Publikationsdatenbank

The effect of bovine subclinical endometritis after insemination on first service conception rate (2007)

Art

Vortrag

Autoren

Kaufmann, T. B.

Drillich, M.

Tenhagen, B. A.

Forderung, D.

Heuwieser, W.

Kongress

40th Annual Conference of Physiology and Pathology of Reproduction and 32nd Mutual Conference on Veterinary and Human Reproductive Medicine

Berlin, 22. – 23.02.2007

Quelle

Reproduction in Domestic Animals, 42, Suppl. 1 (2007), 14

Sprache

Englisch

Kontakt

Tierklinik für Fortpflanzung

Königsweg 65
Haus 27
14163 Berlin
+49 30 838 62618
fortpflanzungsklinik@vetmed.fu-berlin.de

Abstract / Zusammenfassung

The objective of the study was to investigate the occurrence
of bovine subclinical endometritis four hours after artificial
insemination (A.I.) and its effect on first service conception
rate (FSCR). A total of 169 Holstein-Friesian cows with no
clinical signs of endometritis at A.I. were enrolled. All cows
were examined four hours after first A.I. Endometrial
samples were collected from the uterus by using the
Cytobrush technique. The presence of polymorphonuclear
cells (PMN) was indicative of subclinical endometritis.
Animals were categorized into 3 groups according to the
proportion of PMN in the endometrial sample: 0 % PMN
(n=90), 1-15 % PMN (n=53) and >15 % PMN (n=26). The
overall FSCR was 44.4 %. Binary logistic regression was
used to analyse the odds of pregnancy at first service.
Variables included in the model were parity
(primiparous/multiparous) and PMN group. Cows in
Group 1-15 % PMN (FSCR 62.3 %) had significantly
higher odds of conception (OR = 3.8 and 2.4, respectively)
than cows in Groups >15 % PMN (FSCR 26.9 %) and 0 %
PMN (FSCR 38.9 %). The difference between the latter
groups was not significant. In conclusion, based on our
findings, subclinical endometritis diagnosed four hours after
insemination does occur. The findings indicate that a
moderate elevation of the proportion of PMN (1-15 %
PMN) four hours after A.I. favoured conception. No PMN
reaction at A.I. (0 % PMN) or strongly elevated percentages
of PMN (>15 % PMN) increased the risk of conception
failure. Further research is required to determine the
physiological level of PMN-reaction to A.I. in cattle.