Early embryonic death in mares: clinical and hormonal aspects
The present study aimed to diagnose early embryonic death in 128 mares. Blood samples were collected at the 4th, 7th, 10th, 13th, 16th, 19th, 21st and 30th day after ovulation and the diameter of the corpus luteum was measured. The diameter and characteristics of the embryonic vesicle were evaluated by ultrasonography. Microbiology, cytology and histopathology were carried out in mares with embryonic death. Plasma oestrogen and progesterone concentration were measured by radioimmunoassay. From 128 mares, 17 (13.28%) showed early embryonic death. The embryonic losses took place at 19 days of pregnancy in 47.05% and at 21 days of pregnancy in 29.4% of the mares. The diameter of the corpus luteum in the mares that maintained pregnancy was similar to those with embryonic loss. Otherwise, the diameter of the embryonic vesicles was bigger at the 16th, 19th, 21st and 30th day of pregnancy when compared to the mares with embryonic loss. The mean plasma progesterone concentration was similar in both groups and the median plasma oestrogen concentration was higher in the pregnant mares. The cytological, microbiological and histopathological exams revealed that most of the mares had endometritis. Ultrasonography provided an early diagnosis of pregnancy (from the 12th day post-ovulation) and important information about the development of embryo and embryonic death. Endometritis was considered the main cause of embryonic losses in this study.
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Faculdade de Medicina Veterinária e Zootecnia / Universidade de São Paulo
1998
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oai:scielo:S1413-959619980004000052000-08-11Early embryonic death in mares: clinical and hormonal aspectsPAPA,Frederico OzanamLOPES,Maria DeniseALVARENGA,Marco AntonioMEIRA,Cezinande deLUVIZOTTO,Maria Cecília RuiLANGONI,HélioRIBEIRO,Erley FelixAZEDO,Antonio EstevesBOMFIM,Antonio Carlos de Miranda Embryo mortality Progesterone Estrogen Histopathology Equine The present study aimed to diagnose early embryonic death in 128 mares. Blood samples were collected at the 4th, 7th, 10th, 13th, 16th, 19th, 21st and 30th day after ovulation and the diameter of the corpus luteum was measured. The diameter and characteristics of the embryonic vesicle were evaluated by ultrasonography. Microbiology, cytology and histopathology were carried out in mares with embryonic death. Plasma oestrogen and progesterone concentration were measured by radioimmunoassay. From 128 mares, 17 (13.28%) showed early embryonic death. The embryonic losses took place at 19 days of pregnancy in 47.05% and at 21 days of pregnancy in 29.4% of the mares. The diameter of the corpus luteum in the mares that maintained pregnancy was similar to those with embryonic loss. Otherwise, the diameter of the embryonic vesicles was bigger at the 16th, 19th, 21st and 30th day of pregnancy when compared to the mares with embryonic loss. The mean plasma progesterone concentration was similar in both groups and the median plasma oestrogen concentration was higher in the pregnant mares. The cytological, microbiological and histopathological exams revealed that most of the mares had endometritis. Ultrasonography provided an early diagnosis of pregnancy (from the 12th day post-ovulation) and important information about the development of embryo and embryonic death. Endometritis was considered the main cause of embryonic losses in this study.info:eu-repo/semantics/openAccessFaculdade de Medicina Veterinária e Zootecnia / Universidade de São PauloBrazilian Journal of Veterinary Research and Animal Science v.35 n.4 19981998-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961998000400005en10.1590/S1413-95961998000400005 |
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PAPA,Frederico Ozanam LOPES,Maria Denise ALVARENGA,Marco Antonio MEIRA,Cezinande de LUVIZOTTO,Maria Cecília Rui LANGONI,Hélio RIBEIRO,Erley Felix AZEDO,Antonio Esteves BOMFIM,Antonio Carlos de Miranda |
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PAPA,Frederico Ozanam LOPES,Maria Denise ALVARENGA,Marco Antonio MEIRA,Cezinande de LUVIZOTTO,Maria Cecília Rui LANGONI,Hélio RIBEIRO,Erley Felix AZEDO,Antonio Esteves BOMFIM,Antonio Carlos de Miranda Early embryonic death in mares: clinical and hormonal aspects |
author_facet |
PAPA,Frederico Ozanam LOPES,Maria Denise ALVARENGA,Marco Antonio MEIRA,Cezinande de LUVIZOTTO,Maria Cecília Rui LANGONI,Hélio RIBEIRO,Erley Felix AZEDO,Antonio Esteves BOMFIM,Antonio Carlos de Miranda |
author_sort |
PAPA,Frederico Ozanam |
title |
Early embryonic death in mares: clinical and hormonal aspects |
title_short |
Early embryonic death in mares: clinical and hormonal aspects |
title_full |
Early embryonic death in mares: clinical and hormonal aspects |
title_fullStr |
Early embryonic death in mares: clinical and hormonal aspects |
title_full_unstemmed |
Early embryonic death in mares: clinical and hormonal aspects |
title_sort |
early embryonic death in mares: clinical and hormonal aspects |
description |
The present study aimed to diagnose early embryonic death in 128 mares. Blood samples were collected at the 4th, 7th, 10th, 13th, 16th, 19th, 21st and 30th day after ovulation and the diameter of the corpus luteum was measured. The diameter and characteristics of the embryonic vesicle were evaluated by ultrasonography. Microbiology, cytology and histopathology were carried out in mares with embryonic death. Plasma oestrogen and progesterone concentration were measured by radioimmunoassay. From 128 mares, 17 (13.28%) showed early embryonic death. The embryonic losses took place at 19 days of pregnancy in 47.05% and at 21 days of pregnancy in 29.4% of the mares. The diameter of the corpus luteum in the mares that maintained pregnancy was similar to those with embryonic loss. Otherwise, the diameter of the embryonic vesicles was bigger at the 16th, 19th, 21st and 30th day of pregnancy when compared to the mares with embryonic loss. The mean plasma progesterone concentration was similar in both groups and the median plasma oestrogen concentration was higher in the pregnant mares. The cytological, microbiological and histopathological exams revealed that most of the mares had endometritis. Ultrasonography provided an early diagnosis of pregnancy (from the 12th day post-ovulation) and important information about the development of embryo and embryonic death. Endometritis was considered the main cause of embryonic losses in this study. |
publisher |
Faculdade de Medicina Veterinária e Zootecnia / Universidade de São Paulo |
publishDate |
1998 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961998000400005 |
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