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Improving the formation and function of the corpus luteum in the mare


Sieme, Harald; Lüttgenau, Johannes; Sielhorst, Jutta; Martinsson, Gunilla; Bollwein, Heinrich; Thomas, Selina; Burger, Dominik (2015). Improving the formation and function of the corpus luteum in the mare. Revista Brasileira de Reprodução Animal, 39(1):117-120.

Abstract

The corpus luteum (CL) is a pivotal structure in the regulation of the estrous cycle and in the establishment of pregnancy. It is one of the most vascularised organs in the body, undergoing rapid cellular and vascular changes in order to fulfill its role. B-Mode and Doppler ultrasound has enabled further research into the equine CL and can be utilised as a clinical tool in the assessment of luteal form and function. An understanding of the normal ultrasonographic variations of luteal development and regression is essential to enable clinicians to make an assessment of luteal age as well as make clinical decisions in the gynaecological management of mares under their care. Although advances in the management of brood mares have led to an increase in conception rates, early embryonic death (EED) is still a major economic concern in equine practice. Because EED is in almost all cases recognized retrospectively, it is not surprising that CL resp. progesterone insufficiency is assumed to cause EED. However, there is little scientific evidence to support this hypothesis. Despite preventive managerial measures there are few pharmacological means to improve function of the CL (e.g. Regumate®, GnRH, hCG) in the mare.

The corpus luteum (CL) is a pivotal structure in the regulation of the estrous cycle and in the establishment of pregnancy. It is one of the most vascularised organs in the body, undergoing rapid cellular and vascular changes in order to fulfill its role. B-Mode and Doppler ultrasound has enabled further research into the equine CL and can be utilised as a clinical tool in the assessment of luteal form and function. An understanding of the normal ultrasonographic variations of luteal development and regression is essential to enable clinicians to make an assessment of luteal age as well as make clinical decisions in the gynaecological management of mares under their care. Although advances in the management of brood mares have led to an increase in conception rates, early embryonic death (EED) is still a major economic concern in equine practice. Because EED is in almost all cases recognized retrospectively, it is not surprising that CL resp. progesterone insufficiency is assumed to cause EED. However, there is little scientific evidence to support this hypothesis. Despite preventive managerial measures there are few pharmacological means to improve function of the CL (e.g. Regumate®, GnRH, hCG) in the mare.

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Additional indexing

Item Type:Journal Article, not refereed, original work
Communities & Collections:05 Vetsuisse Faculty > Veterinary Clinic > Department of Farm Animals
Dewey Decimal Classification:570 Life sciences; biology
630 Agriculture
Language:English
Date:1 March 2015
Deposited On:18 Dec 2015 13:29
Last Modified:05 Apr 2016 19:40
Publisher:Belo Horizonte
Official URL:http://www.cbra.org.br/pages/publicacoes/rbra/v39n1/pag117-120%20(RB568).pdf
Related URLs:http://www.cbra.org.br/portal/publicacoes/rbra/2015/rbrajm2015.html (Publisher)
Permanent URL: https://doi.org/10.5167/uzh-116508

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