Waldoboro, Maine. (Redirected from Waldoboro (town), Lincoln County, Maine) Waldoboro is a town in Lincoln County, Maine, in the United States. The population was 5,075 at the 2010 census. Waldoboro is a fishing town.
The current recommended daily allowances for selenium are 70 micrograms (mcg) a day for men and 55 mcg a day for women. I recommend that you get at most 200 mcg a day as a supplement. That way, you probably won't overdo it.
On feeds which can be fed at a maximum of 50% of the diet (not that horse owners generally feed it that high), the limit is 0.6 ppm added selenium. Chronic selenium toxicity occurs at about 10X the FDA limit, so there is a pretty good safety margin. How much does a horse actually need? A horseâs basic daily requirement for selenium is 1-3 mg per day. Some chronic selenium symptoms might appear above 10-15 mg/head per day. To figure out what your horse is consuming, have your hay/pasture supply tested, and then add the amount it is consuming from the hay, to the amount it is consuming from any feed & supplements, and you will know if you need to make any adjustments to your horseâs overall diet.