23Nov 2016

BODY CONDITION SCORING AND CHANGES IN SOME BLOOD BIOCHEMICAL PARAMETERS IN COWS WITH SUBCLINICAL AND CLINICAL KETOSIS.

  • Department of Internal Diseases, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria.
  • Department of Veterinary Microbiology, Infectious and Parasitic Diseases, Faculty of Veterinary Medicine, Trakia University, Stara Zagora, Bulgaria.
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Studies were conducted in highly productive dairy cows in connection with the establishment of the changes in the values of body condition score (BCS), ?-hydroxybutyric acid (BHBA) and non-esterified fatty acids (NEFA) in their blood. For this purpose were used 158 Holstein cows with yearly milk yield of 9000–11000 L in their 1st to 4th lactation. The cows were divided into 3 groups: I group (pregnant cows); II group (recently calved) and III group (lactating cows). Blood concentrations of BHBA were assayed in all cows and on the basis of results, they were classifies as healthy (control, C), affected with subclinical ketosis (SCK) and clinical ketosis (CK). The levels of NEFA were determined in the blood of the targeted animals. Evaluation of BCS of the cows was conducted at 5 points system. It was found that the quantity of BHBA in cows from groups I, II and III with SCK signs was statistically significantly elevated vs control cows and ranged from 1.57±0.55 mmol/l to 1.73±0.61 mmol/l, (p<0.001). There were no BHBA values > 2.6 mmol/l, e.g. CK in cows from the first group. In cows of the groups II and III with CK signs, blood BHBA was statistically significantly increased vs control cows and vs animals with SCK and were 4.27±1.29 mmol/l and 4.75±1.36 mmol/l (p<0.001), respectively. The evaluation of BCS of cows with SCK signs, showed a trend falsity decrease compared to the control groups and were between 3.0±0.41 - 3.25±0.36. In cows from groups II and III with CK signs BCS decreased and were 2.75±0.32 for the second group and 2.51±0.31 for the third group (p <0.05). In cows of the groups I, II and III with SCK quantities of NEFA were from 0.48±0.03 mmol/l to 0.84±0.03 mmol/l, while that of the second and third groups with CK were between 0.35±0.01 mmol/l and 0.68±0.02 mmol/l.


[Vania Marutsova and Plamen Marutsov. (2016); BODY CONDITION SCORING AND CHANGES IN SOME BLOOD BIOCHEMICAL PARAMETERS IN COWS WITH SUBCLINICAL AND CLINICAL KETOSIS. Int. J. of Adv. Res. 4 (Nov). 405-412] (ISSN 2320-5407). www.journalijar.com


Vania Marutsova


DOI:


Article DOI: 10.21474/IJAR01/2098      
DOI URL: http://dx.doi.org/10.21474/IJAR01/2098