This study evaluated the efficacy of a single gonadotropin-releasing hormone (GnRH) agonist on day 12 or human chorionic gonadotropin (hCG) on day 7 post-mating on pregnancy rate (PR) of repeat breeder buffaloes. Buffaloes (n=21) in heat were naturally mated, and divided into three groups (7 in each). Animals in the 1st group (G1) were i.m. injected with 5 ml GnRH on 12-day post-mating, while those in G2 were i.m. injected with 1500 IU of hCG on day 7 post-mating. In G3, animals were kept as control. Results show that PR was higher (P<0.05) in G1 (71.428) and G2 (57.142) than G3 (28.571). The peak of serum P4 was recorded (P<0.05) on day 15 in G2, and day 18 in G1 and G3. On days 21 and 24 post-mating, P4 was the highest (P<0.05) in G1, followed by G2, and the lowest in G3. Average CL diameter increased (P<0.05) CL in G1and G2 compared with G3 on days 15 and 18 post-mating. The concentration of P4 was higher in pregnant than in non-pregnant animals on different post-mating days, regardless of treatment. The concentration of P4 was the highest in pregnant of G2, and the lowest in non-pregnants of G3, being more obvious from 18 to 24-day post-mating. Injection of repeat breeder lactating buffaloes with 5 ml GnRH or 1500 IU hCG on day 12 and 7 post-mating, respectively, improved P4 production and pregnancy rate. GnRH treatment reduced the early embryonic loss showing the highest pregnancy rate to increase the farmer economy.
| Published in | Advances in Applied Physiology (Volume 5, Issue 2) |
| DOI | 10.11648/j.aap.20200502.17 |
| Page(s) | 48-57 |
| 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), 2024. Published by Science Publishing Group |
Buffaloes, Repeat Breeder, GnRH, hCG, Estrous, Pregnancy, Progesterone, CL Diameter
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APA Style
Mohamed Abd El-Fattah Abo-Farw, Osama Mostafa Elmalky, Emad Fawzy Elmaghraby, Hassab Allah Abdul Gwad Abu Elghait, Maged Ahmed Aboul-Omran. (2020). An Approach Study for Reducing the Early Embryonic Loss in Egyptian Buffalo-cows. Advances in Applied Physiology, 5(2), 48-57. https://doi.org/10.11648/j.aap.20200502.17
ACS Style
Mohamed Abd El-Fattah Abo-Farw; Osama Mostafa Elmalky; Emad Fawzy Elmaghraby; Hassab Allah Abdul Gwad Abu Elghait; Maged Ahmed Aboul-Omran. An Approach Study for Reducing the Early Embryonic Loss in Egyptian Buffalo-cows. Adv. Appl. Physiol. 2020, 5(2), 48-57. doi: 10.11648/j.aap.20200502.17
AMA Style
Mohamed Abd El-Fattah Abo-Farw, Osama Mostafa Elmalky, Emad Fawzy Elmaghraby, Hassab Allah Abdul Gwad Abu Elghait, Maged Ahmed Aboul-Omran. An Approach Study for Reducing the Early Embryonic Loss in Egyptian Buffalo-cows. Adv Appl Physiol. 2020;5(2):48-57. doi: 10.11648/j.aap.20200502.17
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author = {Mohamed Abd El-Fattah Abo-Farw and Osama Mostafa Elmalky and Emad Fawzy Elmaghraby and Hassab Allah Abdul Gwad Abu Elghait and Maged Ahmed Aboul-Omran},
title = {An Approach Study for Reducing the Early Embryonic Loss in Egyptian Buffalo-cows},
journal = {Advances in Applied Physiology},
volume = {5},
number = {2},
pages = {48-57},
doi = {10.11648/j.aap.20200502.17},
url = {https://doi.org/10.11648/j.aap.20200502.17},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.aap.20200502.17},
abstract = {This study evaluated the efficacy of a single gonadotropin-releasing hormone (GnRH) agonist on day 12 or human chorionic gonadotropin (hCG) on day 7 post-mating on pregnancy rate (PR) of repeat breeder buffaloes. Buffaloes (n=21) in heat were naturally mated, and divided into three groups (7 in each). Animals in the 1st group (G1) were i.m. injected with 5 ml GnRH on 12-day post-mating, while those in G2 were i.m. injected with 1500 IU of hCG on day 7 post-mating. In G3, animals were kept as control. Results show that PR was higher (P<0.05) in G1 (71.428) and G2 (57.142) than G3 (28.571). The peak of serum P4 was recorded (P<0.05) on day 15 in G2, and day 18 in G1 and G3. On days 21 and 24 post-mating, P4 was the highest (P<0.05) in G1, followed by G2, and the lowest in G3. Average CL diameter increased (P<0.05) CL in G1and G2 compared with G3 on days 15 and 18 post-mating. The concentration of P4 was higher in pregnant than in non-pregnant animals on different post-mating days, regardless of treatment. The concentration of P4 was the highest in pregnant of G2, and the lowest in non-pregnants of G3, being more obvious from 18 to 24-day post-mating. Injection of repeat breeder lactating buffaloes with 5 ml GnRH or 1500 IU hCG on day 12 and 7 post-mating, respectively, improved P4 production and pregnancy rate. GnRH treatment reduced the early embryonic loss showing the highest pregnancy rate to increase the farmer economy.},
year = {2020}
}
TY - JOUR T1 - An Approach Study for Reducing the Early Embryonic Loss in Egyptian Buffalo-cows AU - Mohamed Abd El-Fattah Abo-Farw AU - Osama Mostafa Elmalky AU - Emad Fawzy Elmaghraby AU - Hassab Allah Abdul Gwad Abu Elghait AU - Maged Ahmed Aboul-Omran Y1 - 2020/11/30 PY - 2020 N1 - https://doi.org/10.11648/j.aap.20200502.17 DO - 10.11648/j.aap.20200502.17 T2 - Advances in Applied Physiology JF - Advances in Applied Physiology JO - Advances in Applied Physiology SP - 48 EP - 57 PB - Science Publishing Group SN - 2471-9714 UR - https://doi.org/10.11648/j.aap.20200502.17 AB - This study evaluated the efficacy of a single gonadotropin-releasing hormone (GnRH) agonist on day 12 or human chorionic gonadotropin (hCG) on day 7 post-mating on pregnancy rate (PR) of repeat breeder buffaloes. Buffaloes (n=21) in heat were naturally mated, and divided into three groups (7 in each). Animals in the 1st group (G1) were i.m. injected with 5 ml GnRH on 12-day post-mating, while those in G2 were i.m. injected with 1500 IU of hCG on day 7 post-mating. In G3, animals were kept as control. Results show that PR was higher (P<0.05) in G1 (71.428) and G2 (57.142) than G3 (28.571). The peak of serum P4 was recorded (P<0.05) on day 15 in G2, and day 18 in G1 and G3. On days 21 and 24 post-mating, P4 was the highest (P<0.05) in G1, followed by G2, and the lowest in G3. Average CL diameter increased (P<0.05) CL in G1and G2 compared with G3 on days 15 and 18 post-mating. The concentration of P4 was higher in pregnant than in non-pregnant animals on different post-mating days, regardless of treatment. The concentration of P4 was the highest in pregnant of G2, and the lowest in non-pregnants of G3, being more obvious from 18 to 24-day post-mating. Injection of repeat breeder lactating buffaloes with 5 ml GnRH or 1500 IU hCG on day 12 and 7 post-mating, respectively, improved P4 production and pregnancy rate. GnRH treatment reduced the early embryonic loss showing the highest pregnancy rate to increase the farmer economy. VL - 5 IS - 2 ER -
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