What question did this study set out to answer?

The study aims to evaluate the effects of GnRH and hCG on the conception rate and progesterone levels in Holstein cows after artificial insemination.

April 21, 2026TURKISH JOURNAL OF VETERINARY AND ANIMAL SCIENCESOpen Access

Effects of GnRH and hCG administration on conception rate and the subsequent estrous cycle on day 12 following artificial insemination in Holstein cows

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MYMUSTAFA HİLMİ YARANOĞLU HEHÜSEYİN ERDEM

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Implication

Investigates how GnRH and hCG administration affects conception rates after artificial insemination in Holstein cows, suggesting implications for reproductive management.

Key Points

The study aims to evaluate the effects of GnRH and hCG on the conception rate and progesterone levels in Holstein cows after artificial insemination.
150 high-yielding Holstein cows were randomly assigned to treatment groups: GnRH, hCG, and Control.
GnRH and hCG treatments were administered on day 12 post-AI, with blood samples collected for progesterone analysis on specific days.
Pregnancy rates were monitored and ultrasound scans were performed to check for embryonic viability.
Pregnancy rates were 46%, 48%, and 42% for the GnRH, hCG, and Control groups, respectively, with no significant differences between groups.
GnRH and hCG groups had significantly higher progesterone levels than the Control group on day 16 post-AI.
One embryonic death was noted in the Control group during ultrasound assessments.

Cite This Study

YARANOĞLU et al. (2026) studied this question.

synapsesocial.com/papers/69e71423cb99343efc98d887 https://doi.org/10.55730/1300-0128.4408

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Implication

Investigates how GnRH and hCG administration affects conception rates after artificial insemination in Holstein cows, suggesting implications for reproductive management.

Effects of GnRH and hCG administration on conception rate and the subsequent estrous cycle on day 12 following artificial insemination in Holstein cows

Discussion

Member takes

Implication

Key Points

Cite This Study

Effects of GnRH and hCG administration on conception rate and the subsequent estrous cycle on day 12 following artificial insemination in Holstein cows

Discussion

Member takes

Implication

Key Points

Cite This Study

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