The reason for mastering out to an uncompressed / minimally lossy format is so that you have a master copy, which you can then use to make other copies, without generation loss, or having to re-render.
You don't have to use Animation. There, I've said it. While it's mathematically lossless, it's only 8-bit, so swings ± roundabouts. While I used to only ever render Aniamtion ever, these days I prefer DNxHR or Cineform with 10-bit colour, the file size is better and you have four times as much colour information. If you're on a mac ProRes 4444 is a good option.
But the first step is check with the broadcaster to see what their tech specs are. The broadcaster where I work mostly take ProRes, so I make proRes submasters from my master copy using ffmpeg. No seriously, check, because they will reject stuff that doesn't pass their quality control.