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Download Using Gonadotropin Releasing Hormone Gnrh To Improve Dairy Cattle Conception Rates In The Tropics full books in PDF, epub, and Kindle. Read online Using Gonadotropin Releasing Hormone Gnrh To Improve Dairy Cattle Conception Rates In The Tropics ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author :
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (89 download)
Download or read book Using Gonadotropin-releasing Hormone (GnRH) to Improve Dairy Cattle Conception Rates in the Tropics written by and published by . This book was released on 1989 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (221 download)
Download or read book Using Gonadotropin Releasing Hormone (GhRH) to Improve Dairy Cattle Conception Rates in the Tropics written by and published by . This book was released on 1989 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Emmauel Maurice
Publisher :
ISBN 13 :
Total Pages : 118 pages
Book Rating : 4.:/5 (89 download)
Download or read book Use of Gonadotropin Releasing Hormone to Improve Fertility in "repeat Breeder" Dairy Cows written by Emmauel Maurice and published by . This book was released on 1982 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Chin Nyean Lee
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (89 download)
Download or read book Using Gonadotropin-releasing Hormone (GnRH) at Breeding to Enhance Corpus Lutem Function in Dairy Cows written by Chin Nyean Lee and published by . This book was released on 1990 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Divakar Ambrose
Publisher :
ISBN 13 :
Total Pages : 37 pages
Book Rating : 4.:/5 (76 download)
Download or read book Gonadotropin Releasing Hormone (GnRH) After Timed-insemination to Increase Pregnancy Rates in Dairy Cattle written by Divakar Ambrose and published by . This book was released on 2001 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 7 pages
Book Rating : 4.:/5 (89 download)
Download or read book Using Gonadotropin-releasing Hormone (GnRH) at Breeding to Enhance Corpus Luteum Function in Dairy Cows written by and published by . This book was released on 1990 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alan M. Willmore
Publisher :
ISBN 13 :
Total Pages : 168 pages
Book Rating : 4.:/5 (936 download)
Download or read book Increasing Pregnancy Rates in Dairy Cows Through the Use of Chronic Administration of a GnRH Agonist written by Alan M. Willmore and published by . This book was released on 2014 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of the present studies were to determine if chronic administration of a gonadotropin-releasing hormone (GnRH) agonist, Deslorelin, would increase circulating progesterone (P4) concentrations and subsequently increase pregnancy rates in dairy cattle. Administration of Deslorelin for 12 days increased luteal volume and circulating P4 concentrations in primiparous dairy cows, but increased only luteal volumes in multiparous cows. Treatment with Deslorelin increased day 45 pregnancy rates in cows compared to untreated controls. Chronic treatment with Deslorelin in dairy cattle; 1) increased luteal volume of the primary CL; 2) induced accessory CL; 3) increased circulating P4 concentration; 4) did not lengthen the estrous cycle; and 5) increased pregnancy rates. This hormonal strategy may represent a suitable model to address local effects of P4 and GnRH/luteinizing hormone on uterine environment and embryonic survival.
Author : Joseph Andrew Binversie
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (756 download)
Download or read book Modifying the Double-ovsynch Protocol to Include Human Chorionic Gonadotropin to Synchronize Estrus in Dairy Cattle written by Joseph Andrew Binversie and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this study were to determine whether conception, ovulation rates, presynchronization rates, or follicle and CL characteristics were altered after modifying the Double-Ovsynch (DO) protocol to include human chorionic gonadotropin (hCG) compared to the conventional DO protocol in dairy heifers and lactating dairy cows. We hypothesized that replacing the first injection of gonadotropin releasing hormone (GnRH) in the DO protocol with hCG would increase the proportion of females that ovulate, thus improving the presynchronization rate leading to increased conception rates. Ovulation rates were increased in cows administered hCG compared to GnRH, but subsequent synchronization, and conception rates did not differ between treatments. A greater proportion of hCG-treated cows tended to fail to have undergone luteolysis compared to those treated with GnRH. In conclusion, no improvement in overall fertility was achieved by replacing the first injection of GnRH in the DO protocol with hCG.
