G’Day from down under
BadWolf73 
Welcome!
Personally, I do not supplement with vitamins. I too provide oyster shell for calcium but leave it separate [not in their food] in the coop so that they can have some if/when they feel they need it.
I do use ACV [Apple Cider Vinegar with
Mother] in their drinking water for the following reasons:
* It apparently maintains a good pH balance in their digestive system and makes it a little uncomfortable for worms to live in. So while not an actual wormer, it can be a deterrent.
* It can act as an antiseptic killing bacteria in their throat and is reported to keep bacteria out of their water. I know it is recommended to people with sinus issues also.
* Some think it increases egg production but I can't comment on that because I only have bantams who spend more time broody than they do laying
However, the benefits/detriments [or lack of] to using ACV has been and will probably continue to be a discussion on which there will never be an agreement and it really boils down to personal choice.
I hope you enjoy being a BYC member. There are lots of friendly and very helpful folks here so not only is it overflowing with useful information it is also a great place to make friends and have some fun.
You might want to also
Find Your State Thread and pop in and say hello.
Personally, I have found the
Topic of the Week articles a great resource and a one stop shop for questions which may have already been discussed within the BYC membership group.
If you would like to share pictures and stories of your flock, you have come to the right place. BYC’ers never tire of these and do not back away slowly or commence eye rolling when the photo album or home videos come out
