The Effect of Post-Ovulatory Artificial Insemination on Sow Reproductive Performance |
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| Authors: | CD Castagna CH Peixoto FP Bortolozzo I Wentz F Ruschel GB Neto |
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| Institution: | Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul Porto Alegre-RS, Brazil |
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| Abstract: | In order to increase reproductive performance, sows are usually inseminated several times during oestrus. In practice, this results in a significant number of sows receiving one or more post‐ovulatory inseminations. This study was carried out to determine the percentage of sows that receive one or more post‐ovulatory inseminations and the effect of such treatment on reproductive performance. The results were analysed from a total of 1298 sows on two farms. It was observed that more than 70% of the sows received at least one post‐ovulatory insemination and approximately 20% received two or more. There was no observed effect on the rate of return to oestrus, farrowing rate or litter size (p > 0.05). |
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