Using Ultrasound for Clinical Observation of the Porcine Ovary Through the Course of the Estrous Cycle and to Monitor Treatment of Ovarian Disease.

Moriyoshi, Masaharu; Sawamura, Tatsuru; Yasuda, Masaaki; Nakao, Toshihiko; Kawata, Keiichiro

doi:10.1262/jrd.42.277

Cited by 6 publications

(6 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…spontaneous estrous cycle until the end of the second diestrus. Only one ovary, i. e. the right ovary, was usually scanned on the assum ption that it would sufficiently reflect the ovarian status or the stage of the estrous cycle (23).…”

Section: Scanning Of the Ovaries For The Determination Of Ovulation Amentioning

confidence: 99%

Feasibility of transabdominal Doppler sonography for studying uterine blood flow characteristics in cycling gilts

Herlt¹,

Stark²,

Sigmarsson³

et al. 2018

Tierarztl Prax Ausg G

View full text Add to dashboard Cite

Summary Objective: To test for the feasibility of transabdominal Doppler sonography (color, power, pulse wave) to define uterine perfusion characteristics throughout the estrous cycle in gilts. Materials and methods: A total of 15 gilts were synchronized for estrus and scanned in their following spontaneous cycle while being restrained in a purpose-designed mobile crate. To define uterine perfusion characteristics, vessels in between and within uterine cross-sections were imaged and recorded as video sequences to be analyzed by PixelFlux® software for perfused area (Amix), blood flow velocity (vmix) and intensity (Imix) as well as resistance (RIvmix) and pulsatility index (PIvmix). Results: Color Doppler sonography proved to be the only feasible technique, as it was less affected by animal movements than power and pulse wave sonography. As determined by color Doppler sonography, all five parameters determined showed specific patterns through the estrous cycle, i. e. Amix, vmix, Imix were high in proestrus, decreased in estrus and remained low in midestrus and most parts of diestrus; RIvmix and PIvmix with inversely paralleled patterns. Conclusion and clinical relevance: This study has demonstrated that transabdominal color Doppler but not power and pulse wave Doppler sonography is feasible to be performed in crate-restrained gilts for studying uterine perfusion characteristics during the estrous cycle, and that changes of uterine perfusion over the course of the estrous cycle can be clearly followed by color Doppler sonography. Results encourage the use of color Doppler sonography for studying i. e. uterine capacity or uterus related infertility such as for cases of clinically unapparent endometritis.

show abstract

Section: Scanning Of the Ovaries For The Determination Of Ovulation Amentioning

confidence: 99%

Feasibility of transabdominal Doppler sonography for studying uterine blood flow characteristics in cycling gilts

Herlt¹,

Stark²,

Sigmarsson³

et al. 2018

Tierarztl Prax Ausg G

View full text Add to dashboard Cite

show abstract

“…Scanning was always done in the morning by one of two investigators (CH and RS). For ovary scanning, only one (i. e. usually the right ovary) was scanned as it is assumed to sufficiently reflect the ovarian status as well as stage of estrous cycle [24]. Based on the ovarian bodies imaged (i. e. follicles of different size, CH and CL), and in accordance with a previous study on the morphology of the ovarian bodies [30], the gilts were allocated to the four stages of the estrous cycle as described by Herlt et al [15]: proestrus, estrus, metestrus and diestrus.…”

Section: Animals and General Study Designmentioning

confidence: 99%

Feasibility of transabdominal Doppler ultrasonography for studying ovarian blood flow characteristics in cycling gilts

Stark

Herlt

Sigmarsson

et al. 2019

Tierarztl Prax Ausg G

View full text Add to dashboard Cite

Objective The aim of this study was to assess ovarian blood flow characteristics by applying transabdominal color Doppler ultrasonography during the course of the estrous cycle in gilts. Materials and methods Estrus and ovulation were synchronized in 15 pubertal gilts. During their consecutive spontaneous estrous cycle the gilts were sonographically scanned daily and ovarian blood flow was determined by imaging perfused areas of the ovarian hilus and the ovarian tissue. Recorded video clips were then analyzed for the parameters perfused area (Amix), blood flow velocity (vmix) as well as resistance (RIvmix) and pulsatility index (PIvmix) using the software PixelFlux®. Results All blood flow parameters showed an estrous cycle dependent course, with Amix and vmix being highest in diestrus, followed by proestrus, while RIvmix and PIvmix patterns were inversely proportional. Conclusion and clinical relevance Transabdominal color Doppler ultrasonography proved feasible to study ovarian perfusion characteristics in pubertal gilts. The ovarian blood flow was dependent on the stage of estrous cycle and highest in diestrus. The results of this study encourage the use of color Doppler ultrasonography to also investigate reasons of ovary-caused infertility including corpus luteum insufficiency or seasonal effects on ovary function.

show abstract

“…Rectal palpation (Bollwahn, 1975;Toriumi et al, 1996), transrectal ultrasonography (Dorka and Plonait, 1995;Moriyoshi et al, 1996;Waberski et al, 1999) and laparoscopy or laparotomy (Schmidt et al, 1995) can be used to diagnose ovarian cysts in sows, but these methods are not common in practice. However, some authors favour transrectal scanning for assessing the ovaries (Soede et al, 1992;Knox and Rodriguez-Zas, 2001).…”

Section: Treatment Of Ovarian Cysts In Sows -A Field Trialmentioning

confidence: 99%

Treatment of ovarian cysts in sows - a field trial

Čech¹,

Doležel²

2007

Vet. Med. - Czech

View full text Add to dashboard Cite

Different procedures of treatment of large follicular ovarian cysts in 177 sows using GnRH, hCG and PGF2α are evaluated in this study. Ovarian cysts were diagnosed by transcutaneous ultrasonography, which was a part of routine pregnancy diagnosis. No treatment was performed in the control group (Group 1, n = 29); the method of treatment used in the other groups immediately after the diagnosis was intramuscular administration of lecirelin in doses 50 µg (Group 2, n = 28), 100 µg (Group 3, n = 27) and 200 µg divided into 2 equal doses administered at a 12-hour interval (Group 4, n = 25) and of hCG in doses 1 500 IU (Group 5, n = 23), 3 000 IU (Group 6, n = 21), and 250 µg of cloprostenol (Group 7, n = 24). Insemination rate (IR), conception rate (CR) in inseminated sows, pregnancy rate (PR = recovery rate), treatment-insemination interval (TII) and treatment-pregnancy interval (TPI) within 42 days after the initial examination were evaluated. In addition PR in groups of sows divided according to parity (1–3, 4–6 and ≥ 7) were also evaluated. IR and PR were higher in Group 4 (84.0% and 44.0%) and lower in Group 1 (17.2% and 6.9%) in comparison with the other groups (P < 0.001 and P < 0.05). CR, TII and TPI did not differ between the experimental groups. PR were similar in sows with different parity. The study proved a positive response in sows with large follicular ovarian cysts to the treatment consisting of 2 administrations of 100 µg GnRH at a 12-hour interval.

show abstract

Using Ultrasound for Clinical Observation of the Porcine Ovary Through the Course of the Estrous Cycle and to Monitor Treatment of Ovarian Disease.

Cited by 6 publications

References 15 publications

Feasibility of transabdominal Doppler sonography for studying uterine blood flow characteristics in cycling gilts

Feasibility of transabdominal Doppler sonography for studying uterine blood flow characteristics in cycling gilts

Feasibility of transabdominal Doppler ultrasonography for studying ovarian blood flow characteristics in cycling gilts

Treatment of ovarian cysts in sows - a field trial

Contact Info

Product

Resources

About