We report a unified chemoenzymatic asymmetric synthesis of five prostaglandins, featuring two enzymatic redox transformations and copper(ii)-catalyzed regioselective p-phenylbenzoylation.

Abstract The objective was to determine the effects of a decreased interval progesterone on ovulatory follicle prior fixed-timed artificial insemination (FTAI) in 7 & Synch estrous synchronization protocol using estrus expression (EE), FTAI pregnancy rates (AIPR) 37±2d, and overall (OPR) after 60d bull exposure 90±2d determined via ultrasound. Using conventional Angus semen, multiparous Ang...

Reproductive inefficiency is one of the most important and cost limiting factor to profitable small ruminant production in tropics. The aim this study was evaluate influence breed on oestrus response, reproductive oestradiol 17 β profiles Red Sokoto (RS), Sahelian (SH) West African Dwarf (WAD) goats following synchronisation with prostaglandin F2α (PGF2α). Thirty (N = 30) apparently healthy; RS...

This study was carried out to determine the effect of repeated injections cloprostenol sodium during early luteal phase on luteolytic capacity and hormonal changes Large white x Pietrain in Otukpo. A total ten (n = 10) oestrus sows were randomly divided into two groups. experiment a control. Group I 5) no synchronizing agent administered II received 6 doses 500 µg at days 5, 6, 7, 8, 9 10 oestr...

For this study, ½ blood nelore × aberdeen angus heifers (n = 40; 14 months) were divided into two groups: control (n=20; 310 kg) and pró-cio 304 kg). for group, 20g of homeopathic product (pró-cio®, real h, campo grande, brazil) was supplied together with corn eighteen days prior (d-18) to the beginning fixed-time artificial insemination protocol (ftai). on d0, all females received an intravagi...

El objetivo de este estudio fue evaluar el desempeño reproductivo en vacas y vaquillonas cruza índica con protocolo convencional proestro alargado, un sistema cría Chaco. Se utilizaron 264 secas 236 vaquillonas, condición corporal 4 a 6 (escala 1-9). día 0 se aplicó dispositivo 0,5 g progesterona (DIB) 2 mg benzoato estradiol. Los animales distribuyeron aleatoriamente grupos: a) (día 8) retiró ...

The objective of this experiment was to compare two progestins and three treatments for synchronizing follicular wave emergence and ovulation in protocols for fixed-time AI in beef heifers. On d 0 (beginning of the experiment), Angus and Angus-Simmental cross beef heifers at random stages of the estrous cycle either received a CIDR-B device (n = 257) or were started on 0.5 mg x anima(-1) x d(-1...

The process of luteolysis requires very subtly modulated coordination of different factors and regulation systems. Immune cells and cytokines were shown to be relevant for bovine luteolysis. The aim of this study was to investigate the detailed pattern of mRNA expression of the pro-inflammatory cytokines tumor necrosis factor alpha (TNFalpha), TNF receptor type 1 (TNF-R1), interleukin 1beta (IL...

The components of the IGF-system were shown to be differentially regulated in bovine antral follicles and corpora lutea (CL) during different stages of the estrous cycle, and to have important functions for specific stages. The aim of this study was to investigate the detailed pattern of mRNA expression of most constituents of the IGF-system and their possible involvement in prostaglandin (PG)F...