Theriogenology available on line
http://authors.elsevier.com/TrackPaper.html?trk_article=THE12119&trk_surname =Karpas
Marcus, S., Menda, A., Shore, L., Cohen, G., Atweh, E., Friedman, N., Karpas, Z. (2012) A novel method for the diagnosis of bacterial contamination in the anterior vagina of sows based on measurement of biogenic amines by ion mobility spectrometry: A field trial. Theriogenology (In press).
To determine if postpartum subclinical infection occurs in sows, a novel
device was used to diagnose such bacterial contamination of the vagina. The
device was based on the measurement of biogenic amines by ion mobility
spectrometry (IMS). The device is portable and results are obtained within one
minute. Vaginal swabs were taken from 449 sows prior to first- estrus
insemination and 133 (29.6%) had elevated biogenic amines and were considered
positives. Sixty one percent of the sows became pregnant following post weaning
first estrus insemination. Positive scores had no apparent effect on fertility
rate which was 64%. Of the sows that became pregnant 197 (69.1%) were diagnosed
as “negative” and 88 sows (30.9%) were “positive”, of which thirty-seven sows
received treatment with antibiotics and were termed "positive
treated" .
The average live born piglets litter size of the “positives” was 10.02
which was significantly lower (P=0.031) than the "negative" sows
(11.06) while “positive treated” sow average litter size was close to the
"negative" (10.56). In conclusion, it was demonstrated that
subclinical anterior- vaginal bacterial contamination in lactating sows about
two weeks postpartum is a condition that affects sow litter number and could be
determined by the measurement of vaginal biogenic amines with IMS.
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