Application of timed artificial insemination protocols to grazing Japanese Black cattle with long open period

Journal of Veterinary Medical Science

Volumn 65, Issue 4, 2003, Pages 459-464

  Osawa, Takeshi ^a   Morishige, Daisaku ^a   Ohta, Daisaku ^a   Kimura, Yusuke ^a   Miyake, Yoh Ichi ^a  

^a IWATE UNIVERSITY   (Japan)

Author keywords

Beef cattle; Hormonal profile; Synchronization of ovulation; Timed AI

Indexed keywords

ANIMALIA; BOS TAURUS;

ESTRADIOL; FERTILITY PROMOTING AGENT; GONADORELIN; PROGESTERONE; PROSTAGLANDIN F2 ALPHA;

ANIMAL; ANIMAL DISEASE; ARTICLE; ARTIFICIAL INSEMINATION; BLOOD; CATTLE; CORPUS LUTEUM; ESTRUS CYCLE; FEMALE; FERTILIZATION; METHODOLOGY; OVARY; PHYSIOLOGY; PREGNANCY; PREGNANCY RATE; TIME;

ANIMALS; CATTLE; CORPUS LUTEUM; DINOPROST; ESTRADIOL; ESTRUS SYNCHRONIZATION; FEMALE; FERTILITY AGENTS, FEMALE; FERTILIZATION; GONADOTROPIN-RELEASING HORMONE; INSEMINATION, ARTIFICIAL; OVARY; PREGNANCY; PREGNANCY RATE; PROGESTERONE; TIME FACTORS;

EID: 0141566478     PISSN: 09167250     EISSN: 13477439     Source Type: Journal    
DOI: 10.1292/jvms.65.459     Document Type: Article

References (17)

1. Britt, J. S. and Gaska, J. 1998. Comparison of two estrus synchronization programs in a large, confinement-housed dairy herd. J. Am. Vet. Med. Assoc. 212: 210-212.
2. Domeki, I. 1995. Farm animals, pp. 82-100. In: Textbook of Theriogenology (Mori J., Kanagawa, H. and Hamana, K. eds.), Buneido Publishing Co., Ltd., Tokyo (in Japanese).
3. Geary, T. W., Whittier, J. C., Downing, E. R., LeFever, D. G., Silcox, R. W., Holland, M. D., Nett, T. M. and Niswender, G. D. 1998. Pregnancy rates of postpartum beef cows that were synchronized using Syncro-Mate-B or the ovsynch protocol. J. Anim. Sci. 76: 1523-1527.
4. Hawk, H. W. 1987. Transport and fate of spermatozoa after insemination of cattle. J. Dairy Sci. 70: 1487-1503.
5. 2α) for synchronization of estrus and ovulation. Theriogenology 50: 1131-1139.
6. Nagata, S., Kondou, M., Kaneko, H., Araki, K., Nambo, Y., Oikawa, M., Watanabe, G. and Taya, K. 1996. A simple defatting method using a partition method of acetonitrile and n-hexane for radioimmunoassay of low blood levels of estradiol-17β. J. Reprod. Dev. 42: j43-j49 (in Japanese).
7. Nebel, R. L. and Jobst, S. M. 1998. Evaluation of systematic breeding programs for lactating dairy cows: a review. J. Dairy Sci. 81: 1169-1174.
8. Osawa, T., Nakao, T., Nakada, K., Moriyoshi, M. and Kawata, K. 1996. Pituitary response to exogenous GnRH on day 7 postpartum in high-producing dairy cows. Reprod. Dom. Anim. 31: 343-347.
9. Peters, A.R., Mawhinney, I., Drew, S. B., Ward, S. J., Warren, M. J. and Gordon, P. J. 1999. Development of a gonadotrophin-releasing hormone and prostaglandin regimen for the planned breeding of dairy cows. Vet. Rec. 145: 516-521.
10. 2α and GnRH. Theriogenology 44: 915-923.
11. Pursley, J. R., Wiltbank, M. C., Stevenson, J. S., Ottobre, J. S., Garverick, H. A. and Anderson, L. L. 1997. Pregnancy rates per artificial insemination for cows and heifers inseminated at a synchronized ovulation or synchronized estrus. J. Dairy Sci. 80: 295-300.
12. Pursley, J. R., Silcox, R. W. and Wiltbank, M. C. 1998. Effect of time of artificial insemination on pregnancy rates, calving rates, pregnancy loss, and gender ratio after synchronization of ovulation in lactating dairy cows. J. Dairy Sci. 81: 2139-2144.
13. Roy, G. L. and Twagiramungu, H. 1996. A fixed time AI program using the GnRH-PGF-GnRH method for beef females. J. Anim. Sci. 74 (Suppl. 1): 462.
14. 2α. J. Dairy Sci. 82: 506-515.
15. 125I- iodohistamine radioligands. Jpn. J. Anim. Reprod. 31: 186-197 (in Japanese).
16. Walker, W. L., Nebel, R. L. and McGilliard, M. L. 1996. Time of ovulation relative to mounting activity in dairy cattle. J. Dairy Sci. 79: 1555-1561.
17. Yamada, K., Nakao, T. and Mihara, N. 1999. Synchronization of ovulation and fixed-time insemination for improvement of conception rate in dairy herds with poor estrus detection efficiency. J. Reprod. Dev. 45: 51-55.