頁籤選單縮合
題名 | 乏情季節與繁殖季節乳羊誘導發情與受胎率之比較=Comparison on Induction of Estrus and Fertility Rate of Dairy Goat in and out of Breeding Season |
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作者 | 吳錦賢; 孔瑞琪; Wu, Jiin-shyan; Kung, Jui-chi; |
期刊 | 畜產研究 |
出版日期 | 20050300 |
卷期 | 38:1 2005.03[民94.03] |
頁次 | 頁29-35 |
分類號 | 437.58 |
語文 | chi |
關鍵詞 | 乳羊; 孕酮; 孕馬血清激性腺素; 乏情季節; Dairy goat; Progesterone; PMSG; Out of breeding season; |
中文摘要 | 產後170天以上,體況評分在2.5至3.5之間的經產乳山羊母羊689頭,分成繁殖季節(9月-隔年2月)與乏情季節(3-8月)兩組,使用CIDR、PMSG及PGF2a等外源性內泌素處理,在CIDR移出後11小時開始,以1試情公羊對1母羊的方式,每2小時做發情觀察,直到CIDR移出後30小時為止,記錄母羊穩定發情時間,並根據不同穩定發情時間,相隔24小時後用冷凍精液實施人工授精。試驗結果,繁殖季節母羊在CDIR移出後30小時內的穩定發情率為85.3%,乏情季節母羊則為87.5%,兩者無顯著差異。前者穩定發情集中在CIDR移出後15至22小時,後者則較分散在13至24小時。兩組受胎率分別為59.5%與52.0%,兩者亦無顯著差異。但在繁殖季節,以CIDR移出後定發情時間發生在15至20小時之間的母羊,亦即CIDR移出後39至44小時之間,期受胎率較高,範圍為54.5至71.4%。而乏情季節處理之母羊,則定發情時間在13至16小時之間,亦即CIDR移出後37至40小時之間較高,受胎率範圍為61.9至70.0%。顯示不管繁殖季節或乏情季節經內泌素處理的母羊,均可得到高比例的母羊發情率及可被接受的人工授精受胎率。 |
英文摘要 | Six hundred and eighty nine multiparous does 170 days postpartum, with body condition scores between 2.5 and 3.5, were divided into two groups- in breeding season (September-February) and out to breeding season (March-August) Exogenous hormones of P4 (CIDR), PMSG and PGF2awere used. Standing estrus occurrence of does were recorded by using one teaser buck to one doe from 11-30 hours after CIDR withdrawal. AI was performed 24 hours after the occurrence of standing estrus. Incidences of standing estrus within 30 hours after CIDR withdrawal in and out of breeding season were 85.3% and 87.5%, respectively, which had no significant differences. Does in breeding season showed standing estrus mostly between 15 and 22 hours after CIDR withdrawal, while does out of breeding season showed standing estrus mostly between 13 and 24 hours after CIDR withdrawal. Conception rates of does were 59.5% and 52% for in and out of breeding season. Respectively, which also had no significant differences. Does in breeding season showed standing estrus between 15 and 20 hours after CIDR removal had conception rate of 54.5% of 71.4%. Does out of breeding season showed standing estrus between 13 and 16 hours after CIDR removal had conception rate of 61.9% to 70.0%. As data indicated above, no matter does were in breeding season or out of breeding season could show high incidence of standing estrus and achieve acceptable AI conceptions rates through exogenous hormone treatment. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。