Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
The Effects Of Post Insemination Progesterone Supplementation On Pregnancy Rates And Serum Progesterone In Dairy Cows Exposed To Mild Heat Stress
Download The Effects Of Post Insemination Progesterone Supplementation On Pregnancy Rates And Serum Progesterone In Dairy Cows Exposed To Mild Heat Stress full books in PDF, epub, and Kindle. Read online The Effects Of Post Insemination Progesterone Supplementation On Pregnancy Rates And Serum Progesterone In Dairy Cows Exposed To Mild Heat Stress ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis The Effects of Post-insemination Progesterone Supplementation on Pregnancy Rates and Serum Progesterone in Dairy Cows Exposed to Mild Heat Stress by :
Download or read book The Effects of Post-insemination Progesterone Supplementation on Pregnancy Rates and Serum Progesterone in Dairy Cows Exposed to Mild Heat Stress written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Two trials were conducted to determine the effects of progesterone administered by controlled intravaginal drug release devices (CIDRs) on pregnancy rates and serum progesterone concentrations in heat stressed dairy cows. Trial 1 utilized a CIDR from days 5 through 12 after breeding, and trial 2 utilized a CIDR from days 5 through 19 after breeding. Rectal temperatures and blood samples were obtained from cows every other day throughout the trial. Serum progesterone concentrations were measured with radioimmunoassay (RIA). Pregnancy status was determined on approximately day 30 via transrectal ultrasonography. Mean temperature-humidity index (THI) values were 73.5 for trial 1 and 75.1 for trial 2. These THI values indicated that cows in both trials were subjected to mild heat stress conditions. No significant differences were found between CIDR treated and control cows in serum progesterone concentrations. In trial 1, pregnancy rates were 31.8% vs. 33.3% for control and CIDR treated cows, respectively (p = 0.25). In trial 2 pregnancy rates were 33.3% vs. 26.7% for control and CIDR treated cows, respectively (p = 0.29). In conclusion, supplemental progesterone administered to heat stressed dairy cows after breeding did not improve pregnancy rates or increase serum progesterone concentrations.
Book Synopsis The Effects of Post-insemination Progesterone Supplementation on Pregnancy Rates and Serum Progesterone in Dairy Cows Exposed to Mild Heat Stress by : Randolph Erwin Carothers
Download or read book The Effects of Post-insemination Progesterone Supplementation on Pregnancy Rates and Serum Progesterone in Dairy Cows Exposed to Mild Heat Stress written by Randolph Erwin Carothers and published by . This book was released on 2006 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: heat stress, progesterone, CIDR, dairy cattle.
Book Synopsis Evidence that the Timing of the Increase in Progesterone Post-breeding Affects Pregnancy Outcome in Lactating Dairy Cattle by : Sandra Frances Larson
Download or read book Evidence that the Timing of the Increase in Progesterone Post-breeding Affects Pregnancy Outcome in Lactating Dairy Cattle written by Sandra Frances Larson and published by . This book was released on 1996 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Environmental Physiology of Livestock by : R. J. Collier
Download or read book Environmental Physiology of Livestock written by R. J. Collier and published by John Wiley & Sons. This book was released on 2012-02-07 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental stress is one of the most significant factors affecting livestock performance and health, and it is only expected to increase with effects of global warming. Environmental Physiology of Livestock brings together the latest research on environmental physiology, summarizing progress in the field and providing directions for future research. Recent developments in estimating heat stress loads are discussed, as well as key studies in metabolism, reproduction, and genetic expressions. Environmental Physiology of Livestock begins with a survey of current heat indexing tools, highlighting recent discoveries in animal physiology, changes in productivity levels, and new technologies available to better estimate stress response. Using this synopsis as a point of orientation, later chapters hone in on major effects of heat stress, including changing metabolic pathways and nutrient requirements, endocrine regulation of acclimation to environmental stress, and reduced reproductive performance. The text concludes with a thorough discussion of environmental effects on gene expressions, providing important insight for future breeding practices. Environmental Physiology of Livestock is a globally contributed volume and a key resource for animal science researchers, geneticists, and breeders.
