Global ETD Search
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Showing 1 to 11 of 11 for “"Follicular Dynamics"”.
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Progestin regulation of follicular dynamics in beef cattle
… of 14 days of progestin (CIDR) treatment on follicular dynamics (length of follicular wave and maximum follicle diameter) and serum concentrations of progesterone (P4) in beef cattle treated with a new or previously used CIDR. Serum concentrations of P4 for heifers in the New and Used CIDR …
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Effect of once-daily suckling and parity on follicular dynamics in postpartum Brahman cows
Changes in follicular dynamics were monitored in forty-four Brahman multiparous (n=30) and primiparous (n=14) cows randomly assigned to control (n=22) and once-daily suckling (n=22) treatments. Daily transrectal ultrasonography images were taken from d 21 through 88 post-calving or detection of …
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Follicular dynamics, estradiol-17[beta] concentrations, and luteinizing hormone release following norgestomet implant insertion during estrus synchronization with melengestrol acetate
… administration altered LH pulse frequency and follicular dynamics. Multiparous Angus cows were randomly assigned to receive MGA (.5 mg*cow⁻¹*d⁻¹ ; MGA; n = 14) for 18 d or to receive MGA (.5 mg*cow·⁻¹ l*d⁻¹; MGA-N; n = 11) for 15 d and a norgestomet implant for 4 d beginning on d 15. …
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The effects of varying the interval from follicular wave emergence to progestin withdrawal on follicular dynamics and the synchrony of estrus in beef cattle
… examine the effects of varying the interval from follicular wave emergence to progestin removal on follicular dynamics and the synchrony of estrus. The experimental design was a 2x2x2 factorial with GnRH or estradiol-17 beta (E2) + progesterone (P4), controlled internal drug-releasing device …
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Resveratrol: therapeutic role in metabolic and reproductive function in obese broodmares
… measurements were collected biweekly and follicular dynamics were evaluated via transrectal ultrasonography every other day. Frequently-sampled intravenous glucose tolerance tests were conducted pre- and post- treatment. Insulin and glucose kinetics were analyzed via minimal model. …
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The efficiency of ultrasonorgraphy in monitoring ovarian structures and foetal development in goats, sheep and cattle as verified through laparoscopy and laparotomy
… and pregnancy diagnosis. In monitoring the follicular dynamics, daily ultrasonography (ULTS) scanning was done for 17 days in sheep and for 21 days in both goats and cattle. Follicles of diameter ≥ 3 mm were selected for analysis of growth, ovulation and regression. For determining the …
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Factors Influencing the Reproductive Efficiency of Dairy Herds in the Dominican Republic
… Year-round heat stress may result in abnormal follicular dynamics and decreased oocyte and sperm quality causing reproductive efficiency to decline drastically. The specific purpose of this project was to examine and characterize the reproductive practices and outcomes of the Dominican dairy …
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The Effects of a GnRH Antagonist, Cetrorelix, on Ovarian Function in Cattle
… effects of a GnRH antagonist, cetrorelix, on the follicular dynamics in cattle during different stages of follicular growth and in different endocrine milieus. The specific objective was to test the hypothesis that cetrorelix would induce regression of the dominant follicle and induce a new …
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Mechanisms by which di(2-ethylhexyl) phthalate and mono(2-ethylhexyl) phthalate disrupt ovarian folliculogenesis and steroidogenesis
… umbilical cord blood, breast milk, and ovarian follicular fluid samples. This is of public health concern because DEHP and MEHP are known endocrine disrupting chemicals and reproductive toxicants in the female. The ovary is a primary regulator of the female reproductive and endocrine systems. …
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Efeito de uréia na dieta sobre características reprodutivas e concentração de progesterona e metabólitos em cabras da raça Alpina
O primeiro experimento teve como objetivo avaliar o efeito do fornecimento de concentrações crescentes de uréia nas dietas de cabras da raça Alpina sobre a dinâmica folicular ovariana e a concentração de uréia, glicose e progesterona no plasma. Foram utilizadas 29 cabras, distribuídas …