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Outcome of Gonadotropin Releasing Hormone Treatment 12 Days Post AI and Double Insemination on Conception Rate of Repeat Breeding Cows in Mekelle, Tigray, Ethiopia

Received: 31 January 2015     Accepted: 13 February 2015     Published: 25 February 2015
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Abstract

The aim of the present study was to determine outcome of gonadotropin releasing hormone analogue given 12 days post AI and double inseminations during estrous period of dairy cattle and improvement of conception rate. Field trial was carried out on repeat breeding cross breed dairy cows which are lactating, apparently healthy and exhibits estrus regularly. A total of Sixty three repeat-breeding cows from twenty eight herds were selected and assigned randomly in to three equal groups G (1, 2 and 3); two treated and one control group. Group1 (n=21) cattle were treated intramuscularly with 10 µg buserelin acetate 12 days post AI. Group2 (n=21) cattle were inseminated twice during estrus exhibition with 6-8 hours interval. Group3 (n=21) cattle were receive no treatment, inseminated once as heat was detected and considered as a control group. Dairy cows were examined for pregnancy after three months through rectal palpation. Pregnancy rates recorded were 52%, 38% and 28% in G1, G2 and G3 respectively. Conception rates of treated groups (G1 and G2) exceed control group by 24% and 10% respectively and showed a significant statistical variation (P<0.05) as compared to control groups. Comparison between treated groups also indicated that G1 has statistical significant difference from G2. From this experiment, it is recommended that use of GnRH 12 days can improve pregnancy rate as compared to double insemination and single service.

Published in Animal and Veterinary Sciences (Volume 3, Issue 2)
DOI 10.11648/j.avs.20150302.12
Page(s) 41-45
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2015. Published by Science Publishing Group

Keywords

Crossbred Cattle, Estrus, Double Insemination, GnRH Analogue, Pregnancy Rates

References
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[9] Karg, H., Claus, R., Gunzler, O., Rattenberger, E., Pirchner, F. (1980). Hormonal Recognition of cyclicity and infertility in cows under practical conditions. In proceeding of the 11thWorld congress. Disease of cattle Israel, Pp.885-894.
[10] Levine HD. The Repeat Breeder Cow. Bovine Practioner. 1999;33:97–105.
[11] Lucy MC. Reproductive loss in high-producing dairy cattle: Where will it end? J Dairy Sci. 2001;84(6):1277–1293.
[12] Kharche, S. and Srivastava, S. (2007). Dose dependent effect of GnRH analogue on pregnancy rate of repeat breeder cross breed cows. Indian Veterinary Research institute Anim. Repro. Sci. India.
[13] Markandeya, N. (2006). Approaches to enhance conception rate and embryo survivability, Department of Gynecology and Obstetrics Veterinary College, Reproductive Techniques to augment Fertility in dairy animals. Karnataka Veterinary Animal and Fisheries Sciences University.
[14] Mauurer, R. and Echternkamp S. (1985). Repeat breeder Females in Beef cattle Influences and causes, J.Anim Sci, 61:624.
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[17] Morgan, W .Lean, I. (1993). Gonadotropin Releasing Hormone treatment in cattle a Meta analysis of effects on conception at the time of insemination. Aust Vet J 70:205-9.
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[19] Petrie,A. and Watson, P.(2000): Statistics for Veterinary, Revised edition. Blackwel Science Ltd., Osney Mead Oxford OX2 OEL, 25 John Street, London WCIN2 BS.
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[22] Stevensen, J, Thompson, W. Forbes ,G.Lamb ,D. Gerieger,L,Corah .(2000).Synchronizing estrus and ovulation in beef cows after combination of GnRH, norgestment and prostaglandin with or without timed ovulation .J Anim sci,78:1747-1758.
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Cite This Article
  • APA Style

    Birhanu Hailu, Berihu Gebrekidan, Solmon Raju, Alemselam Birhanu, Gebrehiwot Tadesse, et al. (2015). Outcome of Gonadotropin Releasing Hormone Treatment 12 Days Post AI and Double Insemination on Conception Rate of Repeat Breeding Cows in Mekelle, Tigray, Ethiopia. Animal and Veterinary Sciences, 3(2), 41-45. https://doi.org/10.11648/j.avs.20150302.12

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    ACS Style

    Birhanu Hailu; Berihu Gebrekidan; Solmon Raju; Alemselam Birhanu; Gebrehiwot Tadesse, et al. Outcome of Gonadotropin Releasing Hormone Treatment 12 Days Post AI and Double Insemination on Conception Rate of Repeat Breeding Cows in Mekelle, Tigray, Ethiopia. Anim. Vet. Sci. 2015, 3(2), 41-45. doi: 10.11648/j.avs.20150302.12

