alexa Ultrasonographic Prediction of Hepatic Fat Content in Dairy Cows during the Transition Period | OMICS International
ISSN: 2157-7579

Journal of Veterinary Science & Technology
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Research Article

Ultrasonographic Prediction of Hepatic Fat Content in Dairy Cows during the Transition Period

Mohamed Tharwat1, Shin Oikawa2 and Sébastien Buczinski3*

1Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University, Saudi Arabia

2Department of Veterinary Herd Health, School of Veterinary Medicine, Rakuno Gakuen University, 582 Bunkyodai-Midorimachi, Ebetsu, Hokkaido 069-8501, Japan

3Bovine Ambulatory Clinic, Department des Sciences Cliniques, Faculté de Médecine Vétérinaire, Université de Montréal, Saint-Hyacinthe, Canada

*Corresponding Author:
Dr. Sébastien Buczinski
Bovine Ambulatory Clinic
Department des Sciences Cliniques
Faculté de Médecine Vétérinaire
Université de Montréal, Saint-Hyacinthe, Canada
E-mail: [email protected]

Received date: February 22, 2011; Accepted date: October 28, 2011; Published date: January 04, 2011

Citation: Tharwat M, Oikawa S, Buczinski S (2012) Ultrasonographic Prediction of Hepatic Fat Content in Dairy Cows during the Transition Period. J Veterinar Sci Technol 3:111. doi:10.4172/2157-7579.1000111

Copyright: © 2012 Tharwat M, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

The objective of the present study was to emphasize the value of ultrasonography in predicting hepatic fat content in dairy cows during the transition period. For this purpose, five dairy cows during the transition period were examined by ultrasonography 3 times during this phase, 3wk before expected partition (wk -3), at parturition (wk 0) and 3wk after parturition (wk +3). Parallel, blood samples were collected and livers were biopsied. None of the cows showed clinical disease around calving. Compared with precalving values, the hepatic triglyceride and glycogen concentrations were higher at parturition (wk 0) and thereafter (wk +3). Histopathologically, there were no cellular abnormalities in hepatocytes 3 weeks before parturition. However, at parturition the hepatocytes contained some lipid drops in cytosol, and the cells after parturition (wk +3) turn opacificated severely and cellular membranes are indistinct. With increased liver TG content, hepatic ultrasonography showed increased overall echogenicity with vascular blurring. In the field, the visual evaluation of the brightness of hepatic tissue in dairy cows during the transition period can give a rough, but quick estimate of the liver fat content. To the best of the authors’ knowledge, this study is the first that shows hepatic changes by ultrasonography in dairy cows during the transition period.

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