Ovarian Ultrasonography in the Mare

Miró, Jordi

doi:10.1111/j.1439-0531.2012.02043.x

Cited by 5 publications

(7 citation statements)

References 15 publications

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“…Both plasma progesterone levels and CL vascularization return to basal values 24 h after administration of prostaglandins. However, the size of the CL significantly decreases over the following 3 days (Miro, 2012).…”

Section: Discussionmentioning

confidence: 95%

“…Monitoring follicular dynamics to predict the ovulation time for coordinating breeding or artificial insemination is one of the main clinical applications of ultrasound in routine reproductive practice (Ginther, 2007). The clinical signs of impending ovulation identified with B-mode ultrasound are a deformed preovulatory follicle, increased thickness and echogenicity of the granulosa, and a reduction of the prominence of the anechoic band peripheral to the granulosa band (Miro, 2012). Colour Doppler ultrasound has also been used to predict ovulation time.…”

Section: Follicular Evaluationmentioning

confidence: 99%

“…transitional period) are crucial in the reproductive diagnosis. Pathological ovulation failure occurs in approximately 8.2% of oestrous cycles during the breeding season (Miro, 2012). Follicular diameter and echotexture assessed by grey scale ultrasound do not predict whether a follicle will ovulate or trigger a haemorrhagic follicle.…”

Section: New Applications Of Doppler Ultrasound In Maresmentioning

confidence: 99%

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Advances in the ultrasound diagnosis in equine reproductive medicine: New approaches

Ortega-Ferrusola

Gómez-Arrones

Martín-Cano

et al. 2022

Reprod Domestic Animals

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Ultrasound technology has led to new lines of research in equine reproduction, and it has helped to greatly improve clinical diagnosis and reproductive outcomes in equine practice. This review aims to discuss the potential clinical uses and new approaches of ultrasonography in equine reproduction. Doppler modalities are usually used to evaluate the vascularization of the follicles, corpus luteum (CL), and the uterus in the mare for diagnostic purposes. Inclusion of Doppler ultrasound in artificial insemination and embryo transfer programs could improve the reproductive outcome of these techniques. Better selection of recipients based on CL functionality, early pregnancy diagnosis 7-8 days postovulation of the donor before flushing or diagnosis of mares with endometritis with pathological increases of blood flow are examples of clinical applications in the mare. In the stallion, colour Doppler ultrasound has improved the diagnostic potential of B-mode ultrasound, improving the differential diagnosis of pathologies such as testicular torsion (decrease or absence of blood flow in the cord) and orchitis (increased blood flow in the cord). The incorporation of pulsed Doppler ultrasound into the reproductive evaluation of the stallion has enabled early identification of stallions with testicular dysfunction, thus allowing administration of timely treatment and subsequent improvements of the fertility prognosis for these animals.In addition, this technique has been used in the monitoring of patients undergoing medical and surgical treatments, thus verifying their efficacy. Recently, computerassisted pixel analysis using specific software has been performed in research work in order to semi-quantitatively evaluate the vascularization (colour and power Doppler) and echotexture of different organs. These softwares are now being developed for clinical purposes, as is the case with Ecotext, a computer program developed for the evaluation of testicular echotexture, providing information on testicular functionality.

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Section: Discussionmentioning

confidence: 95%

Section: Follicular Evaluationmentioning

confidence: 99%

Section: New Applications Of Doppler Ultrasound In Maresmentioning

confidence: 99%

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Advances in the ultrasound diagnosis in equine reproductive medicine: New approaches

Ortega-Ferrusola

Gómez-Arrones

Martín-Cano

et al. 2022

Reprod Domestic Animals

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“…While Gastal (15) we reported that ovulation about 10 percent occurs after the end of estrus in mares. The amount of endometrial edema in the uterine lumen is a declining day prior to ovulation; the edema development and regression are related to estrogen concentrations in estrus mares (21)(22)(23)(24).…”

