Effect of housing system and boar exposure on estrus expression in weaned sows

Journal of Animal Science

Volumn 82, Issue 10, 2004, Pages 3088-3093

  Knox, R V ^a,b   Breen, S M ^a   Willenburg, K L ^a   Roth, S ^a   Miller, G M ^a   Ruggiero, K M ^a   Rodriguez Zas, S L ^a  

^a UNIVERSITY OF ILLINOIS AT URBANA CHAMPAIGN   (United States)

^b 360 Animal Sciences Laboratory   (United States)

Author keywords

Boar Exposure; Crates; Estrus; Housing; Pens; Sows

Indexed keywords

EID: 4644271349     PISSN: 00218812     EISSN: None     Source Type: Journal    
DOI: 10.2527/2004.82103088x     Document Type: Article

References (24)

1. Dewey, C. E., S. E. Martin, R. M. Friendship, and M. R. Wilson. 1994. The effect on litter size of previous lactation length and previous weaning to conception interval in Ontario Swine. Prev. Vet. Med. 18:213-223.
2. Dial, G. D., W. E. Marsh, D. D. Poison, and J. P. Vaillancourt. 1992. Reproductive failure: Differential diagnosis. Pages 88-137 in Diseases of Swine. A. L. Leman, B. E. Straw, W. L. Mengeling, S. D'Allaire, and D. J. Taylor, ed. Iowa State Univ. Press, Ames.
3. Dyck, G. W. 1988. The effect of housing facilities and boar exposure after weaning on the incidence of postlactational anestrus in primiparous sows. Can. J. Anim. Sci. 68:983-985.
4. Hemsworth, P. H., and J. L. Barnett. 1990. Behavioural responses affecting gilt and sow reproduction. J. Reprod. Fertil. Suppl. 40:343-354.
5. Hemsworth, P. H., and C. Hansen. 1990. The effects of continuous boar contact on the oestrus detection rate of weaned sows. Appl. Anim. Behav. Sci. 28:281-285.
6. Hughes, P. E. 1982. Factors affecting the natural attainment of puberty in the gilt. Pages 117-138 in Control of Pig Reproduction. D. J. A. Cole and G. R. Foxcroft, ed. Butterworth Scientific, London, U.K.
7. Hughes, P. E., G. P. Pearce, and A. M. Paterson. 1990. Mechanisms mediating the stimulatory effects of the boar on gilt reproduction. J. Reprod. Fertil. Suppl. 40:323-341.
8. Hughes, P. E., G. Philip, and R. Siswadi. 1997. The effects of contact frequency and transport on the efficacy of the boar effect. Anim. Reprod. Sci. 46:159-165.
9. Kingsbury, D. L., and N. C. Rawlings. 1993. Effect of exposure to a boar on circulating concentrations of LH, FSH, cortisol and oestradiol in prepubertal gilts. J. Reprod. Fertil. 98:245-250.
10. Knox, R. V., G. Miller, K. Willenburg, and S. L. Rodriguez-Zas. 2002. Effect of frequency of boar exposure and adjusted mating times on measures of reproductive performance in weaned sows. J. Anim. Sci. 80:892-899.
11. Langendijk, P., N. M. Soede, and B. Kemp. 2000. Effects of boar contact and housing conditions on estrus expression in weaned sows. J. Anim. Sci. 78:871-878.
12. Levis, D. G., and P. H. Hemsworth. 1995. How long does standing estrus last after initial boar exposure when heat checking? Pages 3-4 in Univ. of Nebraska Swine Rep. EC 94-219-A.
13. Melrose, D. R., H. C. B. Reed, and R. L. S. Patterson. 1971. Androgen steroids associated with boar odour as an aid to the detection of oestrus in pig artificial insemination. Br. Vet. J. 127:497-501.
14. Paterson, A. M., P. E. Hughes, and G. P. Pearce. 1989. The effect of season, frequency and duration of contact with boars on the attainment of puberty in gilts. Anim. Reprod. Sci. 21:115-124.
15. Pearce, G. P., and P. E. Hughes. 1987. The influence of male contact on plasma cortisol concentrations in the prepubertal gilt. J. Reprod. Fertil. 80:417-424.
16. Pearce, G. P., and A. M. Paterson. 1992. Physical contact with the boar is required for maximum stimulation of puberty in the gilt because it allows transfer of boar pheromones and not because it induces cortisol release. Anim. Reprod. Sci. 27:209-224.
17. Pearce, G. P., and A. N. Pearce. 1992. Contact with a sow in oestrus or a mature boar stimulates the onset of oestrus in wearied sows. Vet. Rec. 130:5-9.
18. Perry, G. C., R. L. S. Patterson, H. J. H. MacFie, and C. G. Stinson. 1980. Pig courtship behaviour: Pheromonal property of androstene steroids in male submaxillary secretion. Anim. Prod. 31:191-199.
19. Prunier, A., Martinat-Botte, J. P. Ravault, and S. Camous. 1987. Perioestrous patterns of circulating LH, FSH, prolactin and oestradiol-17β in the gilt. Anim. Reprod. Sci. 14:205-218.
20. Soede, N. M., C. C. H. Wetzels, W. Zondag, M. A. I. de Koning, and B. Kemp. 1995. Effects of time of insemination relative to ovulation, as determined by ultrasonography, on fertilization rate and accessory sperm count in sows. J. Reprod. Fertil. 104:99-106.
21. Soede, N. M., and B. Kemp. 1997. Expression of oestrus and timing of ovulation in pigs. Control of Pig Reproduction. J. Reprod. Fertil. Suppl. 52:91-103.
22. Tantasuparuk, W., N. Lundeheim, A. M. Dalin, A. Kunavongkrit, and S. Einarsson. 2000. Effects of lactation length and weaning-to-service interval on subsequent farrowing rate and litter size in Landrace and Yorkshire sows in Thailand. Theriogenolgy 54:1525-1536.
23. van de Wiel, D. F. M., and P. Booman. 1993. Post-weaning anoestrus in primiparous sows: LH patterns and effects of gonadotropin injection and boar exposure. Vet. Q. 15:162-166.
24. Walton, J. S. 1986. Effect of boar presence before and after weaning on estrus and ovulation in sows. J. Anim. Sci. 62:9-15.