Uterine Pathology in Bovine Infertility

Dawson, F. L. M.

doi:10.1530/jrf.0.0050397

Cited by 20 publications

(7 citation statements)

References 4 publications

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“…The genital tract was normal in 11 of the animals, but 3 exhibited chronic endometritis and two had chronic endometritis and unilateral endosalpingitis. The appear¬ ance of the genital tract lesions mentioned in this paper in general conformed to previous descriptions (Dawson, 1958(Dawson, , 1963. No bacteria were recovered from the oviducts of any animal in this group, and uterine cultures were negative for 17 of the animals.…”

Section: Nulliparous and Primiparous Cattlesupporting

confidence: 90%

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: Nulliparous and Primiparous Cattlesupporting

confidence: 90%

Reproductive potential in female cattle discarded as infertile

Dawson¹

1977

Reproduction

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“…Thus, it: is suggested that these toxins facilitate tissue invasion by A . pyogenes which in turn produces growth enhancement factor for F. necrophorum, and possible growth stimulating-factor for the species of Bacteroides which seem to have unusual potent lipopolysaccharide molecules that may, in part, account for some of the clinical signs (DAWSON, 1963;GRIFFIN et al, 1974a, b;MESSIER et al, 1984;PRICE and MCCALLUM, 1986;MARKUSFELD, 1993). In addition, B. levii, a common pathogen we found in all RFM animals might produce a collagenase which is suggested to induce more severe infections (PRICE and MCCALLUM, 1986;DOW and JONES, 1987).…”

Section: Discussionmentioning

confidence: 99%

Intrauterine Bacterial Findings in Postpartum Cows with Retained Fetal Membranes

Bekana

Jönsson

Ekman

et al. 1994

Journal of Veterinary Medicine Series A

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Summary Eleven Swedish postpartum cows with retained fetal membranes (RFM) were studied to determine the intrauterine bacterial flora. Bacteriological examination was performed from twice weekly uterine biopsies. A total of 161 biopsies were collected during the first 8 weeks postpartum of which 82 (50.9 %) were found with bacterial growth. Seventy‐one of the 82 bacteria‐positive biopsies (86.6 %) showed mixed infections whereas the remaining 11 (13.4 %) were pure cultures. Generally, a total of 322 isolates belonging to 12 different genera of bacteria, 6 facultative and 6 obligate anaerobic pathogens were identified. Mixed infections were most frequent for Actinomyces pyogenes together with obligate anaerobic bacteria, especially Bacteroides levii/spp. and Fusobacterium necrophorum. All of the studied cows had an infection that involved the first two genera of bacteria, whereas F. necrophorum was found in 8 of the 11 animals. The present work suggests that a possible pathogenic synergism between A. pyogenes and the two main Gram‐negative anaerobes might have caused early endometritis and/or persistent infection.

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“…Paraovarian cyst develops from the vestigial remnant of wolffian body and are not considered to have any adverse effect on reproductive potential of the animals (Dawson, 1963). However, if sufficiently enlarged in size, it can create problem in clinical diagnosis of ovarian lesions per rectum and thus is important from differential diagnosis point of view.…”

Section: Page187mentioning

confidence: 99%