King G J, Robertson H A, Elliot J I
Can Vet J. 1979 Jun;20(6):157-60.
Intramuscular injections of various levels of prostaglandin F(2alpha) were administered to 116 pregnant swine in three commercial herds and the University research unit on Day 111, 112 or 113 of gestation. Sixty-three percent of the treated animals farrowed during the working day immediately following treatment. The parturition time, birth weight, litter size, number of piglets weaned, growth of the piglets to weaning and subsequent rebreeding of the dams were comparable with the expected performance in the herds. The results indicated that prostaglandin F(2alpha) in doses ranging from 5 to 12.5 mg per animal were effective for induction of parturition in a substantial proportion of the treated animals. Successful induction of parturition could reduce the farrowing interval for batches, allow more supervision of farrowing, facilitate transfer of piglets from large to small litters and generally increase efficiency in the farrowing unit. This technique could have practical application in intensive swine production units.
在三个商业猪场和大学研究单位，于妊娠第111、112或113天对116头妊娠母猪进行了不同剂量前列腺素F(2α)的肌肉注射。63%的受试动物在治疗后的工作日内产仔。分娩时间、出生体重、窝产仔数、断奶仔猪数、仔猪断奶前的生长情况以及母猪随后的再繁殖情况与猪场的预期表现相当。结果表明，每头动物5至12.5毫克剂量的前列腺素F(2α)能使相当比例的受试动物有效诱导分娩。成功诱导分娩可缩短批次的产仔间隔，允许对分娩进行更多监督，便于将仔猪从大窝转移到小窝，并总体提高分娩单元的效率。该技术可在集约化养猪生产单位中实际应用。