Section: Discussionmentioning

confidence: 99%

Prediction of the ovulation time in estrus mares by different methods

Alrashidy

Rahawy

2022

IJVS

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The study aimed to evaluate the prediction of ovulation time by three different methods body temperature, Dramineski estrus detection apparatus, and observation of the mature follicle daily by ultrasonography in mare's estrus. Sixteen mature cycling mares were used during the breeding season in15 March and15 June of 2021, aged 5-6 years old, at the Nineveh Equestrian club in Mosul city, Iraq. Mares were examined daily by rectal palpation and ultrasound with a 5.5-7 MHz linear-array transducer probe to scan the ovaries and uterus. The mare's follicle diameter and body temperature were recorded daily in the Dramineski estrus detection apparatus to predict ovulation when the data was up to 400 degrees. The result showed that the body temperature was increased significantly from the 1 st day to the third day of estrus at P<0.05, Dramineski estrus exhibited s elevation on the fourth day showing high significant variation at the 1st day to the third day and fourth day of estrus at P<0.01. The ovulation was higher in left than right ovary was recorded 62.5%. 37.5%, respectively. There was an increase in the follicular diameter scores during the third and fourth days of estrus at P<0.01. In conclusion, the combination of Dramineski estrus detection and preovulatory follicle diameter recorded daily is the best method to predict the time of ovulation, mares with a follicle diameter larger than 40 mm predicted the ovulation it has been pregnancy rate up to 75% after natural breeding service for only one time.

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“…Ultrasound monitoring of the follicular activity starts on the third day of estrus, and is performed daily on both ovaries with an ultrasound instrument (Aloka 500 ® ) provided with a 5 MHz linear probe. Ultrasound examination involves locating the preovulatory follicle in generally one of the two ovaries, and determining its diameter each time (Miro, 2012). As soon as the follicular diameter reaches 35 mm, the ultrasound examination becomes thrice a day (7am, 4pm and 11pm).…”

Section: Ovaries Ultrasoundmentioning

confidence: 99%

Variation Factors of the Pregnancy Rate of Arab Pure Breed Mares Inseminated by the Deep Intracornual Method in Post-ovulation

Najjar¹,

Khaldi²,

Samia³

et al. 2018

Adv. Anim. Vet. Sci.

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| This work was aimed to study the influence of different factors on the pregnancy rate in the Pure Arab Breed (PAB) mares, inseminated intra-cornually in post-ovulation. A total of 62 thoroughbred PAB mares were inseminated by this method during the breeding season of 2016. Almost half of these mares (28) received an hCGtreatment (Chorulon ® ) to induce ovulation. Heat in all the mares was detected by rail teasing, and their follicular activity monitored 3 times a day by ultrasound (9am, 4pm and 11pm) until observation of the corpus luteum. At this moment, intracornual artificial insemination with frozen semen (AIF) is executed and the pregnancy rate is determined after the pregnancy confirmation examination, at 35 days post AI. Results showed that the pregnancy rate does not vary between the group of mares treated with Chorulon ® (37%) and that of untreated mares (34%). However, this parameter varies significantly according to the moment op AI (21.5% if the AI occurs at 4pm versus 36% and 36.5% respectively if the AI is practiced immediately after the 9am and 11pm ultrasound examinations, respectively, p<0.05). Moreover, the rate of pregnant mares is higher when the ovulation occurs in the right ovary (p<0.05). A significantly higher number of pregnancies is obtained when the diameter of the preovulatory follicle measures between 35 to 44 mm (p<0.05). The identified variation factors influencing the pregnancy rate in PAB mares are the moment of insemination, the ovary where the ovulation occurs, and the diameter of the preovulatory follicle.

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Ovarian Ultrasonography in the Mare

Cited by 5 publications

References 15 publications

Advances in the ultrasound diagnosis in equine reproductive medicine: New approaches

Advances in the ultrasound diagnosis in equine reproductive medicine: New approaches

Prediction of the ovulation time in estrus mares by different methods

Variation Factors of the Pregnancy Rate of Arab Pure Breed Mares Inseminated by the Deep Intracornual Method in Post-ovulation

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