Observations on lambing performance of sheep vaccinated against ovine viral abortion.
D000034:Abortion, Veterinary / Q000517:prevention & control*; D000818:Animals; D005260:Female; D011247:Pregnancy; D011270:Pregnancy, Animal; D012756:Sheep; D012757:Sheep Diseases / Q000517:prevention & control*; D014611:Vaccination; D014765:Viral Vaccines / Q000627:therapeutic use*
D014765:Viral Vaccines