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http://dx.doi.org/10.12749/RDB.2013.37.2.75

Effect of Pregnancy Rate Following Timing of Artificial Insemination after Estrus of Hanwoo Female  

Yang, Jung Seok (Department of Animal Science and Biotechnology, Sangji Youngseo College)
Heo, Young-Tae (Department of Animal Sciences, Chungbuk National University)
Uhm, Sang Jun (Department of Animal Science and Biotechnology, Sangji Youngseo College)
Ko, Dae Hwan (Department of Animal Science and Biotechnology, Sangji Youngseo College)
Publication Information
Reproductive and Developmental Biology / v.37, no.2, 2013 , pp. 75-77 More about this Journal
Abstract
This study was conducted to investigate optimal time of artificial insemination (AI) to Hanwoo female after natural estrus. AI was occurred 12 and 24 hours after natural estrus in both heifer and multiparous recipient then pregnancy and parturition rates were estimated. Results indicated that AI performed at 24 hours after natural estrus showed significant (p<0.05) higher pregnancy rate in both heifer and multiparous recipient groups with significantly (p<0.05) higher abortion rate. However, there are no significant differences of parturition rate, twin birth and sex ratio in both heifer and multiparous recipient groups. Therefore, our results may suggest that performance of AI at 24 hours after natural estrus promise higher pregnancy rate than AI at 12 hours after natural estrus in both heifer and multiparous recipient.
Keywords
Pregnancy; Estrus; Timing; AI; Cow;
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1 Ayalon N (1978): A review of embryonic mortality in cattle. J Reprod Fertil 54:483-493.   DOI   ScienceOn
2 Baek KS, Ko YG, Seong HH, Lee MS, Ryu IS, Jeong JK, Na SH (1998a): Survey on the effect of the parity on reproductive traits of Korean native cows. Korean J Animal Reprod 22:359-366.
3 Baek KS, Ko YG, Seong HH, Lee MS, Choi SH, Kim YK (1998b): Survey on the effect of the herd size on reproductive traits of Korean native cows. Korean J Animal Reprod 22:367-373.
4 Choi SH, Seong HH, Chang YM, Choi JH, Im GS, Yang BC, Yeon SH, Lee JH, Ryu IS, Son DS (2002): Effect of hCG administration on AI or cloned embryo transfer of Korean native heifers. Korean J emb Trans 17:227-234.
5 Han MH, Choi SH, Choi YH, Kim HJ, Cho SR, Choi CY, Ryu IS, Son DS, Yeon SH, Woo JS, Kweon UG, Yoon KY, Chang BS, Son SK, Kim YK, Seo KW, Lee KS, Yun SG (2005): Effects of rbST administrations at artificial insemination on conception and parturition rates in Hanwoo. Korean J Emb Trans 20:177-184.
6 Hafez ESE (1980): Reproduction in Farm Animals (4th ed). Lea & Febriger, Philadelphia.
7 Kimura M, Nakao T, Moriyoshi M, Kawata K (1987): Luteal phase deficiency as a possible cause of repeat breeding in dairy cows. Br Vet J 143:560-566.   DOI   ScienceOn
8 Lee SS, Noh SH, Park NH, Won YS (2010): Study on estimation of relative conception rate in Hanwoo bull. Korean J Emb Trans 25:57-66.
9 Park SR, Lee SK, Lee KS, Shin YS, Song YH, Lee SJ (2011): Analysis of reproduction and breeding status in Gangwon east area. Annals of Animal Resources Sciences 22:1-5.
10 Park SR, Kim H, Lee YS, Kim JW, Kim JB, Song YH, Lee HK, LeeSJ (2013): Studies on the failure rate of artificial insemination in Korean native cows. Reprod Dev Biol 37:23-27.   DOI   ScienceOn
11 Shelton K, Gayerie De Abreu MF, Hunter MG, Parkinson TJ, Lamming GE (1990): Luteal inadequacy during the early luteal phase of subfertile cows. J Reprod Fertil 90:1-10.   DOI   ScienceOn
12 Thatcher WW, Staples CR, Danet-Desnoyers G, Oldick B, Schmitt EP (1994): Embryo health and mortality in sheep and cattle. J Anim Sci 72(Suppl 3): 16-30.   DOI
13 Uhm SJ, Gupta MK, Das ZC, Lim KT, Yang JH, Lee HT (2011): Effect of 3-hydroxyflavone on pig embryos produced by parthenogenesis or somatic cell nuclear transfer. Reprod Toxicol 31:231-238.   DOI   ScienceOn