Table 17.
Estimated 95th percentile (P95) and mean exposure to DAS by ruminants and horses, derived from concentrations in individual feed materials and their relative proportions in diets(a)
| Animal species (diet) | Diet concentration μg/kg dry matter | Exposure μg/day | Exposure μg/kg bw per day | ||||
|---|---|---|---|---|---|---|---|
| Mean | P95 | Mean | P95 | Mean | P95 | ||
| Ruminants on maize‐silage‐based diets | |||||||
| Dairy Cows (maize silage‐based diet) a | LB | 1.3 | nd | 36 | nd | 0.06 | nd |
| UB | 43 | nd | 1,193 | nd | 1.8 | nd | |
| Beef cattle (maize silage‐based diet) a | LB | 1.5 | nd | 10 | nd | 0.03 | nd |
| UB | 35 | nd | 234 | nd | 0.78 | nd | |
| Ruminants and horses on other forage‐based diets | |||||||
| Dairy cows (grass‐based diet) | LB | nd | nd | 0.01 | nd | nd | nd |
| UB | 2.3 | 3.9 | 48 | 80 | 0.07 | 0.12 | |
| Beef cattle (grass‐based diet) | LB | nd | nd | Nd | nd | nd | nd |
| UB | 0.51 | 0.68 | 4.87 | 6.55 | 0.01 | 0.02 | |
| Beef cattle (cereal‐based diet) | LB | nd | nd | Nd | nd | nd | nd |
| UB | 4.3 | 5.8 | 43 | 57 | 0.11 | 0.14 | |
| Lactating sheep | LB | nd | nd | Nd | nd | nd | nd |
| UB | 2.8 | 4.6 | 7.8 | 13 | 0.10 | 0.16 | |
| Lactating goats | LB | 0.17 | nd | 0.59 | nd | 0.01 | nd |
| UB | 7.5 | 15 | 25 | 49 | 0.43 | 0.83 | |
| Horses | LB | 0.11 | nd | 0.16 | nd | nd | nd |
| UB | 3.9 | 15 | 5.8 | 23 | 0.15 | 0.58 | |
bw: body weight; nd: not determined; LB: lower bound; UB: upper bound.
Rounded to the first or second decimal place or to a whole number.
a
Insufficient samples of maize silage were available to reliably undertake 95th percentile exposure estimates.