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Ovarian follicular dynamics, progesterone concentrations, pregnancy rates and transcriptional patterns in *Bos indicus* females with a high or low antral follicle count

Veterinary Science

Ovarian follicular dynamics, progesterone concentrations, pregnancy rates and transcriptional patterns in *Bos indicus* females with a high or low antral follicle count

M. A. D. Lima, F. Morotti, et al.

Explore the intriguing findings of a recent study by prominent researchers including Marina Amaro de Lima and Fábio Morotti that delves into how antral follicle count (AFC) influences ovarian dynamics and pregnancy rates in Nelore cattle. Discover how low AFC could lead to surprisingly higher pregnancy rates and differential gene expression insights.

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Playback language: English
Abstract
This study investigated the impact of antral follicle count (AFC) on ovarian follicular dynamics, pregnancy rates, progesterone levels, and gene expression in Nelore cattle (*Bos taurus indicus*). Cows with high AFC had larger ovaries than those with low AFC. Interestingly, cows with low AFC displayed larger dominant follicles at timed artificial insemination (TAI) and a trend towards higher progesterone levels. Pregnancy rates were higher in cows with low and very low AFC compared to those with high AFC. Gene expression analysis revealed differential expression of genes related to various cellular processes in oocytes and cumulus cells from low versus high AFC groups.
Publisher
Scientific Reports
Published On
Nov 11, 2020
Authors
Marina Amaro de Lima, Fábio Morotti, Bernardo Marcozzi Bayeux, Rômulo Germano de Rezende, Ramon Cesar Botigelli, Tiago Henrique Camara De Bem, Patrícia Kubo Fontes, Marcelo Fábio Gouveia Nogueira, Flávio Vieira Meirelles, Pietro Sampaio Baruselli, Juliano Coelho da Silveira, Felipe Perecin, Marcelo Marcondes Seneda
Tags
antral follicle count
ovarian dynamics
pregnancy rates
progesterone levels
gene expression
Nelore cattle
artificial insemination

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