Effect of strategies to increase progesterone levels on fertility of bovine embryo transfer recipients - A meta-analysis

Alkan, Hasan; Tekindal, Mustafa Agah; Demirel, Mehmet Akif; Soyturk, Berrak Isik; Golbasi, Maide; Deniz, Yunus Emre; Satilmis, Fatma; Alkan, Kubra Karakas

doi:10.1016/j.theriogenology.2023.12.005

Cited by 1 publication

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“…The aCL is important in raising the level of progesterone (P4) in the bloodstream, which helps to address the deficiency in P4 that can lead to embryo mortality within the first 30 days after AI, especialy for high-yielding dairy cows [7-9]. Progesterone is crucial for maintaining the uterus during pregnancy, impacting the risk of embryo loss and pre-term labor [10][11][12]. It promotes an appropriate uterine environment for embryo elongation [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Reproductive Outcomes in High-Yielding Holstein Cows Following Administration of GnRH on Day 5 After Artificial Insemination

Borș

2024

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The objectives of this study was to assess the impact of a reproductive approach in high-yielding nulliparous and parous Holstein cows on the interestrus interval, estrus detection rates, conception rates, and pregnancy rates. The strategy involved giving GnRH on day 5 following artificial insemination (AI). For nulliparous cows, there appears to be no noticeable effect of GnRH therapy on the interestrus interval. In both groups, nearly all of the cows exhibited an 18–25-day cycle interval (P < 0.05). In the 18–25 day cycle period, the untreated multiparous cows exhibited the highest proportion (P < 0.05), while the treated group demonstrated the highest proportion (P < 0.05) in the 26–35 day cycle interval. The study found that the conception rate was higher in repeat breeder nulliparous and 3+ lactation treated Holstein cows compared with untreated ones. However, the cumulative heat detection rate, pregnancy rate and conception rates were similar in both groups (P > 0.05). Also, this study found that in the hottest months of the year, this therapeutic approach can't counteract the negative effect of heat stress in high-yielding dairy cows. Thus, it is not advised of using the hormonal method to create supplementary corpus luteum across the herd.

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Section: Introductionmentioning

confidence: 99%

Reproductive Outcomes in High-Yielding Holstein Cows Following Administration of GnRH on Day 5 After Artificial Insemination

Borș

2024

Preprint

View full text Add to dashboard Cite

show abstract

Effect of strategies to increase progesterone levels on fertility of bovine embryo transfer recipients - A meta-analysis

Cited by 1 publication

References 63 publications

Reproductive Outcomes in High-Yielding Holstein Cows Following Administration of GnRH on Day 5 After Artificial Insemination

Reproductive Outcomes in High-Yielding Holstein Cows Following Administration of GnRH on Day 5 After Artificial Insemination

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