Incidence of Listeria spp. in Dairy Cows Feed and Raw Milk in Latvia

Table 1

Incidence of Listeria species in feed of dairy cows.

Type of feed	Listeria spp. 𝑛 (%)	L. monocytogenes 𝑛 (%)
Grass (𝑛=14)	Not detected	Not detected
Silage (𝑛=48)	4 (3.1)	6 (4.7)
Haylage (𝑛=16)	2 (1.5)	2 (1.5)
Hay (𝑛=10)	Not detected	2 (1.5)
Feed concentrates (𝑛=32)	Not detected	12 (9.3)
Mixed fodder prepared in the farm (𝑛=4)	2 (1.5)	2 (1.5)
Straw (𝑛=6)	4 (3.1)	2 (1.5)
Total (𝑛=130)	12 (9.2)	26 (20.0)