The influence of pregnant mares' serum gonadotropin (PMSG) on reproductive performance of sheep bred by artificial insemination (AI) was studied in the anestrous and estrous seasons. Ewes were treated with progestogen-impregnated intravaginal sponges in June and October. One-half of the ewes in each trial received PMSG at sponge removal and were inseminated 55 h after sponge removal. One-half of the ewes in each treatment group were reinseminated 5 h later. Conception rates in June and October were 82 and 87% with PMSG and 18 and 48% without PMSG, respectively. The corresponding lambing rates were 60 and 74% with PMSG and 10 and 26% without PMSG. Litter size was unaffected by season or PMSG use. Embryonic mortality estimated over both trials was 22% after the first 2 wk of pregnancy with PMSG, but was 44% when PMSG treatment was omitted. Two inseminations were not superior to one. These data indicate that irrespective of season or double insemination, PMSG improves reproductive performance of ewes bred by AI at progestogen-synchronized estrus.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.2527/jas1983.572307x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Power control of an autonomous wind energy conversion system based on a permanent magnet synchronous generator with integrated pumping storage.
Sci Rep
November 2024
Department of Theoretical Electrical Engineering and Diagnostics of Electrical Equipment, Institute of Electrodynamics, National Academy of Sciences of Ukraine, Beresteyskiy, 56, Kyiv-57, Kyiv, 03680, Ukraine.
Wind energy plays a crucial role as a renewable source for electricity generation, especially in remote or isolated regions without access to the main power grid. The intermittent characteristics of wind energy make it essential to incorporate energy storage solutions to guarantee a consistent power supply. This study introduces the design, modeling, and control mechanisms of a self-sufficient wind energy conversion system (WECS) that utilizes a Permanent magnet synchronous generator (PMSG) in conjunction with a Water pumping storage station (WPS).
View Article and Find Full Text PDFMaternal dietary olive oil protects diabetic rat offspring from impaired uterine decidualization.
Placenta
November 2024
Universidad de Buenos Aires (UBA). Facultad de Medicina, Argentina; CONICET - UBA. Laboratory of Reproduction and Metabolism, Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Buenos Aires, Argentina. Electronic address:
Article Synopsis
- Maternal diabetes increases the risk of negative outcomes for both mothers and their offspring, and this study investigated whether changes in uterine decidualization in prepubertal offspring from diabetic rats could be influenced by diets including extra virgin olive oil (EVOO).
- The study involved mating control and mildly diabetic female rats with control males and analyzing their offspring after dietary regulation, focusing on key signaling pathways and microRNAs that affect uterine decidualization.
- Results indicated that offspring from diabetic mothers had disrupted signaling pathways in the uterus, but these negative effects were largely mitigated by the inclusion of EVOO in the maternal diet.
Modified fenestrated/branched endovascular aortic repair with short bridging stent to treat complex aortic dissection.
Front Cardiovasc Med
November 2024
Department of Vascular Surgery, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China.
Objectives: This study aims to improve fenestrated/branched endovascular aortic repair (F/B EVAR) through fabricating physician-modified stent grafts (PMSG) with short bridging stent to treat complex aortic dissection.
Methods: From November 2018 to January 2024, a total of 82 aortic dissection patients were treated by F/B EVAR combined with short bridging stents, including 19 aortic arch dissection patients and 63 thoracoabdominal aortic dissection patients. Inner or outer short bridging stents were applied to fabricate PMSG with the help of 3D-printing models intraoperatively.
Evaluation of Synthetic GnRH-Analog Peforelin with Regard to Oocyte Differentiation and Follicular Development in C57BL/6J Mice.
Animals (Basel)
October 2024
Biomedical Center, Core Facility Animal Models, Faculty of Medicine, Ludwig-Maximilians-Universität München, Großhaderner Straße 9, 82152 Planegg-Martinsried, Germany.
In biomedical research, ovulation induction is a critical step in the reproductive biology of laboratory animals. This study evaluates the efficacy of peforelin, a synthetic gonadotropin-releasing hormone (GnRH) analog, in comparison to pregnant mare serum gonadotropin (PMSG, synonym: eCG), traditionally used for ovulation induction in mice. PMSG is derived from the serum of pregnant horses, and its production is becoming increasingly problematic due to animal welfare concerns and regulatory restrictions.
View Article and Find Full Text PDFPorous Magnetic Soft Grippers for Fast and Gentle Grasping of Delicate Living Objects.
Adv Mater
November 2024
Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, 230026, P. R. China.
Magnetic soft grippers have attracted intensive interest due to their untethered controllability, rapid response, and biological safety. However, manipulating living objects requires a simultaneous increase in shape adaptability and gripping force, which are typically mutually exclusive. Increasing the magnetic particle content enhances the magnetic strength but also increases the elastic modulus, leading to low adaptability and high impact force.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!