title: The effects of flock, number of fetuses and age on some biochemical blood constituents in ewes in late pregnancy under field conditions.
mesh_terms: D000818:Animals; D005260:Female; D008098:Litter Size; D008423:Maternal Age; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000097:blood*; D012016:Reference Values; D012756:Sheep / Q000097:blood*