Effect of barn airspace temperature on composition and technological parameters of bulk milk produced by dairy cows of Czech Fleckvieh and Holstein breeds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F16%3A43909676" target="_blank" >RIV/62156489:43210/16:43909676 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/26722861:_____/16:N0000094

Výsledek na webu

<a href="https://is.mendelu.cz/dok_server/slozka.pl?id=93694;lang=cz" target="_blank" >https://is.mendelu.cz/dok_server/slozka.pl?id=93694;lang=cz</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of barn airspace temperature on composition and technological parameters of bulk milk produced by dairy cows of Czech Fleckvieh and Holstein breeds

Popis výsledku v původním jazyce

On two farms (A and B), samples of bulk milk produced by dairy cows of the Holstein (H) and Czech Fleckvieh (CF) breeds were collected every week on the same day within the time interval of 32 weeks. The aim of this sampling was to determine the effect of barn airspace temperature on milk composition and its technological parameters. The following average values of all bulk milk samples (n = 64) were recorded: barn airspace temperature (BAT) 12.29 degrees C; rennet coagulation time (RCT) 211 sec.; curd quality class (CQC) 1.55; titratable acidity (TA) 7.16 degrees SH; protein content (P) 3.46%; fat content (F) 4.09%; lactose content (L) 4.78%; and solids non-fat (SNF) 8.85%. As compared with H, dairy cows of CF breed produced milk with statistically significantly higher (P < 0.01) contents of P (+0.28%), SNF (+0.27%) and statistically significant (P < 0.05) of TA. The remaining differences were statistically insignificant (P > 0.05): BAT; RCT; CQC; F and L. As far as the effect of temperature was concerned, calculated correlation coefficients and plotted graphs indicated a marked effect of BAT on RCT; F and P. This effect was in all cases markedly negative: at lower BAT, F and P values were higher and RCT longer while at higher temperatures they were lower and shorter. These trends were similar in both breeds regardless to differences in average values of aforementioned parameters.

Název v anglickém jazyce

Effect of barn airspace temperature on composition and technological parameters of bulk milk produced by dairy cows of Czech Fleckvieh and Holstein breeds

Popis výsledku anglicky

On two farms (A and B), samples of bulk milk produced by dairy cows of the Holstein (H) and Czech Fleckvieh (CF) breeds were collected every week on the same day within the time interval of 32 weeks. The aim of this sampling was to determine the effect of barn airspace temperature on milk composition and its technological parameters. The following average values of all bulk milk samples (n = 64) were recorded: barn airspace temperature (BAT) 12.29 degrees C; rennet coagulation time (RCT) 211 sec.; curd quality class (CQC) 1.55; titratable acidity (TA) 7.16 degrees SH; protein content (P) 3.46%; fat content (F) 4.09%; lactose content (L) 4.78%; and solids non-fat (SNF) 8.85%. As compared with H, dairy cows of CF breed produced milk with statistically significantly higher (P < 0.01) contents of P (+0.28%), SNF (+0.27%) and statistically significant (P < 0.05) of TA. The remaining differences were statistically insignificant (P > 0.05): BAT; RCT; CQC; F and L. As far as the effect of temperature was concerned, calculated correlation coefficients and plotted graphs indicated a marked effect of BAT on RCT; F and P. This effect was in all cases markedly negative: at lower BAT, F and P values were higher and RCT longer while at higher temperatures they were lower and shorter. These trends were similar in both breeds regardless to differences in average values of aforementioned parameters.

Druh

D - Stať ve sborníku

CEP obor

GG - Chov hospodářských zvířat

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Mendel and Bioclimatology: Conference Proceedings

ISBN

978-80-7509-397-4

ISSN

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e-ISSN

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Počet stran výsledku

12

Strana od-do

241-252

Název nakladatele

Mendelova univerzita v Brně

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

3. 9. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000382229900026