Cesium-137 in grass-fed beef.

If as much as around 6.9 Bq per kilogram is being found in grass, how much Cs-137 would a cow ingest? and worse, Cs-137 tends to get absorbed in muscle tissue.

Let's sat around 20kg a day? That would be 138 Bq total, and for a week that would expand to 966 Bq total.