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Factors of importance when selecting sows as embryo donors

Published online by Cambridge University Press:  21 February 2017

A. Nohalez ,
C. A. Martinez ,
J. Reixach ,
M. Diaz ,
J. Vila ,
I. Colina ,
I. Parrilla ,
J. L. Vazquez ,
J. Roca  and
M. A. Gil
...Show all authors
A. Nohalez
Affiliation:
Department of Animal Medicine and Surgery, University of Murcia, 30100 Murcia, Spain
C. A. Martinez
Affiliation:
Department of Animal Medicine and Surgery, University of Murcia, 30100 Murcia, Spain
J. Reixach
Affiliation:
Department of Research and Development, Selección Batallé S.A., 17421 Riudarenes, Girona, Spain
M. Diaz
Affiliation:
Department of Research and Development, Selección Batallé S.A., 17421 Riudarenes, Girona, Spain
J. Vila
Affiliation:
Department of Research and Development, Selección Batallé S.A., 17421 Riudarenes, Girona, Spain
I. Colina
Affiliation:
Department of Research and Development, Selección Batallé S.A., 17421 Riudarenes, Girona, Spain
I. Parrilla
Affiliation:
Department of Animal Medicine and Surgery, University of Murcia, 30100 Murcia, Spain
J. L. Vazquez
Affiliation:
Department of Animal Medicine and Surgery, University of Murcia, 30100 Murcia, Spain
J. Roca
Affiliation:
Department of Animal Medicine and Surgery, University of Murcia, 30100 Murcia, Spain
M. A. Gil
Affiliation:
Department of Animal Medicine and Surgery, University of Murcia, 30100 Murcia, Spain
H. Rodriguez-Martinez
Affiliation:
Department of Clinical & Experimental Medicine (IKE), Linköping University, Lasarettsgatan 64/65, Lanken, SE-581 85, Linköping, Sweden
E. A. Martinez*
Affiliation:
Department of Animal Medicine and Surgery, University of Murcia, 30100 Murcia, Spain
C. Cuello
Affiliation:
Department of Animal Medicine and Surgery, University of Murcia, 30100 Murcia, Spain
*
†E-mail: emilio@um.es
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Abstract

The improvement in porcine embryo preservation and non-surgical embryo transfer (ET) procedures achieved in recent years represents essential progress for the practical use of ET in the pig industry. This study aimed to evaluate the effects of parity, weaning-to-estrus interval (WEI) and season on reproductive and embryonic parameters at day 6 after insemination of donor sows superovulated after weaning. The selection of donor sows was based on their reproductive history, body condition and parity. The effects of parity at weaning (2 to 3, 4 to 5 or 6 to 7 litters), season (fall, winter and spring), and WEI (estrus within 3 to 4 days), and their interactions on the number of corpus luteum, cysts in sows with cysts, number and quality of viable and transferable embryos, embryo developmental stage and recovery and fertilization rates were evaluated using linear mixed effects models. The analyses showed a lack of significant effects of parity, season, WEI or their interactions on any of the reproductive and embryonic parameters examined. In conclusion, these results demonstrate that fertilization rates and numbers of viable and transferable embryos collected at day 6 of the cycle from superovulated donor sows are not affected by their parity, regardless of the time of the year (from fall to spring) and WEI (3 or 4 days).

Keywords

pigembryo donorparityseasonweaning-to-estrus interval
Type
Research Article
Information
animal , Volume 11 , Issue 8 , August 2017 , pp. 1330 - 1335
Copyright
© The Animal Consortium 2017 

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