Ultrasonographic characterization of the ovaries and the uterus in prepubertal and pubertal gilts

In two experiments (EXP), 44 and 52 crossbred gilts (mean age±S.D. and weight±S.D.: 204±22 and 203±9 days, 114±13 and 127±12 kg, respectively, in EXP 1 and 2) from four farms were examined by means of transcutaneous ultrasonography (US) to define the characteristics of the ovaries and the uterus (ec...

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Bibliographic Details
Published in:Theriogenology 2004-06, Vol.61 (9), p.1635-1648
Main Authors: Kauffold, Johannes, Rautenberg, Tanja, Richter, Andreas, Waehner, Martin, Sobiraj, Axel
Format: Article
Language:English
Subjects:
Aging
animal age
Animals
area
Body Weight
Breeding
corpus luteum
Female
follicular development
Gilt
gilts
Organ Size
ovaries
Ovary
Ovary - diagnostic imaging
Ovary - growth & development
puberty
Sensitivity and Specificity
Sexual Maturation
Sexual maturity
Swine
tissue weight
Ultrasonography
Uterus
Uterus - diagnostic imaging
Uterus - growth & development
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Summary:In two experiments (EXP), 44 and 52 crossbred gilts (mean age±S.D. and weight±S.D.: 204±22 and 203±9 days, 114±13 and 127±12 kg, respectively, in EXP 1 and 2) from four farms were examined by means of transcutaneous ultrasonography (US) to define the characteristics of the ovaries and the uterus (echotexture, size) and to investigate the appropriateness of US to determine sexual maturity. Gilts were judged as prepubertal [PRE; follicles 2–5 mm (F 2–5) only] or pubertal [PUB; F 7–8, corpora lutea (CL), corpora haemorrhagica (CH)] at the first (PUB-1; EXP 1) or a subsequent estrous cycle [PUB-2; additionally corpora albicantia (CA); EXP 1] by US, and results were verified by postmortem examination (EXP 1), or progesterone analysis and detection of estrous signs (EXP 2). Accuracy of US was 100% for PRE and PUB (both EXP) and 77.3% for PUB-1 and PUB-2 (EXP 1). PRE and PUB with CL/CH had uteri of homogeneous, PUB with F 7–8 of heterogeneous echotexture. The size was expressed as the mean sectional area (SAsono) of 2–5 cross-sections of the uterine horns (calculated by multiplication of 1/2 the maximum×the minimum dimension of the cross-sections× π). SAsono corresponded with the sectional area of postmortem dissected transverse uterine segments relatively with r=0.92 ( P
ISSN:0093-691X
1879-3231
DOI:10.1016/j.theriogenology.2003.09.012