Table 4 Description and analysis of management practices assessing risk factors associated with Salmonella in dairy farms
From: Risk factors associated with Salmonella in dairy cattle farms in Henan and Hubei provinces, China
Categories | Variables | Salmonella status | Average | Median | Min–max | p valuea |
|---|---|---|---|---|---|---|
Farm demographics | Number of workers cared for sick animals | Positive Negative | 2.1 2.5 | 2 2 | 1- 6 1- 5 | 0.566 |
| Â | Number of milking cows | Positive Negative | 505.0 612.8 | 287.0 375.0 | 73- 1400 50- 2560 | 0.664 |
| Â | Year had been in operation | Positive Negative | 9.6 10.2 | 10 10 | 3- 15 4- 23 | 0.703 |
| Â | Farm size | Positive Negative | 925.7 1127.3 | 623.0 698.0 | 89- 2200 125- 4826 | 0.710 |
| Â | Farm area (hectares) | Positive Negative | 16.0 13.8 | 10.0 6.7 | 1.1- 53.3 3.0- 66.6 | 0.736 |
Rearing practices | Stocking density (m2/cow) | Positive Negative | 32.3 23.8 | 33.5 21.1 | 15.1- 40.0 9.7- 53.3 | 0.012 |