27 documents found, page 1 of 3

Anticipation of estrus and ovulation in Nelore heifers with low antral follicle...

El objetivo de este estudio fue establecer la relación entre el conteo de folículos antrales (AFC), el tiempo de pubertad y la respuesta ovárica en novillas Nelore sometidas a protocolos inseminación artificial a tiempo fijo (TAI). Novillas Nelore prepubescentes (Bos indicus; n = 30) fueron examinadas mediante ultrasonido transrectal y se grabaron videos de los ovarios para posterior CFA (≥ 3 mm). Después de AF...

Estrus expression and pregnancy rates in heifers primiparous and multiparous Ne...

Made available in DSpace on 2022-04-28T19:46:00Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01; We evaluated the effects of nulliparous, primiparous, and multiparous conditions on the estrus and pregnancy rates in females that did not show estrus but were treated with gonadotropin-releasing hormone (GnRH) at the time of timed artificial insemination (TAI). Nelore females (n = 531) were allocated a...

Ovarian superstimulation with FSH in Wagyu breed bovine donors impacts folicula...

The increase of the world population generates the need to raise the production of food of vegetal and animal origin. In Brazil, livestock farming has evolved, demonstrating the important role of the country in the production of food. In this way, researchers of this productive chain have been looking for technologies related to production and reproduction, above all, to the use of reproduction biotechnologies,...

Effect of the antral follicle count of Bos taurus × Bos indicus dairy cows on i...

Made available in DSpace on 2021-06-25T10:11:48Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-01; This study aimed to evaluate the potential of Girolando (Bos taurus × Bos indicus) cows with high and low antral follicle counts (AFC) for the in vitro production of bovine embryos (IVEP), as well as the pregnancy rates of the recipients of these embryos. Girolando cows (Bos taurus × Bos indicus) were c...

Synchronization of stage of follicle development before OPU improves embryo pro...

Made available in DSpace on 2021-06-25T11:02:34Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-10-01; Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq); In the present study, there was an evaluation of in vitro embryo production (IVEP) in Bos indicus donor cows with small or large antral follicle counts (AFCs) when there was synchronization of follicular dynamics among cows before ovu...

Ovarian follicular dynamics, progesterone concentrations, pregnancy rates and t...

Made available in DSpace on 2021-06-25T11:06:53Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-12-01; We evaluated the effect of the antral follicle count (AFC) on ovarian follicular dynamics, pregnancy rates, progesterone concentrations, and transcriptional patterns of genes in Nelore cattle (Bos taurus indicus) after a timed artificial insemination (TAI) programme. Cows were separated based on the AFC...

Lipid profile of in vitro embryos produced from Bos indicus cows with low and h...

Made available in DSpace on 2021-06-25T10:32:22Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-08-01; The quantity of lipids available for the initial development processes of in vitro-produced (IVP) embryos can reflect directly on embryonic quality and pregnancy rates. Therefore, the objective of this study was to investigate the lipid profile of IVP embryos from Bos indicus females with different antr...

Synchronization with estradiol benzoate in the presence of the corpus luteum in...

Reproductive biotechnologies emerge as an important element for livestock, however, some strategies must be modified to adapt the different breeding systems, such as the use of follicular synchronization protocols. This study aimed to evaluate follicular synchronization using estradiol benzoate, with the presence of the corpus luteum, on the in vitro embryo production (IVEP) from Wagyu oocytes donors. Routines ...

Estrus expression and pregnancy rates in heifers primiparous and multiparous Ne...

We evaluated the effects of nulliparous, primiparous, and multiparous conditions on the estrus and pregnancy rates in females that did not show estrus but were treated with gonadotropin-releasing hormone (GnRH) at the time of timed artificial insemination (TAI). Nelore females (n = 531) were allocated according to the following categories: nulliparous (n = 144), primiparous (n = 132), and multiparous (n = 255)....

Ovarian follicular dynamics, progesterone concentrations, pregnancy rates and t...