Artículo
The effect of mare's age on multiple ovulation rate, embryo recovery, post-transfer pregnancy rate, and interovulatory interval in a commercial embryo transfer program in Argentina
Marinone, Ana Ines
; Losinno, Luis; Fumuso, Elida Ana; Rodríguez, E. M.; Redolatti, Cecilia; Cantatore, Sofia Ernestina
; Cuervo Arango Lecina, Juan
Fecha de publicación:
07/2015
Editorial:
Elsevier Science
Revista:
Animal Reproduction Science
ISSN:
0378-4320
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Advanced maternal age is an important predisposing factor on the reduction of reproductive efficiency. The aim of this study was to evaluate the effect of donor's age on several reproductive parameters in a commercial equine embryo transfer program. Donors were classified into 3 age groups: Group 1. = fillies (3 and 4 years old), Group 2. = middle age mares (aged 5-10) and Group 3. = old mares (aged 13-25). Embryo recovery, multiple ovulation and pregnancy rates and interovulatory intervals were compared amongst age groups. Group 1 (171/244, 70.1%) and Group 2 (774/1081, 71.6%) had a higher (P<. 0.005) embryo recovery rate than Group 3 (385/701, 54.9%). Groups 2 and 3 were 2.5 and 3.4 times more likely to have multiple ovulations than Group 1 (P<. 0.05), respectively. The effect of age group on pregnancy rate was not significant (P>. 0.05). The interovulatory intervals length was influenced by individual mare (P<. 0.001), age (P<. 0.04), Day of flushing (P= 0.009) and by month (P<. 0.012). The overall mean interovulatory interval of Group 1 (16.4 ± 0.17 days) and Group 2 (16.6 ± 0.12 days) was not different (P>. 0.05), but was shorter than the one of Group 3 (17.4 ± 0.15 days; P<. 0.04). The embryo recovery rate of flushings from Groups 1 and 2 was influenced by the length of the previous interovulatory interval (P= 0.03).
Palabras clave:
AGE
,
EMBRYO RECOVERY
,
INTEROVULATORY INTERVAL
,
MARE
,
OVULATION RATE
,
PREGNANCY RATE
Archivos asociados
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Identificadores
Colecciones
Articulos(CIVETAN)
Articulos de CENTRO DE INVESTIGACION VETERINARIA DE TANDIL
Articulos de CENTRO DE INVESTIGACION VETERINARIA DE TANDIL
Citación
Marinone, Ana Ines; Losinno, Luis; Fumuso, Elida Ana; Rodríguez, E. M.; Redolatti, Cecilia; et al.; The effect of mare's age on multiple ovulation rate, embryo recovery, post-transfer pregnancy rate, and interovulatory interval in a commercial embryo transfer program in Argentina; Elsevier Science; Animal Reproduction Science; 158; 7-2015; 53-59
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