Reproduction results and offspring performance after non-surgical embryo transfer in pigs

Theriogenology
D W B Ducro-SteverinkJ W M Merks

Abstract

Increased interest in transfer of valuable genetic material around the world with minimal health risks has stimulated the development of non-surgical embryo transfer (nsET) technologies in pigs. Experimental evidence shows that nsET without sedation of the recipients is now feasible. The goal of this study, therefore, was to evaluate a method of nsET under commercial conditions. The experiment included 135 donor gilts and 45 multiparous recipient sows. Ovulation was induced in both donors and recipients, and nsET was performed using the Swinlet catheter. Donor gilts averaged 16.5 (7-45) corpora lutea, but this depended on age of the donor (P < 0.05). An average of 10.1 transferable blastocysts was recovered per donor, and the recovery rate was 84%. For 44 nsET, 14 recipients (31%) came into estrous before Day 23 after ovulation, 7 recipients (16%) came into estrous between Days 23 and 30, 3 recipients (6.8%) came into estrous between Days 39 and 48, 2 recipients (4.5%) had a late abortion. Finally, 18 of 44 recipients (41%) resulted in successful births, with an average liter size of 7.2 +/- 2.8. Birth weight of nsET piglets were 0.2 kg more than control piglets, but depended on litter size ((P < 0.05). The sex-ratio was not di...Continue Reading

References

Oct 1, 1989·Australian Veterinary Journal·R D CameronJ McVeigh
Jul 1, 2004·Theriogenology·D W B Ducro-SteverinkJ W M Merks

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Citations

Sep 4, 2012·Animal Reproduction Science·V FurstossF Martinat-Botté
Jul 13, 2005·Reproduction in Domestic Animals = Zuchthygiene·E A MartinezJ L Vazquez
Jul 15, 2015·Theriogenology·Emilio A MartinezMaria A Gil
Sep 12, 2006·Gynécologie, obstétrique & fertilité·F Martinat-BottéF Madec
Jul 1, 2004·Theriogenology·D W B Ducro-SteverinkJ W M Merks

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