Survival rate of lambs after an injection of ewe's serum.
D000818:Animals; D000831:Animals, Newborn; D001835:Body Weight; D005260:Female; D007116:Immunization, Passive; D011247:Pregnancy; D012756:Sheep / Q000254:growth & development*; D012757:Sheep Diseases / Q000401:mortality / Q000517:prevention & control*