I have made 3 raised beds in the garden... of aprox 35 sq m area.
Having put in 15 cu m of top soil, now going to put on top a 100mm depth of well rotted manure, then another 100mm top soil as cover. (with slight fork over) I know putting manure in last year and letting it rot over winter would be first choice - couldn't do that, hence this second method of layering. First crop will help mix it in.
First crop will be root veg ... 30% potatoes, followed by cabbage, cauliflower, parsnip & onion.
The Q .. is simple should I use Cow manure or Horse manure ? ....... I have a stables and farm close by ... and as much of either as I want.
Supposedly Elephant Manure is the best ... but there is a shortage of visiting elephants in my area - used to have Billy Smarts & Chipperfields visit several times a year when I was a kid, now the only circus is some Russians prancing about and dangling on ropes.