超音波於台灣的山羊妊娠診斷之臨床應用

為探討超音波於台灣地區山羊的妊娠診斷臨床應用性，以可攜式超音波儀在現場進行山羊妊娠檢查。在1053例檢查羊隻中571例（54.23％）診斷為懷孕，受檢羊隻懷孕率以十月到一月較高（58.18％-68.42％）。懷孕羊隻依影像特徵可分為早期、中期和後期。懷孕20天左右可見到直徑1-2公分無回音性的小型液體腔室，周圍被一層低回音性的子宮壁包圍，之後腔室逐漸變大，且出現低回音性的胚胎團塊和胎膜構造。懷孕50天後胎兒形狀可約略辨識，逐漸可見到頭部、胸部、心跳、腹部、脊椎、肋骨、四肢、尾巴及宮阜等構造。懷孕100天後胎兒各個內臟器官均已發育成形易於辨識。有47例診斷為子宮積液（4.46％），其未見任何懷孕特徵，只有小型至大型無回音性的液體腔室存在。其中具完整資料73例以宮阜尺寸推算懷孕日齡，可得公式如下：懷孕日齡（day）＝16.17 × 宮阜尺寸（cm）+ 31.78，R^2＝0.6362。在台灣以超音波進行山羊妊娠診斷，可協助現場飼養管理，在臨床上有實際應用價值。

關鍵字

山羊；超音波；妊娠診斷；宮阜；子宮積液

並列摘要

To evaluate the clinical application of ultrasonography, the portable ultrasound was used for the pregnancy diagnosis of goat in Taiwan. A total of 571 out of 1053 does (54.23%) were diagnosed to be pregnant. A relative higher pregnant rate (58.18%-62.42%) was found between October and January. The pregnant goats were categorized by the ultrasonography as early, middle, or late stage. Around day 20 of gestation, small anechogenic fluid-filled cavity surrounded by a layer of hypoechogenic uterine wall was observed. The cavity enlarged later on, and the hypoechogenic embryonic mass and fetal membrane appeared gradually. The shape of fetus could be distinguished after day 50, and the structure of fetal head, thorax, heartbeat, abdomen, vertebrae, ribs, limbs, tail and caruncle could be readily observed. Beyond day 100 most of the fetal internal organs were well developed, and easily identified. Forty-seven cases (4.46%) were diagnosed as hydrometra, and small to large anechogenic fluid-filled cavities without any pregnant characteristics were observed. The correlation of the size of caruncle and the day of gestation was analyzed and the pregnancy stage could be estimated as: day of pregnancy (day) = 16.17 × size of caruncle (cm) + 31.78, and R^2 = 0.6362. Thus, ultrasonography could be used for pregnancy diagnosis of goats in Taiwan, and its usage should be benefitial to the reproductive management.

並列關鍵字

Caruncle ； goat ； hydrometra ； pregnant diagnosis ； ultrasound

國際替代計量

超音波於台灣的山羊妊娠診斷之臨床應用

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