Relationship between embryo recovery rate and uterine lavage fluid composition in postpartum mares.
Reprod Nutr Dev
; 40(4): 383-91, 2000.
Article
em En
| MEDLINE
| ID: mdl-11081665
ABSTRACT
The aim of the study was to determine whether neutrophil numbers (PMN), trypsin-inhibitor capacity (TIC), lysozyme, N-acetyl-beta-D-glucosaminidase (NAGase), beta-glucuronidase (B-Gase), total protein, and plasmin in uterine lavage fluid of postpartum (p.p.) mares, either at the time of foal heat insemination or around the time of arrival of the embryo in the uterus, could be used in predicting conception. Fifteen mares were inseminated within 13 h after the first p.p. ovulation. Uterine lavage fluids were successfully collected from 9 out of 12 mares before insemination and from all 15 mares before embryo recovery 7 to 8 days after insemination. The embryo recovery rate was 53% (8/15). Prior to insemination, PMN, TIC and lysozyme levels were elevated in 3/4 mares not producing embryos. However, only 1/5, 1/5 and 0/5 mares producing embryos had elevated levels of PMN, TIC, and lysozyme, respectively. None of the parameters was significantly different in mares with or without embryos, but lysozyme was the closest to significance (p = 0.07). In both groups of mares, activities of NAGase (p < 0.01) and B-Gase (p < 0.05) were significantly higher in dioestrus than immediately after ovulation. At embryo recovery, NAGase was higher in mares not producing embryos (p < 0.05). The results suggest that a long-lasting inflammation is the best explanation for low pregnancy rates during the first p.p. oestrus. Further research is needed to establish whether lysozyme, or possibly TIC, could be used in predicting conception at foal heat.
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Base de dados:
MEDLINE
Assunto principal:
Útero
/
Inseminação Artificial
/
Cavalos
/
Inflamação
Tipo de estudo:
Prognostic_studies
Limite:
Animals
Idioma:
En
Ano de publicação:
2000
Tipo de documento:
Article