膣内留置型プロジェステロン製剤を用いた経産豚の発情同期化 Synchronization of the Estrous Cycle in Sows Using a Controlled Intravaginal Drug-releasing Device

この論文にアクセスする

この論文をさがす

著者

抄録

ランドレース種経産豚13頭をA群(5頭),B群(4頭)およびC(4頭)の3群に分け,緬山羊用膣内留置型プロジェステロン(P<SUB>4</SUB>)製剤(CIDR-G)を1個または2個7日間挿入し,除去後の発情誘起の検討を行った.その結果,CIDR-Gを2個挿入し除去後PGF<SUB>2α</SUB>(クロプロステノール,0.2625 mg)を陰部に投与したA群では3∼5日以内に5頭(100%)が,1個挿入したC群では2∼4日以内に4頭(100%)の発情を確認した.一方,CIDR-G2個挿入し除去後PGF<SUB>2α</SUB>無投与のB群では,除去後3日目に4頭中1頭(25%)のみで発情が確認された.P<SUB>4</SUB>濃度は,A群およびC群共にCIDR-G挿入後5日目にかけて上昇していた.5日目のP<SUB>4</SUB>濃度は,挿入前の値と比較して有意に上昇していた(p<0.05).CIDR-Gの挿入個数によるP<SUB>4</SUB>濃度の差は認められなかった.このことから,CIDR-Gを経産豚の発情誘起に応用する場合,CIDR-Gを7日間留置し,除去後PGF<SUB>2α</SUB>を投与することで,高率に発情が発現する可能性が示唆された.

The aim of this study was to determine the effectiveness of an intravaginal drug-releasing device commercially produced for use in goats and sheep (CIDR-G device) at inducing estrus in sows. Thirteen Landrace sows were used in the this study, and the sows were randomly divided into three groups: group A (n=5), group B (n=4) and group C (n=4). Two CIDR-G devices were inserted into the vagina of each sow in groups A and B, and one CIDR-G device was inserted into the vagina of each sow in group C. The device was removed from each sow on the seventh day after insertion, and 0.2625 mg of PGF<SUB>2α</SUB> was applied to the vulva of each sow in groups A and C. All five sows in group A and all four sows in group C, the two groups of sows that were administered PGF<SUB>2α</SUB>, showed onset of estrus 3-5 days and 2-4 days after removal of the CIDR-G device, respectively. Three of the four sows in group C showed onset of estrus on the second day after removal of the device. On the other hand, onset of estrus was observed (on day 3 after removal of the device) in only one of the four sows in group B, the group of sows that were not administered PGF<SUB>2α</SUB>. Saliva progesterone concentrations continued to rise in both groups A and C after insertion of the device, and the saliva concentrations of progesterone on day 5 after insertion in these two groups were significantly higher than those just prior to insertion of the device (p<0.05). The number of devices inserted had no effect on the saliva progesterone concentration. The results of this study showed that insertion of a CIDR-G device for a period of seven days followed by application of PGF<SUB>2α</SUB> to the vulva is effective for induction of estrus in the swine.

収録刊行物

  • Journal of mammalian ova research = 日本哺乳動物卵子学会誌

    Journal of mammalian ova research = 日本哺乳動物卵子学会誌 18(3), 119-122, 2001-10-01

    日本哺乳動物卵子学会

参考文献:  15件中 1-15件 を表示

各種コード

  • NII論文ID(NAID)
    10008024554
  • NII書誌ID(NCID)
    AN10548943
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13417738
  • NDL 記事登録ID
    5982099
  • NDL 雑誌分類
    ZR4(科学技術--生物学--動物)
  • NDL 請求記号
    Z18-1673
  • データ提供元
    CJP書誌  NDL  IR  J-STAGE 
ページトップへ