Effect of PGF2α and GnRH administration on reproductive performance in Ghezel ewes

Hajibemani, Abolfazl; Sheikhalislami, Hossein; shahrbabak, Mohammad javad behzadi; Jozani, Raziallah Jafari; Ommati, Mohammad Mehdi

doi:10.1016/j.prostaglandins.2022.106640

Cited by 4 publications

(6 citation statements)

References 38 publications

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“…This result was similar to estrus synchronization in Ongole cross using intramuscular PGF2α alone and combined with GnRH 24 hours later which achieved onset of estrus in 75.9 ± 0.8 and 41.6 ± 28.4 hours respectively et al, 2020). PGF2α injection at the end of estrus cycle induced CL regression than those at early luteal phase (Hajibemani et al, 2022). On PGF2α injection in the early luteal phase, it is possible that CL was not mature enough to respond to luteolysis (Levy et al, 2000).…”

Section: Discussionmentioning

confidence: 99%

Intracervical Artificial Insemination using Frozen Semen of Boer buck on Pote Does at Different Times of Estrus

Susilowati,

Tri Wahyu Suprayogi,

Tatik Hernawati

et al. 2023

Ovz

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Pote goats are kept by the rural community in Bangkalan Regency, Madura Island, Indonesia. Estrus symptoms in goats are usually unclear, causing low fertility. This study aimed to determine the intracervical artificial insemination at early and mid-estrus on the Pote does. The 24 the does were randomly divided into two groups and estrous synchronization with PGF2α of 200 µg intramuscularly, twice injections with 11 days intervals. The T1 groups of estrus the Pote does were inseminated at early estrus (0-12 hours). Meanwhile, T2 groups of estrus the Pote does were inseminated at mid-estrus (12-24 hours after signs of estrus appeared. The insemination conducted artificially using post-thawed Boer semen. The observed variables were non-return rate at day 21 post-insemination (NRR21), and pregnancy rate (PR) based on abdominal palpation diagnosis. The result showed that post-thawed Boer buck was qualified (sperm motility more than 40%) for artificial insemination. All of the Pote does were estrus after twice PGF2α intramuscular injection with 11 days intervals. The onset of estrus was 48-72 hours after the second injection PGF2α. The NRR21 and PR ranged from 66.66-100% and 37.50-66.66%, respectively. The NRR21 and PR of the T2 group were higher than those of the T1 group. It could be concluded that intracervical artificial insemination on Pote the does at mid-estrus were more effective, resulting in higher NRR21 and PR than those at early estrus.

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Section: Discussionmentioning

confidence: 99%

Intracervical Artificial Insemination using Frozen Semen of Boer buck on Pote Does at Different Times of Estrus

Susilowati,

Tri Wahyu Suprayogi,

Tatik Hernawati

et al. 2023

Ovz

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“…Consequently, they cannot be effectively employed during seasonal anestrus [ 61 ]. Hence, outside of the breeding season, progesterone (P4) plays a pivotal role in most synchronization protocols for ewes [ 47 ]. It is administered through various methods, including the controlled internal drug-releasing (CIDR) device, medroxyprogesterone acetate (MAP), and fluorogestone acetates (FGA) to facilitate estrous synchronization [ 47 ].…”

Section: Exogenous Factorsmentioning

confidence: 99%

“…Hence, outside of the breeding season, progesterone (P4) plays a pivotal role in most synchronization protocols for ewes [ 47 ]. It is administered through various methods, including the controlled internal drug-releasing (CIDR) device, medroxyprogesterone acetate (MAP), and fluorogestone acetates (FGA) to facilitate estrous synchronization [ 47 ]. Additionally, to enhance fertility, it is common practice to supplement P4-based protocols with the administration of gonadotropins like eCG, pregnant mare serum gonadotropin (PMSG), and gonadotropin-releasing hormone (GnRH) towards the end of the synchronization process [ 45 , 47 , 63 ].…”

Section: Exogenous Factorsmentioning

confidence: 99%

“…It is administered through various methods, including the controlled internal drug-releasing (CIDR) device, medroxyprogesterone acetate (MAP), and fluorogestone acetates (FGA) to facilitate estrous synchronization [ 47 ]. Additionally, to enhance fertility, it is common practice to supplement P4-based protocols with the administration of gonadotropins like eCG, pregnant mare serum gonadotropin (PMSG), and gonadotropin-releasing hormone (GnRH) towards the end of the synchronization process [ 45 , 47 , 63 ]. The typical dosage of MAP often employed for estrous synchronization is 60 mg, although it is worth noting that doses below 40 mg can also yield effective results [ 46 , 64 ].…”

Section: Exogenous Factorsmentioning

confidence: 99%

“… Exogenous factors influencing ovine artificial insemination success. Hormonal factors: [ 45 , 46 , 47 ]; semen handling and insemination techniques: [ 48 , 49 ]; heat stress: [ 50 ]; nutritional stress: [ 51 , 52 , 53 ]. …”

Section: Figurementioning

confidence: 99%

See 2 more Smart Citations

Exploring Endogenous and Exogenous Factors for Successful Artificial Insemination in Sheep: A Global Overview

El Amiri,

Rahim

2024

Veterinary Sciences

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Artificial insemination (AI) plays a vital role in animal breeding programs. AI is applied to enhance animal genetics and facilitate the widespread integration of desirable characteristics with a high potential for productivity. However, in sheep, this biotechnology is not commonly practicable due to multi-factorial challenges, resulting in inconsistent outcomes and unpredictable results. Thoughtful selection of semen donors and recipients based on genetic merit deeply impacts ovine AI outcomes. Additionally, endogenous factors such as breed, age, fertility traits, genetic disorders, and cervical anatomy in ewes contribute to ovine AI success. Extensive research has studied exogenous influences on sexual behavior, reproductive health, and hormonal regulation, all impacting ovine AI success. These exogenous factors include techniques like estrus induction, synchronization, semen handling methods (fresh/chilled/frozen), and insemination methods (cervical/laparoscopic), as well as nutritional factors and climatic conditions. This overview of the literature highlights the endogenous and exogenous challenges facing successful ovine AI and proposes strategies and best practices for improvement. This paper will serve as a guide for understanding and optimizing the success of ovine AI.

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Effect of post-mating GnRH or TAK-683 (Kisspeptin analog) treatment on the reproductive performance and serum progesterone concentration in ewes during the non-breeding season

Uyanık,

Abay,

Demiral

2024

Small Ruminant Research

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Effect of PGF2α and GnRH administration on reproductive performance in Ghezel ewes

Cited by 4 publications

References 38 publications

Intracervical Artificial Insemination using Frozen Semen of Boer buck on Pote Does at Different Times of Estrus

Intracervical Artificial Insemination using Frozen Semen of Boer buck on Pote Does at Different Times of Estrus

Exploring Endogenous and Exogenous Factors for Successful Artificial Insemination in Sheep: A Global Overview

Effect of post-mating GnRH or TAK-683 (Kisspeptin analog) treatment on the reproductive performance and serum progesterone concentration in ewes during the non-breeding season

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