Author : Chin Nyean Lee
Publisher :
ISBN 13 :
Total Pages : 124 pages
Book Rating : 4.:/5 (89 download)
Download or read book Gonadotropin Releasing Hormone written by Chin Nyean Lee and published by . This book was released on 1981 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Jennifer A. Spencer
Publisher :
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.:/5 (917 download)
Download or read book Improving Dairy Cattle Fertility written by Jennifer A. Spencer and published by . This book was released on 2014 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: In cattle, early embryonic loss may occur due to the premature secretion of prostaglandin F2a (PGF2a) during days 14-16 after fertilization. The objective of the first experiment in this study was to determine aspirin's effects on PGF2a during the luteal phase of the estrous cycle in lactating dairy cows by characterizing blood plasma prostaglandin metabolites (PGFM) and progesterone (P4) concentrations. Aspirin decreased PGFM for 30 hours after last bolus administration and increased the day to luteolysis. The objective of the second experiment was to determine the effectiveness of the initial gonadotropin-releasing hormone (GnRH) in a 5-day CIDR (controlled internal drug releasing inserts)-Cosynch resynchronization protocol on fertility to second insemination in lactating dairy cows. No differences in pregnancy rate per artificial insemination (PR/AI) were observed between no GnRH (treatment) and GnRH (control) for the second insemination. Indicating that GnRH may not be necessary at the initiation of a CIDR-Cosynch resynchronization protocol.
Author : Joselin Calderón
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (139 download)
Download or read book Bibliographic Review of the Application of Ovulation Synchronization Protocol Based on Gonadotropin-Releasing Hormone (GnRH) and Insulin to Increase the Conception Rate in Crossbred Holstein Cows written by Joselin Calder√≥n and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The review work is based on analyzing and recording the effects of the application of ovulation synchronization protocols based on gonadotropin-releasing hormone (GnRH) and insulin for the increase of the pregnancy rate in crossbred Holstein cows in research published between 2013 and 2017. The study was conducted through the integrated search of relevant authors,Äô research using key criteria of both inclusion and exclusion, with results from 244 articles analyzed, where 118 analyzed the interaction of energy balance and ovulation of dairy cows. Fifty-three articles relate the effective ovulation synchronization protocol for the luteal process and 73 articles analyze the effect of insulin in the luteal process; and finally 18 articles are important to address the problem; insulin can be altered as a metabolic hormone by the increase of fat components of the feed ration consumed by cows, thus influencing ovarian function; ovulation synchronization is necessary, which can be based on GnRH and insulin.
Author : Richard M. Hopper
Publisher : John Wiley & Sons
ISBN 13 : 1118470850
Total Pages : 2206 pages
Book Rating : 4.1/5 (184 download)
Download or read book Bovine Reproduction written by Richard M. Hopper and published by John Wiley & Sons. This book was released on 2014-08-18 with total page 2206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bovine Reproduction is a comprehensive, current reference providing information on all aspects of reproduction in the bull and cow. Offering fundamental knowledge on evaluating and restoring fertility in the bovine patient, the book also places information in the context of herd health where appropriate for a truly global view of bovine theriogenology. Printed in full color throughout, the book includes 83 chapters and more than 550 images, making it the most exhaustive reference available on this topic. Each section covers anatomy and physiology, breeding management, and reproductive surgery, as well as obstetrics and pregnancy wastage in the cow. Bovine Reproduction is a welcome resource for bovine practitioners, theriogenologists, and animal scientists, as well as veterinary students and residents with an interest in the cow.
