Laparoscopic Pregnancy Diagnosis and Uterine Fluid Recovery in Swine

Wildt, David E.; Morcom, C. B.; Dukelow, W. Richard

doi:10.1530/jrf.0.0440301

Cited by 24 publications

(6 citation statements)

References 9 publications

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“…The presence of small, dark circles in the ultrasound image of pregnant sows corresponds to fluid accumulating in the allantois of developing embryos. It has been shown that the volume of allantoic fluid per embryo increases from <3.0 ml on day 17 to more than 200 ml on day 30, and that significant variation exists among sows in terms of the amount of fluid associated with each embryo prior to day 25 (Wildt et al. 1975; Knight et al.…”

Section: Discussionmentioning

confidence: 99%

Accuracy of Trans‐abdominal Ultrasound Pregnancy Diagnosis in Sows using a Linear or Sector Probe

Maes

Dewulf

Vanderhaeghe

et al. 2006

Reprod Domestic Animals

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The assessment of an early and reliable pregnancy diagnosis in sows is very important for limiting the number of non-productive days in sow herds. The aim of the present study was to investigate the accuracy of trans-abdominal ultrasound detection for early pregnancy diagnosis in sows under field conditions. Particular attention was paid to the time when a reliable diagnosis can be made, and to possible differences between two commonly used types of scanners. In total, 202 sows from two herds were tested daily with scanners A (linear transducer of 5 MHz) and B (sector transducer of 3.5 MHz) from day 16 until 25 after insemination. Ninety-three percentage of the sows were pregnant 36 days after insemination. Using ultrasound, the first pregnancy could be detected already 18 days after insemination. The sensitivity, specificity and overall accuracy were higher than 95% from day 24 (scanner A) or day 23 (scanner B) post-insemination onwards. The positive predictive values from day 19 onwards were consistently higher than 95% with both types of scanners, whereas the negative predictive values were consistently low for both scanners during the entire period. The sensitivity of testing tended to be slightly lower in sows with a litter size of <10 total born piglets, compared to sows with 10 or more piglets. In conclusion, pregnancy diagnosis in sows using trans-abdominal ultrasound testing can be assessed quickly and reliably under field conditions from day 23 of gestation onwards. Predictive values of positive test results were high in these herds, whereas those of negative test results were low. This implies that sows with a negative test result early in pregnancy should be retested later.

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Section: Discussionmentioning

confidence: 99%

Accuracy of Trans‐abdominal Ultrasound Pregnancy Diagnosis in Sows using a Linear or Sector Probe

Maes

Dewulf

Vanderhaeghe

et al. 2006

Reprod Domestic Animals

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“…Laparoscopy evolved in a reverse manner, with the extensive development of practical, clinically important techniques relating to ovarian biopsy, cyst removal, pregnancy diagnosis, implantation site quantification, recovery of uterine fluid, and sterilization by ligation of the oviducts in many laboratory animal species (Dukelow et al, 1971;Dukelow and Ariga, 1976;Dukelow, 1978;Wildt et al, 1975;Morcom and Dukelow, 1980). Traditionally, the basic research scientists have made discoveries and developed techniques that were then applied to clinical problems.…”

Section: A Laparoscopymentioning

confidence: 99%

Techniques of Experimentation

Talcott

Akers

Marini

2015

Laboratory Animal Medicine

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“…Uterine fluid recovery in swine. We have used laparoscopy to collect uterine fluid throughout the estrous cycle of the pig [63]. An accessory cannula is inserted laterally from the midline and the uterus held in position with laparoscopic grasping forceps.…”

Section: Techniquesmentioning

confidence: 99%

Laparoscopic Techniques for Biomédical Research

Dukelow¹,

Ariga²

1976

J Med Primatol

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The techniques used for laparoscopic observation of reproductive systems in 23 species are described. The application of various techniques to biomedical research is examined, and the methods used for laparoscopic follicular aspiration and injection, as well as the techniques for uterine flushing collection from swine and nonhuman primates, and oviductal deposition of test solutions are described.

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Laparoscopic Pregnancy Diagnosis and Uterine Fluid Recovery in Swine

Cited by 24 publications

References 9 publications

Accuracy of Trans‐abdominal Ultrasound Pregnancy Diagnosis in Sows using a Linear or Sector Probe

Accuracy of Trans‐abdominal Ultrasound Pregnancy Diagnosis in Sows using a Linear or Sector Probe

Techniques of Experimentation

Laparoscopic Techniques for Biomédical Research

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