Follicular Dynamics
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. Strategies to increment in vivo and in vitro embryo production and transfer in cattle
Abstract Knowledge of follicular wave dynamics obtained through the use of real-time ultrasonography and the development of the means by which follicular wave dynamics can be controlled have provided practical approaches for the in vivo and in vitro production and transfer of embryos in cattle. The elective control of follicular wave emergence and ovulation
Anim. Reprod.. Publicado em: 28/11/2019
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2. Environmental effects and repeatability of the follicular diameter in mares
ABSTRACT The objective of this study was to evaluate the effect of environment on follicular diameter and repeatability of the size of preovulatory follicles of mares. Temperature, rainfall, and photoperiod were measured, and their effects were evaluated on follicular dynamics. Data were studied by analysis of variance of follicular size and environment trai
R. Bras. Zootec.. Publicado em: 25/11/2019
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3. Effect of eCG on the follicular dynamics and vascularization of crossbred cows with different circulating progesterone concentrations during synchronization of ovulation in an FTAI protocol
RESUMO: Objetivou-se neste estudo avaliar o efeito do tratamento com gonadotrofina coriônica equina (eCG) sobre a dinâmica e função folicular em fêmeas mestiças com diferentes concentrações circulantes de P4 durante a sincronização da ovulação em um protocolo de IATF. Para tanto, foram utilizadas 30 fêmeas mestiças e submetidas a um protocolo d
Pesq. Vet. Bras.. Publicado em: 01/07/2019
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4. Follicular dynamics and production of oocytes in young Nellore heifers with energetic supplementation
To verify the effects of energy supplementation and fat on follicular dynamics, metabolic profile and the production of oocytes, 15 young heifers (Bos taurus indicus) with an average age of 14 months and with an initial weight of 256.35 kg were assigned to two treatments according to weight and follicular population as evaluated by ultrasonography: in T1 (1.
R. Bras. Zootec.. Publicado em: 2012-09
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5. Plasma urea nitrogen and progesterone concentrations and follicular dynamics in ewes fed proteins of different degradability
The effects of overfeeding with protein of different degradability on body condition, plasma urea nitrogen and progesterone concentrations, ovulation number and follicular dynamics were assessed in Santa Ines ewes. Twelve ewes were assigned to a randomized block design according to body weight and received overfeeding with soybean meal or with corn gluten me
Revista Brasileira de Zootecnia. Publicado em: 2012-07
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6. Effect of urea in the diet on ovarian follicular dynamics and plasma progesterone concentration in Alpine goats
To evaluate the effect of using urea in the diet on ovarian follicular dynamics and plasma urea and progesterone concentration, an experiment was carried out with 29 Alpine goats randomly distributed into four diets, each one containing 0%; 0.73%; 1.46% or 2.24% of urea on total dry matter. The follicular dynamics was monitored daily by ultrasonography. The
Revista Brasileira de Zootecnia. Publicado em: 2011-07
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7. Induction of ovulation in quarter horse mares through the use of deslorelin acetate and human chorionic gonadotrophin (hCG)
The aim this study was to compare two protocols of induction for ovulation by desloreline acetate and hCG in Quarter Horse mares. The choice of the animals was based on the observations by the estrus, by rectal palpation of the ovaries and by ultrassonography of the follicular dynamics. After estrus detection and follicle control, the measurement of the foll
Brazilian Archives of Biology and Technology. Publicado em: 2011-06
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8. Dinâmica folicular de vacas de corte tratadas com três protocolos de sincronização da ovulação =Ovarian follicular dynamics in beef cows treated with three protocols of synchronization of ovulation / Ovarian follicular dynamics in beef cows treated with three protocols of synchronization of ovulation
Background: Artificial insemination is an established and viable technique to accelerate the genetic advancement and economic return of the cattle. However, compromises the efficiency of detection of estrus results in low insemination rates. To avoid these problems in beef herd, synchronization protocols have been developed that allow inseminate large number
Publicado em: 2011
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9. Follicular dynamics in zebu cattle.
Objetivou-se neste trabalho estudar a dinamica folicular em vacas da raca Gir (Bos indicus). O crescimento e a atresia folicular foram monitorados diariamente ao longo de ciclos estrais completos (n = 15), utilizando-se um aparelho portatil de ultra-som. A atividade luteal em cada ciclo foi avaliada pela determinacao do nivel de progesterona plasmatica. Fora
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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10. Estudo da dinâmica folicular no protocolo de nove dias de sincronização de cios com o uso de um novo dispositivo de liberação sustentada de progesterona, associado ou não ao eCG, em ovelhas Santa Inês / Study of follicular dynamics during nine day estrus synchronization protocol using a new progesterone sustained release device, associated or not with eCG, in Santa Inês ewes
The present study aimed the assessment of follicular dynamics in Santa Inês ewes during the nine day estrus synchronization protocol, with or without the administration of eCG, using a new intravaginal silicon device, Primer-PR® (Tecnopec Brasil). In Experiment 1, ten ewes received the vaginal device on D0, which was removed on D9 and received 0,4mL of d-c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/03/2010
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11. Indução de codominância e dupla ovulação e novas abordagens em luteólise de bovinos / Induced codominance and double ovulation and new approaches on luteolysis in cattle
The day-4 ablation model for increasing the incidence of double ovulations in heifers was used for the chapters 2 and 3. In this regard, follicles ≥ 5 mm were ablated at 4 d post-ovulation to induce a prominent FSH surge and a new follicular wave, and two injections of prostaglandin F2α (12 h apart) were given two days later (6 d) to favor ovulati
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/02/2010
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12. Desempenho produtivo e reprodutivo e parâmetros sanguíneos de vacas leiteiras alimentadas com diferentes fontes de gordura no período de transição e inicio de lactação / Productive and reproductive performance and blood parameters of dairy cows feeding with different fat sources in transition period and early lactation
This study was carried out to evaluate the use of different fat sources in dairy rations, in transition period and early lactation on follicular dynamics, reproductive efficiency, nutrients intake and digestibility, composition and milk yield, composition of protein fraction and energy balance. Third Holstein cows, with production of 30,0 Kg/cow/day on previ
Publicado em: 2009