Heinonen K
Acta Vet Scand. 1988;29(2):239-43. doi: 10.1186/BF03548376.
The reliability of clinical ovarian findings was assessed as an indicator of luteal function in primiparous dairy cows. The postpartum period of 103 cows following their first parturition was studied by thrice weekly rectal palpation of ovaries and whole milk progesterone assay from 1 week after parturition to the first insemination. The relationship between milk progesterone levels and 1101 ovarian findings was compared during the follicular phases, short luteal phases and during the early, mid and late thirds of normal luteal phases. The compatibility between elevated progesterone and palpable corpus luteum was 71%, and between low progesterone and lack of corpus luteum 77%. In 10% of all rectal examinations the finding was unspecified; i.e. the clinician could not differentiate between luteal and follicular activity. During the acyclic period prior to the initiation of luteal function, the proportion of false corpus luteum findings was 11%. The corpora lutea of the short oestrous cycles were more difficult to palpate than those of normal cycles. During early dioestrus the corpus luteum was significantly more difficult to palpate than during the rest of dioestrus. The percentage of unspecified findings was highest during early dioestrus. The paper discusses the reliability of rectal examination as a method of diagnosing cyclicity and of evaluating the responsiveness of a cow to prostaglandin treatment.
对初产奶牛黄体功能指标——临床卵巢检查结果的可靠性进行了评估。对103头奶牛首次分娩后的产后阶段进行了研究，从分娩后1周开始至首次输精，每周三次通过直肠触诊卵巢并测定全乳孕酮水平。比较了卵泡期、短黄体期以及正常黄体期前三分之一、中三分之一和后三分之一期间乳孕酮水平与1101次卵巢检查结果之间的关系。孕酮升高与可触及黄体之间的符合率为71%，孕酮水平低与无黄体之间的符合率为77%。在所有直肠检查中，10%的检查结果不明确，即临床医生无法区分黄体和卵泡活动。在黄体功能开始前的无周期阶段，假黄体检查结果的比例为11%。短发情周期的黄体比正常周期的黄体更难触诊。在发情早期，黄体比发情期其余时间明显更难触诊。发情早期不明确检查结果的百分比最高。本文讨论了直肠检查作为诊断周期性和评估奶牛对前列腺素治疗反应性方法的可靠性。
