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1

Changes in selected biochemical parameters (including FGF21) during subclinical and clinical ketosis in dairy cows

100%
Chen Y., Dong Z., Li R., Xu C.
Medycyna Weterynaryjna
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2018
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tom 74
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nr 11
Negative energy balance (NEB) is a common pathological cause of ketosis. As the major organs of lipid metabolism, the liver and fat tissue take part in regulating lipid oxidative capacity and energy demands, which is also a key metabolic pathway that regulates NEB development during the perinatal period. Fibroblast Growth Factor 21 (FGF21) is a novel metabolic regulator involved in the control of fatty acid oxidation and lipid metabolism during a prolonged negative energy balance. Our study determined a correlation between serum FGF21 and β-hydroxybutyric acid (BHBA) levels in dairy cows with ketosis. We used sixty cows with low milk yield, abnormal glucose metabolism, and ketosis. Serum FGF21 and BHBA levels were measured using commercial kits. Serum FGF21 increased with increasing BHBA levels up to 1.6 mmol/L. At BHBA levels > 1.6 mmol/L, FGF21 decreased. Serum FGF21 levels were positively associated with BHBA levels, particularly in dairy cows with subclinical ketosis (r = 0.647, P < 0.01). At BHBA levels between 1.2 mmol/L and 1.6 mmol/L, FGF21 was more closely correlated with BHBA than with other metabolic parameters. At BHBA levels > 1.6 mmol/L, the association between FGF21 and BHBA was not significant. In conclusion, our results show that FGF21 was closely related with SK in cows. FGF21 may be a promising regulator in the prevention of subclinical ketosis.
2

An evaluation of beta-hydroxybutyrate in milk and blood for prediction of subclinical ketosis in dairy cows

100%
Samiei A., Liang J. B., Ghorbani G. R., Hirooka H., Yaakub H., Tabatabaei M.
Polish Journal of Veterinary Sciences
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2010
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tom 13
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nr 2
3

Beta-hydroxybutyrate, glucose, calcium, phosphorus, and vitamin C concentrations in blood of dairy cows with subclinical ketosis during the early lactation

80%
Zhang Z., Liu G., Li X., Wang Z., Kong T., Zhang N., Guo C.
Bulletin of the Veterinary Institute in Puławy
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2009
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tom 53
|
nr 1
71-74
The objective of this study was to examine the association between β-hydroxybutyrate (BHBA) and glucose, calcium (Ca), phosphorus (P), and vitamin C concentrations in dairy healthy and with subclinical ketosis cows during an early lactation period. The blood from 99 healthy cows and 26 sub-clinically ketotic cows within the first two months of lactation was sampled. Serum concentration of BHBA was measured by enzymatic-rate method, glucose by oxidase method, and P by colorimetric method. These tests were performed in a biochemical auto-analyser. Serum Ca concentration was measured by atomic absorption spectrometer followed by acid digestion. Vitamin C was measured by HPLC. The results showed that in ketotic cows serum BHBA was significantly increased (P<0.01) and glucose and Ca concentrations were significantly decreased (P<0.01) as compared to healthy cows, while vitamin C and P concentrations were similar in the both groups of cows (P>0.05). The serum BHBA concentration was negatively correlated with the serum glucose and Ca concentrations (P<0.01). Vitamin C and P status of cows with subclinical ketosis was not affected by BHBA. Serum Ca concentration can be used as a reference index for the diagnosis of subclinical ketosis.
4

Sensitivity and specificity of various tests determining beta-hydroxybutyrate acid in diagnosis of ketosis in cows

80%
Kupczynski R., Cupok A.
Electronic Journal of Polish Agricultural Universities. Series Veterinary Medicine
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2007
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tom 10
|
nr 3
5

Comparison of adiponectin levels and some metabolic parameters in dairy cows with subclinical and clinical ketosis

80%
Akgul G., Mecitoglu Z., Udum Kucuksen D., Senturk S.
Medycyna Weterynaryjna
|
2018
|
tom 74
|
nr 03
The aim of the presented study was to evaluate the relationship between adiponectin and the non-esterified fatty acids (NEFA), β-hydroxybutyric acid (BHBA), glucose, albumin, gamma-glutamyl transferase (GGT), calcium, phosphorus and blood urea nitrogen (BUN) levels in healthy cows and cows suffering clinical or subclinical ketosis in the early postpartum period. A total of 45 Holstein-Friesian dairy cows, consisting of 15 with clinical ketosis, 15 with subclinical ketosis and 15 healthy controls, was used in the study. The selection of animals was based on blood BHBA levels and urine ketone strip results on day 7 after parturition. Blood adiponectin, NEFA, glucose, albumin, GGT, calcium, phosphorus and BUN were also measured on day 7 postpartum. Adiponectin levels were significantly lower in both clinical ketosis and subclinical ketosis groups compared to the control group. NEFA levels were higher and glucose and calcium levels were lower in both ketosis groups when compared to the control animals. On the other hand, blood albumin, GGT, phosphorus and BUN levels did not differ among study groups. Based on the results of the study, it can be stated that adiponectin may play a role in the pathogenesis of ketosis. This role could be a lower milk yield and better energy balance in early postpartum dairy cows with high adiponectin levels due to increased whole body tissue insulin sensitivity.
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