Table 3 Differences on plasma stress indicators between two group cows showing feed tossing behavior or no signs of abnormal behavior

Cortisol (ng/ml)

13.517

8.835

0.883

0.004

Heat shock protein 70 (pg/ml)

54.281

54.479

0.977

0.934

γ-hydroxybutyric acid (umol/L)

1.301

1.259

0.044

0.638

Epinephrine (ng/m)

3.130

3.190

0.047

0.530

Norepinephrine (ng/ml)

19.478

16.371

0.730

0.023

5-hydroxytryptamine (pg/ml)

574.262

480.434

28.139

0.085

Dopamine (nmol/L)

23.866

21.579

1.027

0.264