Hühn U, Fritzsch M, Dahms R
Arch Exp Veterinarmed. 1977;31(4):561-6.
Toleration-oriented insemination was applied to 1,373 oestrous sows that had undergone bio-engineering treatment, with two insemination portions having been used for each oestrous. Five International Units of oxytocin were added immediately before insemination proper to the semen applied to 315 gilts and 377 old sows. The control group included 296 gilts and 385 old sows inseminated in parallel. Semen intake, on average, was complete between four and eight minutes with the majority of gilts and between four and seven minutes with most of the old sows, but no evidence was obtained as to any action of the oxytoxin upon intake intensity. The treated gilts were superior to the controls by 6.3 per cent in pregnancy rate and by 56 born piglets to each 100 first inseminations. Superiority, consequently, was significant. In both gilts and old sows added oxytocin prolonged insemination by more than five minutes and gave clearly better fertility results.
对1373头经过生物工程处理的发情母猪采用了以耐受性为导向的授精方法，每次发情使用两个输精剂量。在对315头后备母猪和377头经产母猪授精时，在正式授精前立即向精液中添加5国际单位的催产素。对照组包括296头后备母猪和385头经产母猪，它们同时进行授精。大多数后备母猪的精液摄取平均在4至8分钟内完成，大多数经产母猪在4至7分钟内完成，但未获得催产素对摄取强度有任何作用的证据。处理后的后备母猪妊娠率比对照组高6.3%，每100次首次授精所产仔猪多56头。因此，优势显著。在后备母猪和经产母猪中，添加催产素均使授精时间延长了5分钟以上，并明显提高了繁殖效果。
