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Prevalence of subclinical endometritis in two dairy farms in Iran and consequences for further fertility
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Dini1, M Farhoodi2,
G Akbari1, M Hostens3, O Bogado Pascottini3,
O Ataei3, G Opsomer3and
MH Fazeli4 |
1Department of Clinical Sciences, Faculty of
Veterinary Medicine, Science And Research Branch, Islamic Azad
University, Tehran, Iran; 2Department of Clinical Sciences,
Faculty of Veterinary Medicine, Islamic Azad University, Karaj Branch,
Alborz, Iran; 3Department of Reproduction, Obstetrics and
Herd Health, Faculty of Veterinary Medicine, Ghent University,
Salisburylaan 133, 9820 Merelbeke, Belgium; 4Department of
Clinical Sciences, Faculty of Veterinary Medicine, Islamic Azad
University, Shahr-e-kord Branch, Shahr-e-kord, Iran
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Abstract |
A high level of
reproductive efficiency requires each cow to be bred successfully and
calve with a calving interval that maximizes the output of milk within
the herd. Subclinical endometritis (SCE) has been defined as the
presence of an elevated number of polymorphonuclear cells (PMNs) within
the uterine lumen, without any clinical signs. This condition is
relatively prevalent in postpartum dairy cows and results in substantial
economic losses due to decreases in fertility and on longer-term milk
production. In literature, different prevalence numbers have been
described for this postpartum condition, although it is currently not
clear what the prevalence of this condition is in modern dairy herds in
Iran. Therefore, Holstein cows (N=150) from 2 commercial dairy herds
that had calved without any difficulty and had passed a normal puerperal
period, were sampled at 30±3 days post partum by the low-volume uterine
lavage method. Samples were centrifuged at 700
g for 5 minutes and one drop
of sediment was subsequently streaked on a glass slide. Samples were
stained with Diff-Quick so that present cells could be counted and
percentages of PMNs calculated. In the present study, a threshold of 18%
was used to diagnose the disease. Due to low sample quality, 42 cows
were excluded from the study. Also 4 cows were culled before the end of
the study. Mean prevalence of subclinical endometritis at day 30 was
38.5%, while in farm 1 this prevalence was 27% and in farm 2, 47%. Cows,
in which SCE was diagnosed, showed an increase in calving to first
service (73 vs. 66 days; P=0.097) and calving to conception interval
(118 vs. 105 days; P=0.3 (positive vs. negative, respectively). In
conclusion, the results of the current study show a high prevalence of
uterine inflammation in clinically normal cows in two dairy herds in
Iran. Negative impacts on fertility were demonstrated by the increase in
the time to first service and the time to conception.
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Keywords:
Subclinical endometritis;
uterine inflammation; dairy cow |
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To cite this article:
Dini P,
M Farhoodi, G Akbari, M
Hostens, O Bogado Pascottini, O Ataei, G Opsomer
and MH Fazeli,
2015.
Prevalence of subclinical endometritis in two dairy farms in Iran and
consequences for further fertility.
Res.
Opin.
Anim. Vet. Sci., 5(3): 148-153. |
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