Table 5.
Least square means and standard errors for daily activity and rumination by breed group across lactation numbers for the organic dairy herd and low-input conventional dairy herd
| Organic herd | Conventional herd | |||
|---|---|---|---|---|
| Breed group1 | Mean | SE | Mean | SE |
| Activity, activity units | ||||
| Holstein | 612.1 | 44.2 | 583.3 | 20.5 |
| 1964 Holstein | 629.6 | 26.5 | 597.3 | 35.1 |
| MVH | 582.0 | 21.5 | 611.8 | 15.4 |
| NJV | 607.0 | 15.8 | 634.8 | 38.8 |
| Rumination, min/d | ||||
| Holstein | 533.3a | 11.6 | 513.3a | 4.5 |
| 1964 Holstein | 494.6b | 7.0 | 483.5b | 7.8 |
| MVH | 519.8a | 5.6 | 506.7a | 3.4 |
| NJV | 512.4a | 4.1 | 507.5a | 8.6 |
a,bMeans within a column for daily activity and rumination without common superscripts are different at P < 0.05. There were no differences for daily activity for breeds groups in the organic and conventional herds.
1MVH = crossbreds of Montbéliarde, Viking Red, and Holstein; NJV = crossbreds of Normande, Jersey, and Viking Red.