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Het inschatten van energiereserves onder de vorm van vet bij hoogproductieve melkkoeien

Mieke Van Eetvelde (UGent) , Stefaan De Smet (UGent) and Geert Opsomer (UGent)
Author
Organization
Abstract
The aim of the present study was to examine the correlation between the subcutaneous and intra-abdominal fat deposits in dairy cows and, furthermore, to determine how these fat deposits can be accurately measured in the living cow using methods applicable in the field. In 74 dairy cows, the amount of subcutaneous fat was measured just before slaughter, using three different techniques: determination of the body condition score (BCS), measurement of the ultrasonographic back fat thickness (BFT), and measurement of the bio-electrical impedance (bioelectrical impedance analysis, BIA). After slaughter, the amount of fat stored in the omentum was determined using a new omental fat score (OFS) based on a 5-point scale. The results revealed that there is significant correlation between the different methods tested to measure the amount of subcutaneously stored fat (BCS-BFT: r = 0.71; p < 0.001; BCS-BIA: r 0.39; p < 0.01; BFT-BIA: r = 0.57; p < 0.001). Remarkably, however, no correlation was found between the OFS and the amount of fat stored in the subcutis as measured by the BCS and the BFT (r = 0.20; p = 0.08 and r = 0.10; p = 0.39, respectively). Also, the BIA results were not correlated with the OFS (r = 0,10; p = 0,40), a fact which could be due to the electrode placement along the dorsal midline of the cow instead of on the limbs. The conclusion of this study is that both farmers and veterinarians should be aware that, although the BCS and the BFT may be scored as optimal in relation to their stage in lactation, some cows may hide a significant amount of fat in their omentum, which may put them at a higher risk of suffering from metabolic diseases. More research is required in order to develop new techniques to measure accurately and in a practically applicable way the total amount of fat stored in the body of a living cow.
Keywords
BOVINE CARCASS, BIOELECTRICAL-IMPEDANCE, STEERS, TISSUE, CATTLE, MUSCLE, BREED, LIVER

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Citation

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Chicago
Van Eetvelde, Mieke, Stefaan De Smet, and Geert Opsomer. 2011. “Het Inschatten Van Energiereserves Onder De Vorm Van Vet Bij Hoogproductieve Melkkoeien.” Vlaams Diergeneeskundig Tijdschrift 80 (1): 31–37.
APA
Van Eetvelde, M., De Smet, S., & Opsomer, G. (2011). Het inschatten van energiereserves onder de vorm van vet bij hoogproductieve melkkoeien. VLAAMS DIERGENEESKUNDIG TIJDSCHRIFT, 80(1), 31–37.
Vancouver
1.
Van Eetvelde M, De Smet S, Opsomer G. Het inschatten van energiereserves onder de vorm van vet bij hoogproductieve melkkoeien. VLAAMS DIERGENEESKUNDIG TIJDSCHRIFT. 2011;80(1):31–7.
MLA
Van Eetvelde, Mieke, Stefaan De Smet, and Geert Opsomer. “Het Inschatten Van Energiereserves Onder De Vorm Van Vet Bij Hoogproductieve Melkkoeien.” VLAAMS DIERGENEESKUNDIG TIJDSCHRIFT 80.1 (2011): 31–37. Print.
@article{1198080,
  abstract     = {The aim of the present study was to examine the correlation between the subcutaneous and intra-abdominal fat deposits in dairy cows and, furthermore, to determine how these fat deposits can be accurately measured in the living cow using methods applicable in the field. In 74 dairy cows, the amount of subcutaneous fat was measured just before slaughter, using three different techniques: determination of the body condition score (BCS), measurement of the ultrasonographic back fat thickness (BFT), and measurement of the bio-electrical impedance (bioelectrical impedance analysis, BIA). After slaughter, the amount of fat stored in the omentum was determined using a new omental fat score (OFS) based on a 5-point scale. The results revealed that there is significant correlation between the different methods tested to measure the amount of subcutaneously stored fat (BCS-BFT: r = 0.71; p {\textlangle} 0.001; BCS-BIA: r 0.39; p {\textlangle} 0.01; BFT-BIA: r = 0.57; p {\textlangle} 0.001). Remarkably, however, no correlation was found between the OFS and the amount of fat stored in the subcutis as measured by the BCS and the BFT (r = 0.20; p = 0.08 and r = 0.10; p = 0.39, respectively). Also, the BIA results were not correlated with the OFS (r = 0,10; p = 0,40), a fact which could be due to the electrode placement along the dorsal midline of the cow instead of on the limbs. The conclusion of this study is that both farmers and veterinarians should be aware that, although the BCS and the BFT may be scored as optimal in relation to their stage in lactation, some cows may hide a significant amount of fat in their omentum, which may put them at a higher risk of suffering from metabolic diseases. More research is required in order to develop new techniques to measure accurately and in a practically applicable way the total amount of fat stored in the body of a living cow.},
  author       = {Van Eetvelde, Mieke and De Smet, Stefaan and Opsomer, Geert},
  issn         = {0303-9021},
  journal      = {VLAAMS DIERGENEESKUNDIG TIJDSCHRIFT},
  keyword      = {BOVINE CARCASS,BIOELECTRICAL-IMPEDANCE,STEERS,TISSUE,CATTLE,MUSCLE,BREED,LIVER},
  language     = {dut},
  number       = {1},
  pages        = {31--37},
  title        = {Het inschatten van energiereserves onder de vorm van vet bij hoogproductieve melkkoeien},
  url          = {http://vdt.ugent.be/code/showupload.php?id=628},
  volume       = {80},
  year         = {2011},
}

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