Book Synopsis The Effects of Supplemental GnRH on Reproductive Performance in Lactating Holstein Dairy Cows During the Summer and Winter by :
Download or read book The Effects of Supplemental GnRH on Reproductive Performance in Lactating Holstein Dairy Cows During the Summer and Winter written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: During the summer trial lactating dairy cows were randomly assigned to four treatment groups. These groups included a control group that received no hormonal supplement, and three groups that received supplemental gonadotropin releasing hormone (GnRH) on either day 5, day 11, or both days 5 and 11 post insemination. The cows during the winter trial were randomly assigned to three treatment groups, a control, and cows receiving hormonal supplements on day 5, or days 5 and 11 post insemination. Blood samples and rectal temperatures were taken 9 and 2 days prior to insemination and every other day there after beginning on day 5 post insemination and ending around day 30. Pregnancy was checked on day 30 and then again between days 45 and 60 by ultrasonography. Daily maximum and minimum temperatures and humidity values were recorded in order to calculate the temperature-humidity index and determine the level of heat stress the cows were experiencing. Serum progesterone (P4) and cortisol concentrations from all samples were analyzed using RIA. Environmental information for the summer indicated that the cows experienced an overall mild heat stress by an average THI of 76, where as the winter environmental data showed an average THI of 43, within the thermo-neutral range. However, on individual days during the summer the THI reached values between 79 and 85, indicating that cows experienced medium heat stress. Serum P4 concentrations were data was analyzed between days 11 through 17 post insemination, the expected luteal phase, during the summer. Treatment groups were compared and indicated that the serum P4 concentration was greater in GnRH-D11 treated cows than control cows (P
Book Synopsis The Effects of Supplemental Progesterone Via a CIDR Insert on Pregnancy Rates in Dairy Heifer Recipients of IVP Embryos by :
Download or read book The Effects of Supplemental Progesterone Via a CIDR Insert on Pregnancy Rates in Dairy Heifer Recipients of IVP Embryos written by and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In previous research, progesterone has been supplemented using various techniques, at differing time points during peri-insemination in cattle, with conflicting results. Little research has been conducted on the effects of intravaginal delivery of supplemental progesterone following transfer of embryos produced in vitro, and no research was found to investigate this method exclusively in the period post-transfer. Pregnancy rates following the transfer of embryos produced in vitro are considered less than ideal, especially if these embryos have been cryopreserved. Embryos produced in vitro are less equipped to handle the freezing process due to alternative ultrastructural differences, and display lesser developmental potential in the post-transfer environment compared to embryos derived in vivo. The objective of this study was to evaluate the effect of a CIDR insert following the transfer of IVP embryos on pregnancy rates and circulating concentrations of progesterone of dairy heifer recipients.
Book Synopsis The Effects of Supplemental Progesterone Via a CIDR Insert on Pregnancy Rates in Dairy Heifer Recipients of IVP Embryos by : Melissa Steichen
Download or read book The Effects of Supplemental Progesterone Via a CIDR Insert on Pregnancy Rates in Dairy Heifer Recipients of IVP Embryos written by Melissa Steichen and published by . This book was released on 2018 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: In previous research, progesterone has been supplemented using various techniques, at differing time points during peri-insemination in cattle, with conflicting results. Little research has been conducted on the effects of intravaginal delivery of supplemental progesterone following transfer of embryos produced in vitro, and no research was found to investigate this method exclusively in the period post-transfer. Pregnancy rates following the transfer of embryos produced in vitro are considered less than ideal, especially if these embryos have been cryopreserved. Embryos produced in vitro are less equipped to handle the freezing process due to alternative ultrastructural differences, and display lesser developmental potential in the post-transfer environment compared to embryos derived in vivo. The objective of this study was to evaluate the effect of a CIDR insert following the transfer of IVP embryos on pregnancy rates and circulating concentrations of progesterone of dairy heifer recipients.
