i have not read all the comments but:
Yes, the mother got transported to the slaughterhouse, and becaus Babe didnt drink the milk from the machine they grabbed him and sold him .. i guess..
there he became the price of a game of 'guess the weight'.

when the farmer won him he was just there to become fat en then eaten. but then they made a connection.

i love this movie so much... its so cute.
especially the part where Babe goes to a herding competition and everybody laughs at the farmer and babe xD

as a pig lover i 100% support this movie!

i didnt really like the 2nd movie that much though..
.. im going to watch this movie