Periparturition alterations to liver ultrasonographic echo-texture and fat mobilization parameters in clinically healthy Holstein cows |
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Authors: | Saman Rafia Taghi Taghipour-Bazargani Farzad Asadi Alireza Vajhi Saied Bokaie |
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Affiliation: | (1) Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran, Postal code: 14155-6453;(2) Department of Biochemistry, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran, Postal code: 14155-6453;(3) Department of Food Hygiene, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran, Postal code: 14155-6453 |
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Abstract: | The objective of present study was to record the sequential alterations in liver echo-texture through digital analyzing of
the B-mode ultrasonography in three groups of under-conditioned (UC), moderate-conditioned (MC), and over-conditioned (OC)
clinically healthy Holstein cows from 30 days to calving until 30 days in milk. Furthermore, to compare their changes in association
with the changes of fat mobilization parameters of non-esterified fatty acids (NEFA), betahydroxybutyric acid (BHBA), and
body condition score (BCS). Although the cows lost significant (P < 0.05) BCS from calving and the NEFA values showed an increasing trend near calving and the BHBA values significantly inclined
postparturition, the mean grey scale histogram (MGSH) of liver images did not reveal significant fluctuations unless a significant
decrease on calving day (P < 0.05). The MGSH drop was predicted to be the result of anatomical changes in abdominal cavity, related to delivery and
liver’s blood flow. OC cows had higher NEFA on day +20 than UC and MC cows (P < 0.05). UC cows showed higher MGSH values on day −30 than MC cows and again on day −10 comparing to MC and OC cows (P < 0.05). MGSH values correlated with BCS values (r
UC = −0.186; r
MC = −0.283; r
OC = −0.158). It was concluded that the studied cows did not show significant alterations in textural changes in their liver
ultrasound whilst going through fat mobilization. As quantitative ultrasonography has shown the potential to detect cases
of fatty liver, it could gain the attention to become a feasible device for liver health monitoring on a herd basis. |
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