Author : Rodney D. Geisert
Publisher : Springer
ISBN 13 : 3319158562
Total Pages : 271 pages
Book Rating : 4.3/5 (191 download)
Download or read book Regulation of Implantation and Establishment of Pregnancy in Mammals written by Rodney D. Geisert and published by Springer. This book was released on 2015-10-08 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past few decades technological advances in transcriptomics, proteomics, metabolomics, and glycomics along with the ability to selectively knockout genes of interest has greatly advanced our understanding of maternal-conceptus interactions that are essential for the establishment and maintenance of a successful pregnancy. This knowledge provides a foundation from which to build research endeavors to help resolve infertility, embryonic loss and recurrent abortion in humans, captive wild animals and important farm species. The present volume on “Regulation of Implantation and Establishment of Pregnancy in Mammals” brings together current reviews from leading experts to address the diversity of mechanisms by which species establish and maintain pregnancy. Implantation in rodents, dogs, pigs, cattle, sheep, horses, primates, humans and embryonic diapause in wild species are discussed. Reviews will provide current knowledge on the role of endometrial steroid receptors, adhesion factors, cytokines, interferons, steroids, prostaglandins, growth factors and immune cells involved with regulation of conceptus development.
Author : H. H. Van Horn
Publisher : American Dairy Science Association
ISBN 13 :
Total Pages : 848 pages
Book Rating : 4.:/5 (89 download)
Download or read book Large Dairy Herd Management written by H. H. Van Horn and published by American Dairy Science Association. This book was released on 1992 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309264944
Total Pages : 399 pages
Book Rating : 4.3/5 (92 download)
Download or read book Using Science to Improve the BLM Wild Horse and Burro Program written by National Research Council and published by National Academies Press. This book was released on 2013-10-04 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using Science to Improve the BLM Wild Horse and Burro Program: A Way Forward reviews the science that underpins the Bureau of Land Management's oversight of free-ranging horses and burros on federal public lands in the western United States, concluding that constructive changes could be implemented. The Wild Horse and Burro Program has not used scientifically rigorous methods to estimate the population sizes of horses and burros, to model the effects of management actions on the animals, or to assess the availability and use of forage on rangelands. Evidence suggests that horse populations are growing by 15 to 20 percent each year, a level that is unsustainable for maintaining healthy horse populations as well as healthy ecosystems. Promising fertility-control methods are available to help limit this population growth, however. In addition, science-based methods exist for improving population estimates, predicting the effects of management practices in order to maintain genetically diverse, healthy populations, and estimating the productivity of rangelands. Greater transparency in how science-based methods are used to inform management decisions may help increase public confidence in the Wild Horse and Burro Program.
Author : George Fink
Publisher : Academic Press
ISBN 13 : 0123750970
Total Pages : 895 pages
Book Rating : 4.1/5 (237 download)
Download or read book Handbook of Neuroendocrinology written by George Fink and published by Academic Press. This book was released on 2012 with total page 895 pages. Available in PDF, EPUB and Kindle. Book excerpt: Neuroendocrinology underpins fundamental physiological, molecular, biological, and genetic principles such as the regulation of gene transcription and translation. This handbook highlights the experimental and technical foundations of each area's major concepts and principles.
Author : Veerasamy Sejian
Publisher : Springer Science & Business Media
ISBN 13 : 3642292054
Total Pages : 577 pages
Book Rating : 4.6/5 (422 download)
Download or read book Environmental Stress and Amelioration in Livestock Production written by Veerasamy Sejian and published by Springer Science & Business Media. This book was released on 2012-06-05 with total page 577 pages. Available in PDF, EPUB and Kindle. Book excerpt: Given the importance of livestock to the global economy, there is a substantial need for world-class reference material on the sustainable management of livestock in diverse eco-regions. With uncertain climates involving unpredictable extreme events (e.g., heat, drought, infectious disease), environmental stresses are becoming the most crucial factors affecting livestock productivity. By systematically and comprehensively addressing all aspects of environmental stresses and livestock productivity, this volume is a useful tool for understanding the various intricacies of stress physiology. With information and case studies collected and analyzed by professionals working in diversified ecological zones, this book explores the influence of the environment on livestock production across global biomes. The challenges the livestock industry faces in maintaining the delicate balance between animal welfare and production are also highlighted.
