Table 1 Eating and rumination variables in 10 control cows (group A) during five consecutive days (mean ± standard deviation or median, range in brackets)

Variable

1

2

3

4

5

Duration of eating (min)

292 (261 – 372)

319 (269 – 382)

275 (230 – 376)

282 (222 – 426)

319 (240 – 361)

212 – 394

Chewing cycles during eating

19'134 (16‘299 – 31'609)

20'209 (17'015 – 24'437)

19'284 (15'033 – 28'177)

18'236 (13'683 – 28'178)

20'800 (14'662 – 23'014)

13'101 – 26'515

Number of eating phases

16.8 ± 3.52 (12 – 22)

17.9 ± 3.35 (13 – 21)

16.3 ± 3.77 (12 – 22)

16.9 ± 3.96 (11 – 22)

18.2 ± 3.62 (13 – 24)

10 – 24

Duration of rumination (min.)

389 (299 – 422)

390 (285 – 436)

400 (341 – 467)

390 (305 – 458)

410 (347 – 453)

304 – 471

Number of regurgitated cuds

481 (283 – 582)

487 (375 – 551)

493 (438 – 600)

486 (423 – 571)

508 (417 – 573)

366 - 611

Chewing cyles per cud

54 (40 – 77)

54 (43 – 73)

56 (40 – 71)

54 (39 – 73)

54 (40 – 73)

53 - 57

Number of rumination phases

13.1 ± 2.47 (8 – 18)

13.3 ± 2.21 (12 – 19)

13.8 ± 2.10 (12 – 19)

13.4 ± 2.37 (11 – 19)

12.9 ± 2.47 (10 – 19)

9 – 18