Bovine Endometritis: a Review

Dawson, F. L. M.

doi:10.1016/s0007-1935(17)43903-0

Cited by 12 publications

(4 citation statements)

References 5 publications

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“…The structural lesions of the uterus and oviducts of the cows in this study are of a type known to be attributable to Corynebacterium pyogenes (Dawson, 1960;Rommel, 1961). Lovell (1943) has postulated an 'X-factor' as potentiating the pathogenicity of this organism: poor feed conversion, stress from successive closely-spaced lactations over a period of years, and skeletal immaturity could all con¬ tribute to such an 'X-factor' (Dawson, 1960).…”

Section: Multiparous Cowsmentioning

confidence: 69%

Reproductive potential in female cattle discarded as infertile

Dawson¹

1977

Reproduction

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Summary. Dairy cattle were served at consecutive heats up to three times each; they were then slaughtered, and the genital tracts were examined.Seventy-four cattle had been discarded from herds because they had not bred; 14 had never calved, and 14 were primiparous. Of these 28 animals, 12 (43 %) conceived readily, and had normal pregnancies; normal genital tracts were found at slaughter. Eleven of the 16 animals that did not conceive had normal genitalia. The remaining 46 animals were mature cows, with a mean parity of 4\m=.\9;9 (19\m=.\6%) became pregnant and had live embryos at autopsy, while in 7 other cows (15\m=.\2%)conception had been followed by embryonic death. Five of the uteri associated with these 16 conceptions showed pathological changes. Thirty of the 46 mature cows (65 %) did not conceive; 12 (40%) had normal genitalia, and 18 (60%) showed severe pathological changes in the uterus and/or oviduct. Nine 'control' cows discarded because of poor milk yield were infertile, but 5 cows, discarded for various other reasons, all bred normally.

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Section: Multiparous Cowsmentioning

confidence: 69%

Reproductive potential in female cattle discarded as infertile

Dawson¹

1977

Reproduction

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“…sind eben noch mit Graviditat vereinbar (MOSS u. Mitarb., 1956;DAWSON, 1960DAWSON, , 1961ANDRESEN/~OHLENZ, 1971), was bei der Abgrenzung Schwierigkeiten bereitet. Aufschlul3reich diirften bioptische Untersuchungen, zeitlich moglichst nahe an der Belegung, sein.…”

Section: Einteilung Der Falle Nach D E M Grad Der Veranderungenunclassified

Endometritis beim Rind aus klinischer, pathologisch‐anatomischer und histologischer Sicht

Theus

Küpfer

Leiser

et al. 1979

Zentralblatt für Veterinärmedizin Reihe A

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Zusammenfassung An 30 ausgewählten Kühen wird das Endometrium pathologisch‐anatomisch und histologisch untersucht sowie die Befunde mit den klinisch‐anamnestischen Angaben verglichen. Sowohl Tiere mit Endometritis, Kontrollkühe und sogenannt symptomlos sterile Tiere sind in die Untersuchung mit einbezogen. Die makroskopische Beurteilung, gestützt auf Hyperämie im Endometrium, ergibt brauchbare, jedoch von der klinischen Diagnose in vielen Fällen abweichende Resultate. Die histologischen Befunde werden anhand von verschiedenen Kriterien eingehend beschrieben. Geringgradige pathologische Veränderungen, die zum Teil weder dem normalen, noch dem leichtgradig veränderten Zustand des Endometrium endgültig zuzuordnen sind, geben besonders Anlaß zu Diskussion im Hinblick auf Konzeption und Gravidität. Die klinische Endometritis‐diagnostik ist zumindest bei Problemfällen wenig zuverlässig, findet sich doch bei unfruchtbaren Kühen auch ohne entsprechende klinische Befunde histologisch häufig ein erkranktes Endometrium. Zur Abklärung sind vermehrt Biopsien notwendig. Dabei wird die Entnahme je einer Biopsie aus den caudalen Uterushornabschnitten links und rechts empfohlen. Summary Endometritis in cattle from the clinical, pathological and histological angle The endometrium in 30 selected cows was examined pathologically and histologically and the findings compared with the clinical history. Animals with endometritis, control cows and cows with so‐called asymptomatic infertility were included. The macroscopic findings, based on endometrial hyperaemia, gave useful results but they differed in many instances from the clinical diagnostic findings. The histological findings are described on the basis of various criteria. Mild pathological changes which could be classed as either normal or slightly pathological give rise to particular discussion in relation to conception and pregnancy. Diagnosis of endometritis clinically is least satisfactory in such “problem” cases; infertile cows with no clinical findings often show histologically a diseased endometrium. Repeated biopsies are necessary to clear up such cases. For this purpose biopsies from both right and left uterine horns are recommended. Résumé Endométrite chez le bovin du point de vue clinique, anatomo‐pathologique et histologique On a examiné anatomo‐pathologiquement et histologiquement l'endometrium de 30 vaches choisies et comparé les résultats avec les données cliniques. L'examen macroscopique basé sur une hyperhémie dans l'endomètre a donné des résultats utilisables mais qui divergeaient toutefois dans beaucoup de cas de l'examen clinique. Les résultats histologiques sont décrits sur la base de différents critères. Des lésions pathologiques très faibles qui n'ont pu être attribut́es à un état normal ou légèrement pathologique de l'endomètre ont donné lieu à une discussion concernant la conception et la gestation. Le diagnostic clinique d'endométrite est moins constant dans des cas «problème»: on rencontre aussi fréquemment un endomètre histologiquement pathologique che...

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“…The organisms isolated most frequently have been, in descending order of frequency, staphylococci, Escherichia coli, streptococci, anthracoids, Bacillus proteus, Pseudomonas pyocyanea, and Neisseria species (Dawson, 1960). Furthermore Gunter et al (1955) maintained that successive samples from "difficult breeders"…”

Section: Present State Of Knowledgementioning

confidence: 99%

“…In the literature on bovine infertility the term endometritis is loosely employed to describe a variety of conditions including those which should more properly be called metritis or pyometra (see : Dawson, 1960;Hartigan, 1977). The inclusion in several surveys of cows with clinically detectable uterine pathology makes it difficult to assess the relevance of much of the published data to the problem of the clinically normal repeat-breeder cow.…”

Section: Bacteria Which Induce Chronic Endometritis and Infertilitymentioning

confidence: 99%

The role of non-specific uterine infection in the infertility of clinically normal repeat-breeder cows

Hartigan

1977

Vet Res Commun

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Hartigan, P.J., 1978. The role of non-specific uterine infection in the infertility of clinically normal repeat-breeder cows. Vet. Sci. Commun., I: 307-321.The role of non-specific bacteria in the infertility of clinically normal repeat-breeder cows is reviewed, and data are presented from a recent study in which bacteriological and histological samples were taken from the uteri of dairy cows at intervals during the non-gravid period.The evidence does not support the view that endometritis is an important cause of this infertility.In the absence of accurate counts 6f the bacteria present in the uterus at the time of service and during the subsequent oestrous cycle, it is impossible to determine whether pathogenic bacteria cause the infertility by injuring the gametes or the developing conceptus.A comprehensive quantitative study is needed of the microbiology of the uterus of the repeatbreeder cow at service and during the subsequent oestrous cycle.

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Bovine Endometritis: a Review

Cited by 12 publications

References 5 publications

Reproductive potential in female cattle discarded as infertile

Reproductive potential in female cattle discarded as infertile

Endometritis beim Rind aus klinischer, pathologisch‐anatomischer und histologischer Sicht

The role of non-specific uterine infection in the infertility of clinically normal repeat-breeder cows

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