Commenced in January 2007
Paper Count: 31106
The Effect of Body Condition Score on Hormonal and Vaginal Histological Changes During Estrus of Synchronized Etawah Cross Bred Does
Abstract:Eight Etawah cross bred does were divided into two groups based on body condition score (BCS). Group I (BSC 2, body weight 25-30 kg; n = 4), and Group II (BSC 3, body weight, 35-40 kg, n=4). All does received intravaginal controlled internal drug release devices (CIDR) for 10 days, and a prostaglandin F2α at 48 h before CIDR removal. Estrus detection was carried out using vasectomized buck. Vaginal epithelium was taken to determine estrus cycle. Blood samples were taken every 3-6 hours, started from moment of CIDR removal until the end of estrus. The results showed vaginal histological indicated estrus occurred at the hours of 25 to 60 and 30 to 70 post CIDR removal in BCS 2 and 3, respectively. Progesterone peak of BCS 2 and BCS 3 were 0.18±0.31 and 0.48±0.31 ng/mL on the hour 0 post CIDR removal. Estradiol -17ß peak of each group was 53.25±35.08 and 89.91±92.84 pg/mL at 48 post CIDR removal. LH surge only occurred on BCS 3 groups, the LH concentrations were 9.9± 9.1; 4.5± 4.0; and 18.2± 9.1 ng/mL at 45, 48 and 51 hours post CIDR removal, respectively. It was concluded that the BCS had effects on vaginal histological changes and LH surge.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1079950Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1492
 M. O. Ezekwe and J. Lovin, "Aseasonal reproductive performance of Virginia Brush goats used for meat production," Anim Sci. J., vol 74, pp. 245 (Suppl 241), 1996.
 D.T. Widayati, N.W.K. Karja, P. Asuti, "Production of Ettawah cross bred embryo in vivo : Effect of cryopreservation and sexing goat embryos for their practical use," Report of Post Graduated Research Grand, 2008.
 J. P. C. Greyling, "Reproduction traits in the Boer goat doe," J. Small Rum. Res., vol 36, pp.171-177, 2000.
 L. I. Spahr, "Body Condition Scoring in Meat Goats," Penn State College of Agricultural Sci., vol 23, pp. 11-15, 2005.
 M.C. Maurel, B. Leboeuf, and D. Bernalas, "Determination of the LH peak in dairy goats using an ELISA kit in farm". In: Program of the 8th scientic meeting of the European Embryo Transfer Asscociation; Lyon, Abstract 486, 1991.
 J.E. Romano, "The effect of continuous presence of bucks on hastening the onset of estrous in synchronized does during the breeding season, " Small Rumin. Res. 30, 99-103, 1988.
 J.E. Romano, "Comparison of fluorogestone and medroxyprogesterone intravaginal pessaries for estrous synchronization in dairy goats," Small Rumin. Res. 22, 219-223, 1988.
 D.T. Widayati, Kustono, S. Bintara, and Ismaya, "Physiology of reproduction", Unpublished, 2008.
 C.R. Austin and R.V. Short, "Hormone Control of reproduction," Cambridge University Press, 1982.
 G. Baril, B. Leboeuf, and J. Saumande, "Syncronization of estrus goats: the relationship between time of occurance of estrus and fertility following artificial insemination," Theriogenology 40: 621-628, 1993.
 K. Suharto, Effect of time artificial insemination in relation to the time of ovulation on pregnancy rates and sex ratio of Etawah crossbred goats, Disertation, Universitas Gadjah Mada, 2008.
 J.T. Pierson, H. Baldassarre, C.L. Keefer , and B.R. Downey, "Seasonal variation in preovulatory events associated with synchronization of estrus in dwarf goats," Theriogenology 56:759-69, 2001.
 A.W.N. Cameron, K.M. Battye, and A.O. Trounson, "Time of ovulation in goats (Capra hircus) induced to superovulate with PMSG,"J. Reprod Fertil 83:747-52, 1988.
 V.J.F. Freitas, G. Baril, G.B. Martin, and J. Saumande, "Physiological limits to further improvement in the efficiency of oestrous synchronization in goats," Reprod Fertil Dev. 9:551-556, 1997.
 A.U. Mani, W.A.C, McKelvey, and E.D, Waston, Effect of undernutrition on gonadotrophin profiles in pregnant, cycling goats. J. Anim Repro Sci 43: 25-33, 1996
 D.P., Nation, C.R. Burke, G. Parton, R. Stevenson, and K.L Macmillan, "Hormonal an ovarian responses to a 5-day progesterone treatment in anestrous dairy cows in the third week post-partum," Anim. Reprod. Sci. 63,13-25, 2000.
 D.T. Widayati, A.Junaidi, K. Suharto, A. Oktaviani, Wahyuningsih, "Reproduction Performance of Etawah Cross Bred Goats in Estrus Synchronization by Controlled Internal Drug Release Implant and PGF2 Continued by Artificial Inseminataion," In press.