I'm guessing that it's this:
http://www.antonio-carluccio.com/tagliatelle_al_Ragu_Bolognese
If I knock up an Italian-style meat-&-pasta dish for myself (no recipe - it's just what I throw together), I'll use 100g of mince [simply because I freeze mince in 100g portions] but I'm well aware that that's a great deal more than a supermarket 'ready meal' would contain (where there's typically around 40g of meat in a single portion). So, given that AC's recipe is bulked up by the celery and carrot, his quantities seem about right to me.
Anyway, what are these 'ounces' you refer to? I 'went metric' (along with everyone else in my class) when I entered secondary school - and that was half a century ago!!!