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題 名 | 非洲象糞孕酮濃度與其生殖階段間之關係 |
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作 者 | 陳玉燕; | 書刊名 | 動物園學報 |
卷 期 | 4 1992.06[民81.06] |
頁 次 | 頁15-22 |
分類號 | 389.8 |
關鍵詞 | 孕酮濃度; 生殖階段; 非洲象糞; |
語 文 | 中文(Chinese) |
中文摘要 | 保護及繁衍瀕臨絕種動物,為世界各國所極力倡導的工作。據文獻所載,非 洲象(African elephant)之動情週期長,且在動物園中不易繁殖。本試驗之目的, 即欲由測定非洲象之糞孕酮(fecal progesterone,fp4)濃度的變化,以探討其與生 殖狀態變化關係之可行性。本試驗選用台北市立動物園中,健康情形良好,且年齡 分別由5至9歲不等之非象,共計四頭。自民國79年5月起至80年5月止,每週採 隻糞樣一次,並將糞樣保存於-20℃中。俟分析時,先以甲醇、石油醚萃取後,再 應用酵素免疫分析法(EIA)測定其孕含量。由試驗結果顯示,年齡最小的非象 (NO.4:5歲齡)於80年4月前之試驗期間,其fp4濃度均維在20∼70ng/g 之間, 及至80年4月至5月期間,始顯著上升至230ng/g;顯示已開始進入發身階段。其中 兩頭非洲象(No.2與No.3)於試驗開始不久後,fp4濃度即出現週期性變化,其動情 週期為14.5±0.6週。(n=4);濾泡期之fp4濃度為20∼-70ng/g,而黃體期之fp4 濃度則維持在130∼200ng/g之間。另一頭母象(No.1)則處於孕階段,其懷孕早期 之fp4濃度變化較大(100∼400ng/g),而懷孕後期則維持在140ng/g左右,其濃度 均較一般家畜者為低。由此顯示,應用糞孕酮濃度變化的追蹤測定,可明白獲知非 洲象的生殖狀態,而有利於繁殖管理工作之進行。 |
英文摘要 | Four elephants of unknown age and at different stages of reproduction were used. Their fecal samples were collected once a week for period of 13 months (May 1990-May 1991) and stored at -20 ℃ until assayed. The prog esterone concen- trations in feces were measured by using an enzym immuno assay after extration with an organic solvent. The results indicated varying stages of reproductive sta- tus including 1 pregnancy, 2 normal cycling animals and 1 animal run through pu- berty during the study. Elephant #1 was found to have consistantly high fecal progesterone (100-400ng/g) during the collection period, indicating pregnancy. This was later confirmed by a subsequent abortion. Elephant #2 and #3 were found to have fecal progesterone that fluctuated between 20-70 ng/g at the fol- licular phase and between 130-200 ng/g atthe luteal phase, indicating normal cycl- ing. The oestrous cycle was determined to be 102 ± 10 days. Elephant #4 was the youngest. Her fecal progesterone levels were kept between 20-70 ng.g before April 1991 and risen to 150-230 ng/g in May 1991. Probably she experienced puberty. These findings revealed that the fecal progesterone levels of African elephants in captivity are much lower than most animals but still extremely useful for the monitoring of their reproductive status. |
本系統中英文摘要資訊取自各篇刊載內容。