Download or read book Index Medicus written by and published by . This book was released on 2003 with total page 2004 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
Book Synopsis Effect of Post-insemination Supplementation with a Progesterone Releasing Intravaginal Device on Pregnancy in Repeat-breeder Hosltein Cows by : Aurora Villarroel
Download or read book Effect of Post-insemination Supplementation with a Progesterone Releasing Intravaginal Device on Pregnancy in Repeat-breeder Hosltein Cows written by Aurora Villarroel and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Impact of Progesterone Supplementation on Pregnancy Rates Following Timed Artificial Insemination Or Embryo Transfer in Beef Cattle Consuming Endophyte-Infected Tall Fescue by : Joseph Christopher Mackey
Download or read book Impact of Progesterone Supplementation on Pregnancy Rates Following Timed Artificial Insemination Or Embryo Transfer in Beef Cattle Consuming Endophyte-Infected Tall Fescue written by Joseph Christopher Mackey and published by . This book was released on 2016 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reproductive Technologies in Farm Animals by : Ian Gordon
Download or read book Reproductive Technologies in Farm Animals written by Ian Gordon and published by CABI. This book was released on 2004 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past half century great progress has been made in the reproductive management of farm animals, both mammals and birds. This book aims to review developments and indicate which reproductive technologies can be used commercially or in research. It begins by discussing artificial insemination and how this has recently been refined in semen sexing technology. Embryo transfer, in vitro embryo production technology and the control of oestrus and ovulation are then reviewed. Subsequent chapters consider the control of postpartum ovarian activity, seasonal breeding, multiple births and litter size, pregnancy testing, parturition, and the onset of puberty. The author then describes more recent developments in cloning and the production of transgenic animals, before a final chapter on suppressing reproductive activity.
Book Synopsis Heat Stress and Animal Productivity by : Anjali Aggarwal
Download or read book Heat Stress and Animal Productivity written by Anjali Aggarwal and published by Springer Science & Business Media. This book was released on 2012-12-30 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr. Anjali Aggarwal is working as a Senior Scientist at National Dairy Research Institute, Karnal (India). She holds a PhD degree in Animal Physiology and is involved in research and teaching at post-graduate level. Her area of research work is stress and environmental physiology. She has more than 50 publications, two technical bulletins, four manuals and many book chapters to her credit. She has successfully guided many post-graduate and PhD students. Her major research accomplishments are on microclimatic modification for alleviation of heat and cold stress, mist and fan cooling systems for cows and buffaloes, and use of wallowing tank in buffaloes. Her work involves the use of technology of supplementing micronutrients during dry period and early lactation to crossbred and indigenous cows for alleviating metabolic and oxidative stress and improved health and productivity. Studies are also done in her lab on partitioning of heat loss from skin and pulmonary system of cattle and buffaloes as a result of exercise or exposure to heat stress. Dr. R.C. Upadhyay is working as Head, Dairy Cattle Physiology Division at National Dairy Research Institute, Karnal (India). He graduated in Veterinary Sciences and obtained his PhD degree in Animal Physiology. His area of recent research is climate change, stress, and environmental physiology. His major research accomplishment is on climate change impact assessment of milk production and growth in livestock. His work also involves studying methane conversion and emission factors for Indian livestock and use of IPCC methodology of methane inventory of Indian livestock. Heat shock protein-70 expression studies in cattle and buffaloes are also done in his lab. Draught animal power evaluation, fatigue assessment, work-rest cycle and work limiting factors form the highlights of his work. Studies on partitioning of heat loss from skin and pulmonary system of cattle and buffaloes and electrocardiographic studies in cattle, buffalo, sheep and goat are also undertaken in his lab. He has more than 75 research papers, four books and several book chapters to his credit. Technologies developed and research done by him include methodology of methane measurement: open and closed circuit for cattle and buffaloes; inventory of methane emission from livestock using IPCC methodology; livestock stress index: thermal stress measurement based on physiological functions; and draught power evaluation system and large animal treadmill system. He received training in Radio-nuclides in medicine at Australian School of Nuclear Technology, Lucas heights, NSW, Australia in 1985 and Use of radioisotopes in cardiovascular investigations at CSIRO, Prospect, NSW, Australia, during 1985-86. He has guided several post-graduate and PhD students. He is recipient of Hari Om Ashram Award-1990 (ICAR) for outstanding research in animal sciences.
