Iâr (ddof): Gwahaniaeth rhwng fersiynau

Lleddir cywion ieir ar gyfer y ford. Gwneir hyn fel arfer gydag ieir a fagwyd mewn ffatrioedd (neu ''"fatris"'') ond ceir hefyd gywion ieir llygad yr haul neu ''free range'', gyda chanran bychan ohonyn nhw hefyd yn organig. Un o'r ymgyrchwyr cryfaf dros gig llygad yr haul, organig ydy [[Hugh Fearnley-Whittingstall]] <ref>{{cite web|title=Food Chefs: Hugh Fearnley-Whittingstall|url=http://www.bbc.co.uk/food/chef_biogs/d.shtml|work=BBC|publisher=BBC|accessdate=30 Gorff. 2012|author=BBC|year=2012|archiveurl=https://web.archive.isorg/EQtsweb/20040626112421/http://www.bbc.co.uk/food/chef_biogs/d.shtml|archivedate=20122004-0706-2126|url-status=dead}}</ref><ref>{{cite news | title = Hugh Fearnley-Whittingstall Profile | work = [[The Guardian]] | url = http://commentisfree.guardian.co.uk/hugh_fearnleywhittingstall/profile.html | accessdate =28 Mai 2008| location=London | date=3 Hydref 2007}}</ref> drwy'i raglen deledu [[River Cottage]].