J. Anim Sci.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Rozeboom, K. J.
Right arrow Articles by Wilson, M. E.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Rozeboom, K. J.
Right arrow Articles by Wilson, M. E.
J. Anim. Sci. 2004. 82:2164-2168
© 2004 American Society of Animal Science

ANIMAL PRODUCTION

The reproductive performance and factors affecting on-farm application of low-dose intrauterine deposit of semen in sows

K. J. Rozeboom*,1, D. L. Reicks{dagger} and M. E. Wilson*

* Minitube of America, Inc., Verona, WI 53593 and and {dagger} Swine Vet Center, St. Peter, MN 56082

1 Correspondence: 419 Venture Ct. (phone: 800-646-4882; e-mail: krozeboom{at}minitube.com).

The objective of this experiment was to determine the reproductive performance and factors that affect on-farm application of low-dose intrauterine insemination (IUI) in sows. Four hundred twenty-two sows were used in a simple arrangement of four treatments to determine the effect of spermatozoa per dose (0.5 x 109, 1 x 109, or 4 x 109 IUI, and 4 x 109 with a conventional catheter) on the main effects of conception, litter size, and farrowing rate. Following weaning at approximately 18 d after parturition, estrus detection was performed daily in the presence of a mature boar. At the time of estrus detection, sows were blocked for parity (1, 2, or 3+), weaning-to-estrus interval (WEI; 3, 4, or 5 d), and assigned randomly to be serviced twice with semen from the same boar(s). Treatment services were equally divided among three technicians. Delivery of acceptable numbers of spermatozoa per dose with either device (IUI or conventional) produced similar reproductive performances; however, farrowing rate, total pigs born, and total born alive decreased (P < 0.05) when suboptimal numbers (≤ 1 x 109) of spermatozoa were used with IUI. Treatment interactions with parity were not detected and were removed from the final model. Treatment interactions with WEI on farrowing rate were detected (P < 0.05), and sows with WEI of 3 d had a markedly lower (P < 0.05) farrowing rate than all other treatment groups. The results from this experiment suggest that placement of semen at the beginning of the uterine horn with conventional volumes and spermatozoa numbers produces results similar to placement of semen in the cervical cavity with a conventional AI catheter. Although there is little published evidence of reproductive performances in a commercial setting with suboptimal numbers of spermatozoa, these results suggest that insemination beyond the cervix does not offset effects of suboptimal numbers of spermatozoa.

Key Words: Artificial Insemination • Intrauterine • Sow • Spermatozoa






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2004 by the American Society of Animal Science.