Puberty and parturition on the antral follicle count of female Nelore beef cattle

Author:

Pfeifer Luiz Francisco Machado1ORCID,Oliveira Júnior Jair Sábio de2ORCID,Seneda Marcelo Marcondes3ORCID,Camargo Higor Souza de3ORCID,Morotti Fábio3ORCID,Andrade Evelyn Rabelo4ORCID,Moreira Elizângela Mirian5ORCID,Andrade Jéssica Souza6ORCID,Silva George Moreira da1ORCID,Porto Marlos Oliveira4ORCID,Cavali Jucilene4ORCID

Affiliation:

1. Embrapa Rondônia, Brazil

2. Centro Universitário Unifacimed, Brazil

3. Universidade Estadual de Londrina, Brazil

4. Universidade Federal de Rondônia, Brazil

5. Universidade Estadual de Maringá, Brazil

6. Programa de Pós-Graduação em Biodiversidade e Biotecnologia, Brazil

Abstract

Abstract The objective of this work was to investigate whether puberty and parturition alter the antral follicle count (AFC) in female Nelore (Bos indicus) beef cattle. Two experiments were carried out to compare AFC between the prepubertal and pubertal periods and between the prepubertal and postpartum periods. AFC and follicle concentrations did not differ between the prepubertal and pubertal periods. However, the ovarian area increased after puberty. In addition, AFC and the ovarian area were greater in the postpartum than in the prepubertal period. Therefore, AFC is not affected by the puberty of Nelore heifers, but increases significantly when the prepubertal heifers become cows.

Publisher

FapUNIFESP (SciELO)

Subject

Agronomy and Crop Science,Animal Science and Zoology

Reference13 articles.

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3. Composition and characteristics of follicular waves during the bovine estrous-cycle;GINTHER O.J.;Animal Reproduction Science,1989

4. Antral follicle count reliably predicts number of morphologically healthy oocytes and follicles in ovaries of young adult cattle;IRELAND J.L.H.;Biology of Reproduction,2008

5. Does size matter in females? An overview of the impact of the high variation in the ovarian reserve on ovarian function and fertility, utility of anti-Mullerian hormone as a diagnostic marker for fertility and causes cattle;IRELAND J.J.;Biology of Reproduction,2011

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