Which preposition to use with rearers

of Occurrences 3%

By means of this gratuity, Mr. Ottolenghe was enabled to give a high price to the rearers of cocoons, and thus sustain the encouragement so judiciously commenced.

in Occurrences 1%

And she takes these children to some of the rearers in the country.

Which preposition to use with  rearers