Effect of Ovarian Follicle Size on the Follicular Fluid’s Hormones in Local Iraqi Bovine

Authors

  • Hayder Mohammed Hassan Habeeb Al-Qasim Green University, Department of Animal Production, Babylon, Iraq
  • Amal Faisal Lafta Alabedi Al-Qasim Green University, Department of Animal Production, Babylon, Iraq

Keywords:

local cattle, follicle development, follicle fluid, estrogen, progesterone, testosterone, TSH

Abstract

Bovine reproductive physiology is a complex process that is closely linked to the cattle industry‘s effective production. Follicle diameter and thehormonal content offollicular fluid play an important role in determining ovum quality, overall embryo production, and bovine fertility. This study investigates the hormonal profile of follicular fluid in ovarian follicles of varying sizes in Iraqi cows. A total of 22 samples were collected from sexually mature, disease-free, and non-pregnant cows over a two-month period (July and August). Three of the follicle groups were classified: (2–5 mm), (6–9 mm), and (10–15 mm). Following visual measurement, follicular fluid was extracted, and concentrations of progesterone, estrogen, testosterone, and thyroid-stimulating hormone (TSH) were analyzed. The results showed a significant difference (p <0.0001) in progesterone levels 6–9 mm. Also, estrogen concentration was higher in 10–15 mm compared to the other groups. Testosterone concentration was higher in follicles (2–5 mm) compared to follicles (10–15 mm and 6–9 mm), respectively. Thyroid-stimulating hormone was higher in 2–5 mm compared to 10–15 mm follicles. The current outcomes participate to the thoughtful of known mechanisms of hormonal function in ovarian follicle growth in bovine species, showing that progesterone, estrogen, testosterone, and TSH are critical factors in these mechanisms.

Author Biography

  • Amal Faisal Lafta Alabedi, Al-Qasim Green University, Department of Animal Production, Babylon, Iraq

    Department of Animal Production, Al-Qasim Green University, Babylon, Iraq 51001

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Published

2025-09-30

Issue

Vol. 28 No. 3 (2025)

Section

Animal Science

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Copyright (c) 2025 Hayder Mohammed Hassan Habeeb, Amal Faisal Lafta Alabedi

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