The objective of this study was to evaluate the effect a low dose hCG or FSH on follicle growth and pregnancy per artificial insemination (AI) in crossbreed beef heifers subjected split-time AI program. All (n = 386) were 7-d Co-synch protocol an intravaginal controlled internal drug release (CIDR) device (GnRH CIDR insertion; 7 days later PGF2α, removal, application tail head estrus detection ...

The present study was undertaken to examine the efficacy of a treatment regime using a controlled internal drug release (CIDR) device in conjunction with injections of gonadotropin releasing hormone (GnRH) and prostaglandin F2α (PGF2α) on conception rate of repeat-breeding Iraqi buffaloes. Data were collected from 100 buffaloeswith repeat breeding in Ninevehprovince housed at six private dairy ...

Introduction Although estrous synchronization has been cited over the past several decades to have significant impact on reproductive performance of beef cattle (Schafer et al., 1990), only a limited percent of beef cattle operations in the U.S. synchronize estrus. In a summary by the National Animal Health Monitoring Systems (NAHMS) only 3.3% of beef cattle in the U.S. were being synchronized ...

During growth under conditions of glucose and oxygen excess, Staphylococcus aureus predominantly accumulates acetate in the culture medium, suggesting that the phosphotransacetylase-acetate kinase (Pta-AckA) pathway plays a crucial role in bacterial fitness. Previous studies demonstrated that these conditions also induce the S. aureus CidR regulon involved in the control of cell death. Interest...

The aim of this study was to enhance the ovulation and subsequent embryo production of equine chorionic gonadotrophin (eCG) superovulated goats by supplementing with human chorionic gonadotrophin (hCG) or gonadotrophin releasing hormone (GnRH). Thirty crossbred donor does were oestrus synchronized using controlled internal drug release (CIDR) device and superovulated using 1500 IU eCG. Then all...

The objective of this study was to quantify fixed-time AI (TAI) pregnancy rates resulting from reduced intervals between 2 25 mg dinoprost tromethamine (PG) injections on d 5 of a 5-d CIDR-Co-synch estrus synchronization program. Angus and Angus-influenced commercial cows (n = 873) maintained on native pasture at 3 locations were randomly assigned to treatments, blocking for BCS and postpartum ...

This experiment was conducted to determine the reproductive performance of Kurdi ewes which were artificially inseminated (AI). In total 240 Kurdi ewes, weighing 49.5±2.5 kg were used in the trail. The ewes were allocated randomly to one of four groups (n=60/in each group). For synchronizing, controlled internal drug release (CIDR) was placed in the vagina of all individuals for 14 days. After ...

The effects of estrus synchronization with prostaglandin F(2α) (PGF(2α)) and Controlled Internal Drug Release Device (CIDR) on ensuing antral follicular development were documented and compared to natural estrous cycles of non-seasonal tropical goats. Two to six follicular waves were observed, with the three-follicular wave pattern being most frequently observed (58%), followed by four follicul...

The step-economical synthesis of lobelanine involving a ring closing double aza-Michael (RCDAM) reaction is revisited and successfully extended to the synthesis of various configurationally more stable analogues. Owing to the presence of a configurationally labile β-aminoketone subunit, lobelanine is prone to self-catalyze mutarotation in solution. Through the synthesis of original lobelanine a...