Effect of season and herd on rennet coagulation time and other parameters of milk technological quality in holstein dairy cows

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F11%3A00175881" target="_blank" >RIV/62156489:43210/11:00175881 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of season and herd on rennet coagulation time and other parameters of milk technological quality in holstein dairy cows

Popis výsledku v původním jazyce

In five herds of purebred Holstein dairy cows, altogether 220 bulk milk samples were collected with the following average parameters: rennet coagulation time (RCT) 265.2 sec., titratable acidity 6.40 °SH, active acidity 6.72 pH, specific density 1.0281 kg.l--1, fat content 3.81 g.100g--1, protein content 3.28 g.100g--1, lactose content 4.72 g.100g--1, and content of solids non-fat content 8.89 g.100g--1; average values of milk batch volume per herd and diurnal air temperature were 6,072 kg and 8.02 °C,respectively. It was found out that the variable "season" (spring, summer, autumn or winter) significantly influenced nearly all parameters under study (the only exceptions were values of titratable acidity and milk batch volume). As compared with all other seasons, the significantly shortest RCT was recorded in summer. Further it was also found out that the variable "herd" influenced all parameters with the exception of average diurnal air temperature. Regardless to differences existing

Název v anglickém jazyce

Effect of season and herd on rennet coagulation time and other parameters of milk technological quality in holstein dairy cows

Popis výsledku anglicky

In five herds of purebred Holstein dairy cows, altogether 220 bulk milk samples were collected with the following average parameters: rennet coagulation time (RCT) 265.2 sec., titratable acidity 6.40 °SH, active acidity 6.72 pH, specific density 1.0281 kg.l--1, fat content 3.81 g.100g--1, protein content 3.28 g.100g--1, lactose content 4.72 g.100g--1, and content of solids non-fat content 8.89 g.100g--1; average values of milk batch volume per herd and diurnal air temperature were 6,072 kg and 8.02 °C,respectively. It was found out that the variable "season" (spring, summer, autumn or winter) significantly influenced nearly all parameters under study (the only exceptions were values of titratable acidity and milk batch volume). As compared with all other seasons, the significantly shortest RCT was recorded in summer. Further it was also found out that the variable "herd" influenced all parameters with the exception of average diurnal air temperature. Regardless to differences existing

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GG - Chov hospodářských zvířat

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis

ISSN

1211-8516

e-ISSN

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Svazek periodika

59

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

6

Strana od-do

113-118

Kód UT WoS článku

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EID výsledku v databázi Scopus

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