So as an update to my "OK...what are these calves missing?" post, I ordered the Multimin in, it arrived today, and I'll use it on Friday when I do the vaccinations for the calves. Got it cheaper than Valley Vet sells it for too; it was $35.50 instead of $43. 
FWIW, here's what I found interesting.
This is Multimin:
Zinc, not less than 20 mg/mL
Manganese, not less than 20 mg/mL
Selenium, not less than 5 mg/mL
Copper, not less than 10 mg/mL
This is Mu-Se:
Each mL contains: 10.95 mg sodium selenite (equivalent to 5 mg selenium)
Same amounts of Selenium in each.
Now for the really interesting part.
*Mu-Se carries a 30 day slaughter withdrawal. Multimin has none.
*Mu-Se carries the labelled warning of not to use in 3rd trimester dairy cows as abortions have been noted in that class. Multimin says nothing of that.
*Mu-Se mentions that "WARNINGS Anaphylactoid reactions, some of which have been fatal, have been reported in cattle administered the MU-SE product". Multimin makes no comments about fatalities, mentioning only "CAUTION: Slight local reaction may occur for about 30 sec. after injection. A slight swelling may be observed at injection site for a few days after administration.".
V-e-r-y interesting. And the dose on Mu-Se is 1mL/200lbs body weight in calves, in Multimin it's 1mL/100lbs body weight. So it's a lower dose in Mu-Se, with all those warnings, and higher dose for Multimin, with no warning beyond "slight local reaction may occur".
Not quite sure what to make of all that. Any comments?
FWIW, here's what I found interesting.
This is Multimin:
Zinc, not less than 20 mg/mL
Manganese, not less than 20 mg/mL
Selenium, not less than 5 mg/mL
Copper, not less than 10 mg/mL
This is Mu-Se:
Each mL contains: 10.95 mg sodium selenite (equivalent to 5 mg selenium)
Same amounts of Selenium in each.
Now for the really interesting part.
*Mu-Se carries a 30 day slaughter withdrawal. Multimin has none.
*Mu-Se carries the labelled warning of not to use in 3rd trimester dairy cows as abortions have been noted in that class. Multimin says nothing of that.
*Mu-Se mentions that "WARNINGS Anaphylactoid reactions, some of which have been fatal, have been reported in cattle administered the MU-SE product". Multimin makes no comments about fatalities, mentioning only "CAUTION: Slight local reaction may occur for about 30 sec. after injection. A slight swelling may be observed at injection site for a few days after administration.".
V-e-r-y interesting. And the dose on Mu-Se is 1mL/200lbs body weight in calves, in Multimin it's 1mL/100lbs body weight. So it's a lower dose in Mu-Se, with all those warnings, and higher dose for Multimin, with no warning beyond "slight local reaction may occur".
Not quite sure what to make of all that. Any comments?