[Retrospective study of the fertility outlook in cows after caesarean section].

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This retrospective study of 207 cows found that endometritis and retained fetal membranes negatively impact fertility, with cows delivering dead calves exhibiting higher endometritis rates and lower subsequent pregnancy success.

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This retrospective study analyzed fertility outcomes in 207 cows following caesarean sections performed between 1998 and 2000 to identify factors influencing subsequent pregnancy rates. The results indicated that 59% of inseminated cows became pregnant, with significantly higher success rates for those delivering living calves compared to those with stillbirths. Postpartum complications such as retained fetal membranes and endometritis negatively impacted fertility, with endometritis occurring twice as frequently after the birth of a dead calf and reducing subsequent conception rates to only 30%. The paper does not explicitly discuss endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.

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Abstract

Evaluating the possibility of performing a caesarean section on a cow with dystocia, the economic value of the animal usually plays a central role. The aim of this retrospective study was to analyse and to determine possible factors influencing the fertility. In 1998, 1999 and the first half-year of 2000 a total of 207 cows had a caesarean section. 68% of the inseminated cows which gave birth to a living calf became pregnant again, whereas only 46% of the cows with a dead calf were successfully reinseminated. Thus, 59% of all inseminated cows became pregnant, 2.5% of them had an abortion. The occurrence of retained fetal membranes or of endometritis has been shown to have negative effects on fertility. Only 30% of subsequent inseminations were successful in cows which had suffered from endometritis. The probability of being affected by endometritis was twice as high after birth of a dead calf than after a living calf.
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Wissenschaft | Science Retrospektive Studie der Fruchtbarkeitsaussichten bei Kühen nach Sectio caesarea Download full text: English Evaluating the possibility of performing a caesarean section on a cow with dystocia, the economic value of the animal usually plays a central role. The aim of this retrospective study was to analyse and to determine possible factors influencing the fertility. In 1998, 1999 and the first half-year of 2000 a total of 207 cows had a caesarean section. 68% of the inseminated cows which gave birth to a living calf became pregnant again, whereas only 46% of the cows with a dead calf were successfully reinseminated. Thus, 59% of all inseminated cows became pregnant, 2.5% of them had an abortion. The occurrence of retained fetal membranes or of endometritis has been shown to have negative effects on fertility. Only 30% of subsequent inseminations were successful in cows which had suffered from endometritis. The probability of being affected by endometritis was twice as high after birth of a dead calf than after a living calf. Keywords: cow,caesarean section,retained fetal membranes,endometritis,insemination,pregnancy rate Deutsch Retrospektive Studie der Fruchtbarkeitsaussichten bei Kühen nach Sectio caesareaBei der Abwägung, ob bei einer Kuh aufgrund einer Geburtsstörung ein Kaiserschnitt durchgeführt werden soll, spielen die weiteren Nutzungsaussichten eine zentrale Rolle. In dieser retrospektiven Studie sollten mögliche Einflussfaktoren auf die Fruchtbarkeitsaussichten festgestellt werden. In den Jahren 1998, 1999 und im ersten Halbjahr 2000 wurde bei 207 Kühe eine Sectio caesarea durchgeführt. 68% der wiederbelegten Tiere, bei denen ein lebendes Kalb entwickelt wurde, wurden erneut tragend. War das Kalb bereits tot, wurden nur noch 46% erneut trächtig. Somit waren insgesamt 59% der wiederbelegten Kühe erneut gravid. 2.5% von diesen abortierten. Auch das Auftreten einer Retentio secundinarum oder einer Endometritis hatte einen Einfluss auf die spätere Fertilität, da nur 30% der Kühe, die an einer Gebärmutterentzündung erkrankten, wieder tragend wurden. Die Endometritis-Erkrankungsrate war doppelt so hoch, wenn ein totes Kalb entwickelt wurde, als nach der Entwicklung eines lebenden Kalbes. Schlüsselwörter: Kuh,Sectio caesarea,Retentio secundinarum,Endometritis,Besamung,Trächtigkeitsrate Français Au moment de prendre la décision si une césarienne doit être effectuée à cause d´un vêlage difficile, les perspectives de l´utilisation ultérieure de l´animal jouent un rôle primordial. Dans cette étude rétrospective, les facteurs qui influencent les chances de fertilité ont été déterminés. Au cours des années 1998, 1999 et de la première moitié de 2000, des césariennes ont été effectuées chez 207 vaches. 68% des vaches à nouveau inséminées ayant délivré un veau vivant sont devenues portantes. Dans le cas où le veau était déjà mort, seulement 46% sont devenues portantes. Ainsi, seulement 59% des vaches à nouveau inséminées sont devenues portantes. 2.5% de ces vaches ont avorté. De plus, la présence d´une rétention placentaire ou d´une endométrite a eu une influence sur la fertilité ultérieure puisque seulement 30% des vaches, qui ont eu une inflammation de la matrice, sont devenues à nouveau portantes. L´incidence de l´endométrite était deux fois plus élevée lorsqu´un veau mort avait été obtenu en comparaison avec un veau vivant. Italiano L´utilizzo futuro di una mucca è un fattore d´importanza centrale nel decidere l´esecuzione di un taglio cesareo in una mucca con problemi legati al parto. In questo studio retrospettivo sono stati determinati i fattori che potrebbero influenzare la fertilità. 207 mucche sono state sottoposte a taglio cesareo durante gli anni 1998, 1999 e nel primo semestre del 2000. Nel 68% dei casi, le mucche inseminate dopo avere dato alla luce tramite taglio cesareo un vitello vivo, sono diventate di nuovo gravide. Se il vitello era morto, solo nel 46% dei casi le mucche sono diventate gravide. Perciò nel 59% dei casi le mucche inseminate sono diventate nuovamente gravide. Nel 2.5% dei casi queste mucche hanno abortito. Anche il manifestarsi di una retentio secundinarum o di una endometrite hanno influenzato la fertilità futura; infatti soltanto nel 30% dei casi le mucche affette da endometrite sono diventate nuovamente gravide. Nelle mucche che avevano partorito un vitello morto, il numero di mucche colpite da endometrite era doppio rispetto alle mucche nelle quali si era sviluppato un vitello vivo.

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