Book Synopsis Environmental Stress and Amelioration in Livestock Production by : Veerasamy Sejian
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.
Book Synopsis Reproduction in Cattle by : Peter J. H. Ball
Download or read book Reproduction in Cattle written by Peter J. H. Ball and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cattle play a fundamental role in animal agriculture throughout the world. They not only provide us with a vital food source, but they also provide us with fertilizer and fuel. Keeping reproduction levels at an optimum level is therefore essential, but this is often a complicated process, especially with modern, high yielding cows. Written in a practical and user-friendly style, this book aims to help the reader understand cattle reproduction by explaining the underlying physiology of the reproductive process and the role and importance of pharmacology and technology, and showing how management techniques can improve reproductive efficiency. This edition includes: Recent research findings on the physiology of the oestrous cycle and its control; New techniques for monitoring and manipulating reproduction, including pregnancy diagnosis and embryo transfer; Advice on identifying common infertility problems and how to prevent and treat them. Reproduction Cattle 3e is essential reading for veterinary and agricultural students, as well as veterinarians and farmers involved in cattle reproduction.
Book Synopsis Climate Change Impact on Livestock: Adaptation and Mitigation by : Veerasamy Sejian
Download or read book Climate Change Impact on Livestock: Adaptation and Mitigation written by Veerasamy Sejian and published by Springer. This book was released on 2015-03-31 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume addresses in detail both livestock’s role in climate change and the impacts of climate change on livestock production and reproduction. Apart from these cardinal principles of climate change and livestock production, this volume also examines the various strategies used to mitigate livestock-related GHG emissions, and those which can reduce the impacts of climate change on livestock production and reproduction. Presenting information and case studies collected and analyzed by professionals working in diversified ecological zones, the book explores the influence of climate change on livestock production across the globe. The most significant feature of this book is that it addresses in detail the different adaptation strategies and identifies targets for different stakeholders in connection with climate change and livestock production. Further, it puts forward development plans that will allow the livestock industries to cope with current climate changes and strategies that will mitigate the effects by 2025. Lastly, it provides researchers and policymakers several researchable priorities to help develop economically viable solutions for livestock production with less GHG emissions, promoting a cleaner environment in which human beings and livestock can live in harmony without adverse effects on productivity. Given that livestock production systems are sensitive to climate change and at the same are themselves a contributor to the phenomenon, climate change has the potential to pose an increasingly formidable challenge to the development of the livestock sector. However, there is a dearth of scientific information on adapting livestock production to the changing climate; as such, well-founded reference material on sustaining livestock production systems under the changing climate scenarios in different agro-ecological zones of the world is essential. By methodically and extensively addressing all aspects of climate change and livestock production, this volume offers a valuable tool for understanding the hidden intricacies of climatic stress and its influence on livestock production.
Book Synopsis Regulation of Implantation and Establishment of Pregnancy in Mammals by : Rodney D. Geisert
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 :National Research Council (U.S.). Committee on Physiological Effects of Environmental Factors on Animals Publisher :National Academies ISBN 13 : Total Pages :390 pages Book Rating :4.1/5 (312 download)
Book Synopsis A Guide to Environmental Research on Animals by : National Research Council (U.S.). Committee on Physiological Effects of Environmental Factors on Animals
Download or read book A Guide to Environmental Research on Animals written by National Research Council (U.S.). Committee on Physiological Effects of Environmental Factors on Animals and published by National Academies. This book was released on 1971-01-01 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioclimatic factors and their measurement. Physiologic functions and measurement techniques. Animal characteristics in relation to environmental response. Environment and physiopathology. Design and execution of experiments using domestic animals. Development of research facilities. Research under field conditions.
