Relationships between milk ketone bodies and selected milk indicators during conventional and extended lactation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722861%3A_____%2F24%3AN0000005" target="_blank" >RIV/26722861:_____/24:N0000005 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60076658:12220/24:43908459

Výsledek na webu

<a href="https://jcea.agr.hr/articles/771712_Relationships_between_milk_ketone_bodies_and_selected_milk_indicators_during_conventional_and_extended_lactation_en.pdf" target="_blank" >https://jcea.agr.hr/articles/771712_Relationships_between_milk_ketone_bodies_and_selected_milk_indicators_during_conventional_and_extended_lactation_en.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5513/JCEA01/25.1.4095" target="_blank" >10.5513/JCEA01/25.1.4095</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Relationships between milk ketone bodies and selected milk indicators during conventional and extended lactation

Popis výsledku v původním jazyce

During lactation, dairy cows undergo various metabolic changes that are reflected not only in milk yield but also in milk composition. This study aimed to determine the milk performance and composition depending on the stage of lactation and describe relationships between energy metabolism indicators (ketone bodies: β-hydroxybutyrate (BHB), acetone) in milk and selected indicators of milk performance and composition. The study was conducted on 1,909 dairy cows (Holstein, Czech Fleckvieh, and their crossbreds), which were divided into four groups according to the stage of lactation (early (6-100 days in milk), mid (101-200 days), late (201-305 days), and extended (>305 days)). The obligatory dynamics of the main milk components were found during the entire lactation, i.e., an increase in the protein content (from 3.30 to 3.76 g/100 g) and fat content (from 4.25 to 4.42 g/100 g) and a decrease in the lactose content (from 5.06 to 4.91 g/100 g). Significantly higher (P < 0.001) contents of ketone bodies were found in early and extended lactation than in mid and late lactation. The effect of lipomobilization on milk fat composition is documented by positive correlation coefficients between ketone bodies and long-chain fatty acids (FAs) and medium-chain FAs and negative correlation coefficients between ketone bodies and short-chain FAs. Positive correlation coefficients were calculated between ketone bodies and milk fat, citric acid, fat-to-protein ratio, and somatic cell score, and negative correlation coefficients were calculated between ketone bodies and milk protein, lactose, and free FAs. Our results demonstrate that currently often realized extended lactation in high-yielding dairy cows is similarly demanding as early lactation regarding energy metabolism and, thus, milk composition changes.

Název v anglickém jazyce

Relationships between milk ketone bodies and selected milk indicators during conventional and extended lactation

Popis výsledku anglicky

During lactation, dairy cows undergo various metabolic changes that are reflected not only in milk yield but also in milk composition. This study aimed to determine the milk performance and composition depending on the stage of lactation and describe relationships between energy metabolism indicators (ketone bodies: β-hydroxybutyrate (BHB), acetone) in milk and selected indicators of milk performance and composition. The study was conducted on 1,909 dairy cows (Holstein, Czech Fleckvieh, and their crossbreds), which were divided into four groups according to the stage of lactation (early (6-100 days in milk), mid (101-200 days), late (201-305 days), and extended (>305 days)). The obligatory dynamics of the main milk components were found during the entire lactation, i.e., an increase in the protein content (from 3.30 to 3.76 g/100 g) and fat content (from 4.25 to 4.42 g/100 g) and a decrease in the lactose content (from 5.06 to 4.91 g/100 g). Significantly higher (P < 0.001) contents of ketone bodies were found in early and extended lactation than in mid and late lactation. The effect of lipomobilization on milk fat composition is documented by positive correlation coefficients between ketone bodies and long-chain fatty acids (FAs) and medium-chain FAs and negative correlation coefficients between ketone bodies and short-chain FAs. Positive correlation coefficients were calculated between ketone bodies and milk fat, citric acid, fat-to-protein ratio, and somatic cell score, and negative correlation coefficients were calculated between ketone bodies and milk protein, lactose, and free FAs. Our results demonstrate that currently often realized extended lactation in high-yielding dairy cows is similarly demanding as early lactation regarding energy metabolism and, thus, milk composition changes.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

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

Projekt

<a href="/cs/project/QK21010326" target="_blank" >QK21010326: Možnosti ovlivňování výskytu inhibičních látek v mléce jako účinný nástroj vedoucí k podpoře zdraví zvířat a ke zvyšování kvality a bezpečnosti potravin</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Journal of Central European Agriculture

ISSN

1332-9049

e-ISSN

—

Svazek periodika

25

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

1–12

Kód UT WoS článku

001197312300004

EID výsledku v databázi Scopus

2-s2.0-85188958596