Oestrous Synchronization and Artificial Insemination in Dairy Cattle
R. Thangadurai*
Krishi Vigyan Kendra, Papparapatty, Dharmapuri, Tamil Nadu (636 809), India
K. Sivakumar
Krishi Vigyan Kendra, Papparapatty, Dharmapuri, Tamil Nadu (636 809), India
M.A. Vennila
Krishi Vigyan Kendra, Papparapatty, Dharmapuri, Tamil Nadu (636 809), India
DOI: NIL
Keywords: Fertility, GnRH, Oestrous synchronization, PGF2alfa
Abstract
TRIU-B, Gonadotropin Releasing Hormone (GnRH) on day 0, Prostaglandin F2alfa (PGF2alfa) on day 7, and GnRH on day 9 intramuscularly improve infertility in dairy cattle. Cattle were observed visually for oestrous after treatment. The cattle were artificially inseminated after detection of estrous signs. Pregnancy was determined by rectal examination 90 days after insemination. The results of the present study revealed that oestrous synchronization with artificial insemination improved fertility in pleuriparous cattle under field condition.
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Reference
Beever, D.E., 2006. The impacts of controlled nutrition during dry period on dairy cow health, fertility and performance. Anim Reprod Sci. 96, 212-222.
Jordan, E.R., Schouten, M.J., Quast, J.W., Belschner, A.P., Tomarszeaski, M.A., 2002. Comparison of two timed artificial insemination (TAI) protocol for management of first insemination post-partum. Journal of Dairy Science 85, 1002-1008.
Leitman, N.R., Busch, D.C., Mallory, D.A., Wilson, D.J., Ellersieck, M.R., Smith, M.F., Patterson, D.J., 2009. Comparison of long term CIDR based protocol to synchronize estrous in beef heifers. Anim. Reprod. Sci. 114, 345-355.
Paul, V., Prakash, B.S., 2005. Efficacy of Ovsynch protocol for synchronization of ovulation and fixed time artificial insemination in Murrah buffaloe (Bubalus nubalis). Theriogenology 64, 1049-1060.
Wiltbank, M.C., Gümen, A., Sartori, R., 2002. Physiological classification of anovulatory conditions in cattle. Theriogenology 57, 21-52.