Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

Znaleziono wyników: 6

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Beta-hydroxybutyrate in milk as screening test for subclinical ketosis in dairy cows

100%

Jezek J. , Cincovic M. R. , Nemec M. , Belic B. , Djokovic R. , Klinkon M. , Staric J.

Polish Journal of Veterinary Sciences

2017

tom 20

nr 3

Ketosis is a very frequent metabolic disease in dairy cows, resulting in lower milk production, impaired fertility and increased frequency of other diseases. The course of the disease is often subclinical, so early detection is very important. The aim of the study was to investigate the relation between the concentration of beta-hydroxybutyrate in blood and milk and to determine the cut-off value in milk for detection of subclinical ketosis. The study included 94 cows, which were in the first third of lactation. Beta-hydroxybutyrate (BHB) concentrations were measured in blood and milk serum using a biochemical analyser. The average concentration of BHB in the blood serum samples was 1.14 mmol/L while in the milk it was about ten times lower at 0.117 mmol/L. A statistically significant positive correlation between the concentration of BHB in blood and milk (r=0.705, p<0.001) was found. In cows with BHB in blood below 2.0 mmol/L a stronger correlation between blood and milk BHB was established (r=0.658, p<0.001) than in cows with blood BHB above 2.0 mmol/L (r=-0.292, p=0.206). Therefore, BHB in milk is a very suitable indicator in the diagnosis of subclinical ketosis as there is a good correlation between BHB in the blood and milk of cows with subclinical ketosis. The cut-off concentration of BHB in milk set at ≥0.080 mmol/L (AUC=0.91±0.03; p<0.001) is a significant indicator for subclinical ketosis in dairy cows. The sensitivity of the test was 94% and specificity 74%. Beta-hydroxybutyrate in milk is a good indicator of subclinical ketosis in dairy cows and can be measured accurately with a biochemical analyser.

Biological variations of hematologic and biochemical parameters in cows during early lactation

100%

Kovacevic V. , Cincovic M. R. , Belic B. , Dokovic R. , Lakic I. , Radinovic M. , Potkonjak A.

Polish Journal of Veterinary Sciences

2021

tom 24

nr 1

Effect of postpartum administration of ketoprofen on proinflammatory cytokine concentration and their correlation with lipogenesis and ketogenesis in Holstein dairy cows

100%

Kovacevic Z. , Stojanovic D. , Cincovic M. , Belic B. , Davidov I. , Stojanac N. , Galfi A.

Polish Journal of Veterinary Sciences

2019

tom 22

nr 3

Association of metabolic and inflammatory markers with milk yield in postpartum dairy cows treated with ketoprofen

100%

Kovacevic Z. , Stojanovic D. , Cincovic M. , Belic B. , Davidov I. , Plavsa N. , Radinovic M.

Polish Journal of Veterinary Sciences

2018

tom 21

nr 2

Variations in milk production based on the temperature-humidity index and blood metabolic parameters in cows during exposure to heat stress

100%

Majkic M. , Cincovic M. R. , Belic B. , Plavsa N. , Hristov S. , Stankovic B. , Popovic-Vranjes A.

Animal Science Papers and Reports

2018

tom 36

nr 4

Effect of postpartum administration of ketoprofen on proinflammatory cytokine concentration and their correlation with lipogenesis and ketogenesis in Holstein dairy cows

94%

Kovacevic Z. , Stojanovic D. , Cincovic M. , Belic B. , Davidov I. , Stojanac N. , Galfi A. , Kovacevic Z. , Stojanovic D. , Cincovic M. , Belic B. , Davidov I. , Stojanac N. , Galfi A.

Polish Journal of Veterinary Sciences

2019

nr 3