Study on Salmonella Isolates from Fresh Milk of Dairy Cows in Selected Districts of Wolaita Zone, Southern Ethiopia

Table 1

Risk factors associated with the prevalence of Salmonella identified from milk samples in the study area.

Factors	Frequency	Prevalence	χ^2	values
Breed			6.0890	0.014
HF cross	52	9 (17.3%)
Local Zebu	99	5 (5%)
Age			14.1208	0.001
3–6 years	62	4 (6.5%)
7–9 years	80	6 (7.5%)
>9 years	9	4 (44.4%)
Body condition			7.9531	0.019
Good	34	1 (2.9%)
Medium	66	4 (6.1%)
Poor	51	9 (17.6%)
Management			0.6704	0.715
Intensive	1	0 (0%)
Semi-intensive	22	3 (13.6%)
Extensive	128	11 (8.6%)
Husbandry hygiene			1.7019	0.192
Good	15	0 (0%)
Poor	136	14 (10.3%)
Lactation stage			8.1844	0.017
Early	36	1 (2.8)
Mid	68	4 (5.9%)
Late	47	9 (19.1%)
Parity			14.0926	0.001
Few	60	4 (6.7%)
Moderate	82	6 (7.3%)
Many	9	4 (44.4%)