Evaluation of the Fourier Frequency Spectrum Peaks of Milk Electrical Conductivity Signals as Indexes to Monitor the Dairy Goats' Health Status by On-Line Sensors.

With the peak FFT_P 2 , the mean frequency values showed a significant trend between different HS (62.02 ± 5.09 × 10 −3 (Hz) vs. 46.23 ± 1.99 × 10 −3 — Table 8 ) and it reported significantly lower levels during the progress of lactation (60.77 ± 4.40 × 10 −3 (Hz), 48.61 ± 3.50 × 10 −3 and 41.53 ± 1.95 × 10 −3 ).

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