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    AMA Style

    Birhanu Hailu, Berihu Gebrekidan, Solmon Raju, Alemselam Birhanu, Gebrehiwot Tadesse, et al. Outcome of Gonadotropin Releasing Hormone Treatment 12 Days Post AI and Double Insemination on Conception Rate of Repeat Breeding Cows in Mekelle, Tigray, Ethiopia. Anim Vet Sci. 2015;3(2):41-45. doi: 10.11648/j.avs.20150302.12

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  • @article{10.11648/j.avs.20150302.12,
      author = {Birhanu Hailu and Berihu Gebrekidan and Solmon Raju and Alemselam Birhanu and Gebrehiwot Tadesse and Gezahign Alemayehu},
      title = {Outcome of Gonadotropin Releasing Hormone Treatment 12 Days Post AI and Double Insemination on Conception Rate of Repeat Breeding Cows in Mekelle, Tigray, Ethiopia},
      journal = {Animal and Veterinary Sciences},
      volume = {3},
      number = {2},
      pages = {41-45},
      doi = {10.11648/j.avs.20150302.12},
      url = {https://doi.org/10.11648/j.avs.20150302.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.avs.20150302.12},
      abstract = {The aim of the present study was to determine outcome of gonadotropin releasing hormone analogue given 12 days post AI and double inseminations during estrous period of dairy cattle and improvement of conception rate. Field trial was carried out on repeat breeding cross breed dairy cows which are lactating, apparently healthy and exhibits estrus regularly. A total of Sixty three repeat-breeding cows from twenty eight herds were selected and assigned randomly in to three equal groups G (1, 2 and 3); two treated and one control group. Group1 (n=21) cattle were treated intramuscularly with 10 µg buserelin acetate 12 days post AI. Group2 (n=21) cattle were inseminated twice during estrus exhibition with 6-8 hours interval. Group3 (n=21) cattle were receive no treatment, inseminated once as heat was detected and considered as a control group. Dairy cows were examined for pregnancy after three months through rectal palpation. Pregnancy rates recorded were 52%, 38% and 28% in G1, G2 and G3 respectively. Conception rates of treated groups (G1 and G2) exceed control group by 24% and 10% respectively and showed a significant statistical variation (P<0.05) as compared to control groups. Comparison between treated groups also indicated that G1 has statistical significant difference from G2. From this experiment, it is recommended that use of GnRH 12 days can improve pregnancy rate as compared to double insemination and single service.},
     year = {2015}
    }
    

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    T1  - Outcome of Gonadotropin Releasing Hormone Treatment 12 Days Post AI and Double Insemination on Conception Rate of Repeat Breeding Cows in Mekelle, Tigray, Ethiopia
    AU  - Birhanu Hailu
    AU  - Berihu Gebrekidan
    AU  - Solmon Raju
    AU  - Alemselam Birhanu
    AU  - Gebrehiwot Tadesse
    AU  - Gezahign Alemayehu
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    T2  - Animal and Veterinary Sciences
    JF  - Animal and Veterinary Sciences
    JO  - Animal and Veterinary Sciences
    SP  - 41
    EP  - 45
    PB  - Science Publishing Group
    SN  - 2328-5850
    UR  - https://doi.org/10.11648/j.avs.20150302.12
    AB  - The aim of the present study was to determine outcome of gonadotropin releasing hormone analogue given 12 days post AI and double inseminations during estrous period of dairy cattle and improvement of conception rate. Field trial was carried out on repeat breeding cross breed dairy cows which are lactating, apparently healthy and exhibits estrus regularly. A total of Sixty three repeat-breeding cows from twenty eight herds were selected and assigned randomly in to three equal groups G (1, 2 and 3); two treated and one control group. Group1 (n=21) cattle were treated intramuscularly with 10 µg buserelin acetate 12 days post AI. Group2 (n=21) cattle were inseminated twice during estrus exhibition with 6-8 hours interval. Group3 (n=21) cattle were receive no treatment, inseminated once as heat was detected and considered as a control group. Dairy cows were examined for pregnancy after three months through rectal palpation. Pregnancy rates recorded were 52%, 38% and 28% in G1, G2 and G3 respectively. Conception rates of treated groups (G1 and G2) exceed control group by 24% and 10% respectively and showed a significant statistical variation (P<0.05) as compared to control groups. Comparison between treated groups also indicated that G1 has statistical significant difference from G2. From this experiment, it is recommended that use of GnRH 12 days can improve pregnancy rate as compared to double insemination and single service.
    VL  - 3
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Author Information
  • Samara University, College of Veterinary Medicine, Department of Veterinary Epidemiology and Preventive Medicine, Samara, Ethiopia

  • Mekelle University, College of Veterinary Medicine, Mekelle, Ethiopia

  • Mekelle University, College of Veterinary Medicine, Mekelle, Ethiopia

  • Mekelle University, College of Veterinary Medicine, Mekelle, Ethiopia

  • Mekelle University, College of Veterinary Medicine, Mekelle, Ethiopia

  • Samara University, College of Veterinary Medicine, Department of Veterinary Epidemiology and Preventive Medicine, Samara, Ethiopia

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