Corpus luteum rupture presenting as acute abdomen is an underdiagnosed condition. Though a self-limiting entity, its differentiation from other causes is essential to prevent unnecessary surgical procedures. The radiologist should be aware of the possibility of a ruptured haemorrhagic ovarian cyst in a female of reproductive age group presenting with pelvic pain and a large amount of haemorrhagic ascites. Imaging characteristically reveals a thick-walled cystic structure in the adnexa with internal echoes, focal discontinuity or irregularity of its wall with haemoperitoneum. While sonography is usually indicative of corpus luteum rupture, cross-sectional imaging (CT/MRI) can be used to confirm the diagnosis.
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http://dx.doi.org/10.1259/bjr.20200383 | DOI Listing |
Theriogenology
January 2025
UEL - Universidade Estadual de Londrina, Londrina, PR, Brazil. Electronic address:
This study compared the reproductive performance of three different programs using conventional fixed-time artificial insemination (FTAI), fixed-time embryo transfer (FTET), and their combined use, considering estrus intensity as a criterion for the reproductive program. Brangus multiparous cows (n = 1.100), 40-50 days postpartum, 4-8 years old, and body condition scores 2.
View Article and Find Full Text PDFTheriogenology
January 2025
Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI, 53706, USA. Electronic address:
This study evaluated the efficiency of a rapid resynchronization of ovulation program to allow timed embryo transfer (TET) every 21d in heifer embryo recipients. Holstein heifers (n = 510) had synchronized ovulation using a modified 5d CoSynch program for a TET (D7) after induced ovulation (D0). After TET, heifers were blocked by number of previous TETs and randomized into one of two resynchronization of ovulation programs: Resynch28 (n = 279), a traditional resynch program for TET 35d after previous TET; or ReBreed21-ET, a program designed to allow TET 21d after previous TET.
View Article and Find Full Text PDFAnim Reprod Sci
January 2025
University of Georgia, Department of Animal and Dairy Sciences, Athens, GA 30602, USA. Electronic address:
This study evaluated the impact of luteal blood perfusion (BP) and expression of estrus on pregnancy rates of Bos taurus embryo recipients exposed to fixed-timed embryo transfer (FTET) using a gonadotropin-releasing hormone (GnRH)- and progesterone-based ovulation synchronization protocol. Postpartum beef cows (n = 746) were exposed to a GnRH/progesterone-based ovulation synchronization protocol. Luteal morphometry and BP were assessed using color Doppler ultrasonography 9 days after CIDR removal concurrently with FTET.
View Article and Find Full Text PDFAnim Reprod Sci
January 2025
Agrotecnio Center, Department of Animal Sciences, University of Lleida, Lleida 25198, Spain.
The objectives of this study were: (i) to evaluate the associations between postpartum health disorders, relative increase in walking activity (RIWA) and expression of behavioral estrus intensity captured by pedometers; (ii) to assess associations between RIWA and pregnancy in cows submitted to timed artificial insemination (TAI). Lactating dairy cows (n = 881) were enrolled in the study. Cows were submitted to a 5d TAI protocol with insertion of a progesterone device.
View Article and Find Full Text PDFTheriogenology
January 2025
Department of Animal Sciences, University of Florida, Gainesville, FL, USA. Electronic address:
Implementing accelerometer technologies in beef operations is an alternative to increase precision in estrous detection. We hypothesized that (1) the accelerometer algorithm has similar accuracy in detecting behavioral estrus as does visual observation of pressure-sensitive sensors (estrus patches) in grazing beef cows; (2) variables measured by the accelerometer, such as estrus intensity, are associated with hormonal, ovarian, and uterine variables monitored before, during, and after estrus; and (3) the accelerometer variables are associated with the probability of pregnancy in grazing beef cows submitted to embryo transfer (ET). Fifty cows were fitted with accelerometer and patches to detect estrus after a synchronization protocol in eight subsequent rounds.
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