted from July to September of 2017. The data for this paper were collected by observation of subject inside the barn. The observation determined the overall time of lying in stable. According to the time which cows lied, the welfare can be evaluated. The switching temperature of fans was set to 24 oC and 26 oC. according to the switching temperature, two groups of cows were observated. Later, the differences between these two temperatures was established and corellated to the temperature itself. The weak relationships were discovered between amount of hours spend lying and mean temperature (r = -0.017 for 24 oC; 0.006 for 26 oC; P = 0.05). These results suggest, that the switching temperature of the fan had very little effect on the amount of hours, that cows spend lying down. Although, a negative relationship for switching temperature 24 oC can be observed. This can mean, that when the fan switching temperature is set to 24 oC, mean temperature has larger impact on the behavior and welfare. Higher fan switching temperature (26 oC) may have lower impact, because of the higher level of heat stress already present in cattle. This could be supported by the fact, that cows in 26 oC group spend less hours lying down in average (0.434 hour) than the 24 oC group.

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

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Animal Breeding 2019

ISBN

978-80-7509-641-8

ISSN

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e-ISSN

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Počet stran výsledku

7

Strana od-do

67-73

Název nakladatele

Mendelova univerzita v Brně

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

6. 2. 2019

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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