2019年1月1日 · Hyperketonemia (HYK) is one of the most frequent and costly metabolic disorders in high-producing dairy cows and its diagnosis is based on β-hydroxybutyrate (BHB) concentration in blood. In the last 10 years, the number of papers that have dealt with the impact of elevated BHB levels in dairy cattle has increased.

Hyperketonemia (HYK) is one of the most frequent and costly metabolic disorders in high-producing dairy cows and its diagnosis is based on β-hydroxybutyrate (BHB) concentration in blood. In the last 10 years, the number of papers that have dealt with the impact of elevated BHB levels in dairy cattle …

2017年9月26日 · 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%.

2017年3月1日 · We infused BHB into late-gestation and early-lactation dairy cows to investigate the effects of elevated plasma BHB concentrations on glucose, insulin, and glucagon.

Cow level testing: Post-calving BHB > 10 mg/dL is associated with a significant risk of post-calving metabolic or infectious diseases (displaced abomasum, clinical ketosis and metritis), decreased milk yield and decreased reproductive performance in individual TMR …

2016年11月1日 · β-Hydroxybutyrate (BHB) is an important indicator for metabolic disorders in dairy cows, such as ketosis and fatty liver. Dairy cows with ketosis display oxidative stress that may be associated with high levels of BHB.

The main circulating ketone bodies in the cow are BHB, acetone, and acetoacetate (AcAc), all of which may be used for on-farm ketosis detection (Duffield et al., 2009). Hyperketonemia (HYK) can be defined as blood or serum BHB concentration ≥1.2 mmol/L (Duffield, 2000).

2023年11月23日 · Subclinical ketosis is defined as a surplus of ketone bodies (acetone, acetoacetate and β-hydroxybutyrate (BHB)) in blood, but without clinical signs. Cows with HK have a higher risk to be removed from the herd, produce less milk, have a higher odds to develop diseases, have a lower reproductive performance (2, 3), and cause economic losses (4–6).

2022年2月15日 · Forty-nine Holstein Friesian dairy cows were enrolled between 15 and 30 days in milk. According to their serum BHB concentration, the animals were divided into three groups: Group 0 (G0; 12...

Hyperketonemia (HYK) is one of the most frequent and costly metabolic disorders in high-producing dairy cows and its diagnosis is based on β-hydroxybutyrate (BHB) concentration in blood. In the last 10 years, the number of papers that have dealt with the impact of elevated BHB levels in dairy cattle has increased.