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The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus >
No.28 (1981/11) >

 
Title :沖縄肉用山羊の繁殖状況について(畜産学科)
Title alternative :On the reproduction in Okinawa meat goats (Department of Animal Science)
Authors :渡嘉敷, 綏宝
仲田, 正
古謝, 瑞幸
Authors alternative :Tokashiki, Suiho
Nakada, Tadashi
Koja, Zuiko
Issue Date :30-Nov-1981
Abstract :沖縄肉用山羊の繁殖状況についてと場より採取した材料によって妊娠山羊の交尾月ならびに非妊娠山羊の卵巣機能の状態から調べた。同時に妊娠中の発情の可能性についても調べた。結果は次の通りである。(1)交尾は周年行われているが, その中でも特に8月から12月にかけて盛んになり, この間に全頭数の70%に交尾が行われた。(2)卵巣機能が休止状態にある山羊は繁殖活動の活発な時に少なく, 不活発な時に多く観察された。(3)卵巣において成熟卵胞を有する山羊は妊娠前期に多く出現し, 以後妊娠が進むにつれてその数が減少する傾向を示した。
Changes throughout the year in reproductive activities of Okinawa meat goat were investigated. The time of mating was estimated fromfetal length in pregnant goats and the conditions of ovaries in non-pregnant goats were observed at slaughter. In addition, the possibilities of occurrence of heat during pregnancy were also examined. The results obtained are as follows : 1. Matings have been occurred more or less throughout the year, and especially in August to December they have been done more frequently as much as 61 (70%) out of 87 goats. 2. Goats with ovaries in abeyance were rarely observed at the active period of mating except for August, while they were frequently observed at the rest of the year. 3. Matured follicles were observed in large number of goats at early stage of pregnancy, while the goats with matured follicles diminished in number at middle and late stages of gestation.
Type Local :紀要論文
ISSN :0370-4246
Publisher :琉球大学農学部
URI :http://hdl.handle.net/20.500.12000/4061
Citation :琉球大学農学部学術報告 = The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus no.28 p.183 -186
Appears in Collections:No.28 (1981/11)

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