Siman 465
Presented here for study, not as a practical ruling. The Shulchan Aruch rules by Sephardi custom, the Rema's glosses by Ashkenazi custom, and the Kitzur follows Ashkenazi custom. For a practical question, ask your rabbi.
א אֵין שׁוֹרִין מוּרְסָן לְתַרְנְגוֹלִים בְּשׁוּם פָּנִים, וְלֹא חוֹלְטִין. הַגָּה: וּכְשֶׁנּוֹתְנִים לָהֶם שְׂעוֹרִים אוֹ חִטִּים לֶאֱכֹל, יִזָּהֵר שֶׁלֹּא לְהַשְׁלִיכָם בְּמָקוֹם לַח שֶׁיָּבוֹא לִידֵי חִמּוּץ (מַהֲרִי"ו).
1 Laws of bran on Passover One may not soak bran for chickens under any circumstances, nor may one scald it. Rema: When giving them barley or wheat to eat, one should be careful not to throw them in a wet place where they might become leavened.
ב אֵין הָאִשָּׁה שָׁפָה מוּרְסָן עַל בְּשָׂרָהּ, אֲפִלּוּ יָבֵשׁ.
2 A woman may not rub bran on her skin, even if it is dry.
ג אִם שִׁפְשְׁפוּ מוּרְסָן בְּאַוָּז לַח מִמַּיִם, יֵשׁ מִי שֶׁאוֹמֵר שֶׁהָאַוָּז אָסוּר. הַגָּה: וְהָכֵי נָהוּג לְעִנְיַן אִסּוּר חָמֵץ שֶׁהוּא בְּמַשֶּׁהוּ, וְיֵשׁ לִזָּהֵר שֶׁלֹּא לְהַבְהֵב הָעוֹפוֹת בְּקַשִּׁין, שֶׁמָּא יִהְיוּ שָׁם חִטִּים אוֹ דָּגָן מְחֻמָּץ וְיִתֵּן טַעַם בָּעוֹפוֹת בִּשְׁעַת הַהִבְהוּב.
3 If one rubbed bran on a goose that is wet from water, there are those who say the goose is forbidden. Rema: And this is the custom regarding the prohibition of chametz, which applies even in the smallest amount. One should be careful not to singe fowl with straw, lest there be wheat or leavened grain there that would impart flavor to the fowl during the singeing.