Effect of single or double insemination on fertility of sows bred at an induced estrus and ovulation

Journal of Swine Health and Production

Volumn 13, Issue 5, 2005, Pages 254-258

  Cassar, Glen ^a   Kirkwood, Roy N ^b   Poljak, Zvonimir ^a   Bennett Steward, Kristina ^c   Friendship, Robert M ^a  

^a UNIVERSITY OF GUELPH   (Canada)

^b MICHIGAN STATE UNIVERSITY   (United States)

^c Bioniche Animal Health   (Canada)

Author keywords

Equine chorionic gonadotropin; Fertility; Ovulation; Porcine luteinizing hormone; Swine

Indexed keywords

EQUIDAE; SUIDAE; SUS SCROFA;

EID: 25444504846     PISSN: 1537209X     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Review

References (16)

1. Kemp B, Soede NM. Relationship of weaning-to-estrus interval to timing of ovulation and fertilization in sows. J Anim Sci. 1996;74:944-949.
2. Nissen AK, Soede NM, Hyttel P, Schmidt M, D'Hoore L. The influence of time of insemination relative to time of ovulation on farrowing frequency and litter size in sows as investigated by ultrasonography. Theriogenology. 1997;47:1571-1582.
3. Knox RV, Rodriguez-Zas S. Factors influencing estrus and ovulation in weaned sows as determined by transrectal ultrasound. J Anim Sci. 2001;79:2957-2963.
4. Weitze KF, Wagner-Rietschel H, Richter L. Standing heat and ovulation in a sow herd. Proc IPVS; The Hague, the Netherlands; 1992:460.
5. Candini PH, Zanela E, Silveira PRS, Moretti AS, Viana CHC, Valentim R. Utilization of porcine LH on synchronization of ovulation in weaned sows. Proc Brazilian Cong Swine Vet Pract; 1999.
6. De Rensis F, Benedetti S, Silva P, Kirkwood RN. Fertility of sows following artificial insemination at a gonadotropin-induced estrus coincident with weaning. Anim Reprod Sci. 2003;76:245-250.
7. Soede NM, Kemp B. Expression of oestrus and timing of ovulation in pigs. J Reprod Fertil. 1999;52(suppl):91-103.
8. Kirkwood RN, Aherne FX, Foxcroft GR. Effect of PG600 at weaning on reproductive performance of primiparous sows. Swine Health Prod. 1998;6:51-55.
9. Sechin A, Deschamps JC, Lucia T, Alexio JAG, Bordignon V. Effect of equine chorionic gonadotropin on weaning-to-first service interval and litter size of female swine. Theriogenology. 1999;51:1175-1182.
10. Lucia T Jr, Correa MN, Deschamps JC, Peruzzo IA, Matheus JEM, Alexio JAG. Influence of equine chorionic gonadotropin on weaning-to-estrus interval and estrus duration in early-weaned, primiparous, female swine. J Anim Sci. 1999;77:3163-3167.
11. Knox RV, Rodriguez-Zas SL, Miller GM, Willenburg KL, Robb JA. Administration of P.G.600 to sows at weaning and the time of ovulation as determined by transrectal ultrasound. J Anim Sci. 2001;79:796-802.
12. Wiesak T, Hunter MG, Foxcroft GR. Differences in follicular morphology, steroidogenesis and oocyte maturation in naturally cyclic and PMSG/hCG-treated prepuberal gilts. J Reprod Fertil. 1990;89:641-663.
13. th Int Conf Pig Reprod; 2001.
14. Brussow KP, Jochle W, Huhn U. Control of ovulation with a GnRH analog in gilts and sows. Theriogenology. 1996;46:925-934.
15. Knox RV, Althouse GC. Visualizing the reproductive tract of the female pig using real-time ultrasonography. Swine Health Prod. 1999;7:207-215.
16. Cassar G, Kirkwood RN, Poliak Z, Friendship R. Effect of estrogen formulation and site of deposition on artificially inseminated sows treated with human chorionic gonadotropin to induce ovulation. J Swine Health Prod. 2004;12:285-287.