English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

KEHRLE, A. Reuse of progesterone intravaginal devices: from in vitro trial until FTAI conception rates [Reutilizacao de implantes de Progesterona: do teste in vitro as taxas de concepcao na IATF]. 2011. 89 f. Dissertacao (Mestrado em Ciencias) – Faculdade de Medicina Veterinaria e Zootecnia, Universidade de Sao Paulo, Sao Paulo, 2011. The aim of this study was to characterize progesterone devices and their reuse and to evaluate its efficiency. Three experiments were conducted: to assess the quantities of released P4 (in vitro trial), plasma levels provided (in vivo trial ovariectomized cows) and conception rates at FTAI (field trial – suckled beef cows). In vitro trial, the three reuses of devices were tested in a tablet dissolutor with six tanks, with a solution of alcohol / water (60:40) as way of dissemination. Two trials were conducted, totaling 12 implants. The third use of the device was added with a P4 ring (0.1 g) and in the fourth use two rings were added (0.1 g each). The new implants were tested in quadruplicate in a third trial, using the same methodology. Samples were collected at 2 min, 2, 4, 8, 12, 24, 48, 72 and 96h. The amounts of P4 were measured by High Performance Liquid Chromatography (HPLC). For the cumulative amount of P4, there was a time * treatment interaction (P = 0.0002). The amount of P4 differed (P = 0.0152) as the subsequent use of implants Cronipres ® and also over time (P 5), cyclicity (non-cycling and cycling), groups (1-4), postpartum period ( 5mounths) and breed (Nellore and Simmental x Nellore) and their interactions, eliminating the variables of the model when they showed p> 0.2. In the final model was consisted of treatment (p = 0.18), breed (p = 0.11) and group (p = 0.14). There was no statistical difference in conception rates between treatments (new device 55.1%, second use 47.9%, third use 48.7% and fourth use 44.15%) (p = 0.18). The overall conception rate was 49.1%.

Reutilização de implantes de progesterona: do teste in vitro às taxas de concepção na IATF.