This study aimed to evaluate clinical and biochemical changes in dairy cows during periparturient period. It was carried out on 38 multiparous Holstein/Fersian crossbreed dairy cows 3–11 years old. Using ultrasonography for measurement backfat thickness (BFT) for detection of the energy deficit. BFT on dairy cattle is used to monitor changes in subcutaneous fat thickness which represent changes in energy ...
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