The conversion of haematin to bile pigment by the foetus.
D000818:Animals; D001663:Bilirubin / Q000096:biosynthesis*; D002247:Carbon Isotopes; D005260:Female; D005333:Fetus / Q000378:metabolism*; D006418:Heme / Q000378:metabolism*; D011247:Pregnancy; D012756:Sheep
D002247:Carbon Isotopes; D006418:Heme; D001663:Bilirubin