The present study was conducted to investigate the influence of GnRH (Gonadotropin Releasing Hormone) administration on conception rate at the time of artificial insemination (AI) in healthy crossbred dairy cows. A total 90 cows were recruited and a preset questionnaire was answered by the owners. The cows were divided randomly in to two equal groups. GnRH treated group was injected intramuscularly (i/m) in the neck muscle with GnRH (Gonadorelin Acetate) at the time of AI. Again the treated group was divided randomly into three equal groups (15 cows each) for three different doses of GnRH (200, 250, 300 µg). The necessary information was taken from the owner with pretested questionnaire. The overall 71.11% conception rate was found in GnRH treated group on the other hands 55.56% conception rate was in control groups and having significant effect (P<0.05). There were significant effect (P<0.05) of age and milk yield and there were no significant effect of doses, timing, body condition score and parity within GnRH treated group. The study revealed that use of GnRH improved the conception rate in crossbred dairy cows at the time of AI.
| Published in | International Journal of Animal Science and Technology (Volume 1, Issue 1) |
| DOI | 10.11648/j.ijast.20170101.14 |
| Page(s) | 19-34 |
| 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), 2018. Published by Science Publishing Group |
Conception Rate, Crossbred Dairy Cows, GnRH and Artificial Insemination
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APA Style
Sm. Ahasanul Hamid, S. M. Kamruzzaman. (2018). Effects of GnRH on Conception Rate at the Time of Artificial Insemination in Crossbred Dairy Cows. International Journal of Animal Science and Technology, 1(1), 19-34. https://doi.org/10.11648/j.ijast.20170101.14
ACS Style
Sm. Ahasanul Hamid; S. M. Kamruzzaman. Effects of GnRH on Conception Rate at the Time of Artificial Insemination in Crossbred Dairy Cows. Int. J. Anim. Sci. Technol. 2018, 1(1), 19-34. doi: 10.11648/j.ijast.20170101.14
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Download@article{10.11648/j.ijast.20170101.14,
author = {Sm. Ahasanul Hamid and S. M. Kamruzzaman},
title = {Effects of GnRH on Conception Rate at the Time of Artificial Insemination in Crossbred Dairy Cows},
journal = {International Journal of Animal Science and Technology},
volume = {1},
number = {1},
pages = {19-34},
doi = {10.11648/j.ijast.20170101.14},
url = {https://doi.org/10.11648/j.ijast.20170101.14},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijast.20170101.14},
abstract = {The present study was conducted to investigate the influence of GnRH (Gonadotropin Releasing Hormone) administration on conception rate at the time of artificial insemination (AI) in healthy crossbred dairy cows. A total 90 cows were recruited and a preset questionnaire was answered by the owners. The cows were divided randomly in to two equal groups. GnRH treated group was injected intramuscularly (i/m) in the neck muscle with GnRH (Gonadorelin Acetate) at the time of AI. Again the treated group was divided randomly into three equal groups (15 cows each) for three different doses of GnRH (200, 250, 300 µg). The necessary information was taken from the owner with pretested questionnaire. The overall 71.11% conception rate was found in GnRH treated group on the other hands 55.56% conception rate was in control groups and having significant effect (P<0.05). There were significant effect (P<0.05) of age and milk yield and there were no significant effect of doses, timing, body condition score and parity within GnRH treated group. The study revealed that use of GnRH improved the conception rate in crossbred dairy cows at the time of AI.},
year = {2018}
}
TY - JOUR T1 - Effects of GnRH on Conception Rate at the Time of Artificial Insemination in Crossbred Dairy Cows AU - Sm. Ahasanul Hamid AU - S. M. Kamruzzaman Y1 - 2018/01/03 PY - 2018 N1 - https://doi.org/10.11648/j.ijast.20170101.14 DO - 10.11648/j.ijast.20170101.14 T2 - International Journal of Animal Science and Technology JF - International Journal of Animal Science and Technology JO - International Journal of Animal Science and Technology SP - 19 EP - 34 PB - Science Publishing Group SN - 2640-1312 UR - https://doi.org/10.11648/j.ijast.20170101.14 AB - The present study was conducted to investigate the influence of GnRH (Gonadotropin Releasing Hormone) administration on conception rate at the time of artificial insemination (AI) in healthy crossbred dairy cows. A total 90 cows were recruited and a preset questionnaire was answered by the owners. The cows were divided randomly in to two equal groups. GnRH treated group was injected intramuscularly (i/m) in the neck muscle with GnRH (Gonadorelin Acetate) at the time of AI. Again the treated group was divided randomly into three equal groups (15 cows each) for three different doses of GnRH (200, 250, 300 µg). The necessary information was taken from the owner with pretested questionnaire. The overall 71.11% conception rate was found in GnRH treated group on the other hands 55.56% conception rate was in control groups and having significant effect (P<0.05). There were significant effect (P<0.05) of age and milk yield and there were no significant effect of doses, timing, body condition score and parity within GnRH treated group. The study revealed that use of GnRH improved the conception rate in crossbred dairy cows at the time of AI. VL - 1 IS - 1 ER -
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