Intrauterine Artificial Seeding in Sow (I.A.I.U.), a more Efficient Biotechnical Method

Abstract. To streamline production in pigs farms, the breeding management has a key role. The aim is to achieve high and constant fertility and prolificity. Our researches were directed to use a new insemination method, called intrauterine (I.U.). The results were compared with those obtained by using classical method. There were made two lots of sows, under the same conditions of operation and maintenance. The witness lot (L.M.) consists of 175 sows, was classical inseminated with doses containing 4x109 spermatozoons. The experimental lot (L.E.) of 158 sows was intrauterine inseminated with 3x109 spermatozoons. After analyzing the data, it has been observed that L.E. fertility is 7.9 % higher than L.M. (81.7%), which shows better efficacy, given by the reduced number of seminal cells per insemination dose. The L.M. prolificity was 11.27, and for L.E. was 11.46 piglets at a calving. The results shows that the number of spermatozoon’s from intrauterine inseminated semen has been enough to increase prolificity with a 0.19 piglets at parturition. Regarding wean piglets after calving media, the number of these piglets at L.E. was 0.12 higher than L.M. (10.17). We noted that just sows fecundated is influenced by the season, for both types of insemination.