Reproductive performance of sows submitted to intrauterine insemination

• Autor(a) principal: Araújo, Éder Batalha
• Data de Publicação: 2009
• Outros Autores: Costa, Eduardo Paulino da, Costa, Aurea Helena Assis da, Lopes, Flávio Guiselli, Macedo, Gustavo Guerino, Paula, Tarcízio Antônio Rêgo de
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://dx.doi.org/10.1590/S1516-35982009000800009; http://www.locus.ufv.br/handle/123456789/15067
• topic: Intra-cervical insemination; Intrauterine insemination; Semen backflow; Swine

The objective of this study was to evaluate the reproductive performance of sows artificially inseminated by the intrauterine (IAIU) technique. The experiment was arranged in a randomized complete block design, with 300 sows being distributed in five insemination techniques: control, intra-cervical (IAIC) with 3x109 spermatozoa/100 mL; intrauterine (IAIU) with 1x109 spermatozoa/100 mL; intrauterine with com 1x109 spermatozoa/50 mL; intrauterine with 5x108 spermatozoa/100 mL; and intrauterine com 5x108 spermatozoa/50 mL. The sows submitted to intrauterine insemination presented a farrowing rate of 90.8% and return to estrus rate of 9.2%, which did not differ from the rates obtained by the intra-cervical technique (90.0% and 10.0%, respectively). Total litter size did not differ between the techniques, with the means being from 11.4 to 11.9 piglets at farrowing. Although 4.6% of the sows submitted to intrauterine artificial insemination had difficulty with pipette insertion into the cervix, 100% of them were inseminated. When evaluating semen backflow, no difference was found between the intra-cervical and intrauterine insemination techniques. However, total semen backflow was higher in sows submitted to inter-cervical insemination. No difference was found in the presence of blood between the two methods evaluated. Hence, any of the intrauterine insemination techniques can substitute inter-cervical artificial insemination without damaging the reproductive performance of the animals.