Effects Of Heat Stress And Body Weight On The Performance Health Survival And Physiology Of Holstein Dairy Cattle

Download Effects Of Heat Stress And Body Weight On The Performance Health Survival And Physiology Of Holstein Dairy Cattle full books in PDF, epub, and Kindle. Read online Effects Of Heat Stress And Body Weight On The Performance Health Survival And Physiology Of Holstein Dairy Cattle ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!

Effects of Heat Stress and Body Weight on the Performance, Health, Survival, and Physiology of Holstein Dairy Cattle

Author : Longfei Han
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (133 download)

DOWNLOAD NOW!

Book Synopsis Effects of Heat Stress and Body Weight on the Performance, Health, Survival, and Physiology of Holstein Dairy Cattle by : Longfei Han

Download or read book Effects of Heat Stress and Body Weight on the Performance, Health, Survival, and Physiology of Holstein Dairy Cattle written by Longfei Han and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improving heat-stressed animal health and survival through management, nutrition, and genetics is critical to profitability and sustainability on a dairy farm. The objectives of this dissertation were to estimate genetic parameters of heat tolerance in dairy cattle for the health and survival traits; to investigate the long-term impact of heifer development; and to examine the potential role of ghrelin in thermoregulation during heat stress. Five experiments were conducted and summarized. The first experiment investigated the effect of heifer development (measured as body weight at first calving, BWFC) on milk production and survival. First lactation 305-d milk yield and 24-month milk yield were analyzed with a linear model. Survival analysis was performed to estimate the impact of BWFC on survival. Heifers in the top 60% of body weight at first calving had significantly higher first lactation 305-d milk yield than lighter heifers, but no relationship of BWFC and first lactation 305-d milk yield existed within the top 60%. Relationships between BWFC and 24-month milk yield were not significant. Heifers with higher BWFC lost significantly more body weight in early lactation. While BWFC was a significant predictor of first lactation 305-d milk yield, it accounted for 3% of variation, suggesting that BWFC is not a primary contributor to variation in milk yield. Compared to the lightest heifers, heaviest heifers were 49% more likely to be culled at any given time. These data indicated that, among heifers managed similarly, heavier heifers produced more milk in first lactation than lighter heifers, but lost more BW, faced a higher risk of being culled, and did not produce more milk long-term. The second experiment examined 1), the effect of climatic conditions at birth on organic calf stayability to 365 d of age (STAY) and respiratory disease (RESP) by 365 d of age, and 2), the genetic parameters of organic Holstein calf heat tolerance (HT) for STAY and RESP. HT was defined as the rate of change in STAY and RESP when a calf was born under heat stress. The final dataset included 77,090 calves from 16 USDA certified organic farms and included 35,520 Holsteins for genetic analyses. Phenotypic data were combined with climatic data obtained from local weather stations based on the zip code. Phenotypic analyses were performed with a model that included THI, breed, diurnal THI variation (daily maximum THI -- daily minimum THI; DTV), contemporary group, breed, and genetic effects. Estimated breeding values were calculated for Holstein sires with more than 10 daughters in the dataset. By 365 d of age, 80% of the calves stayed in the herd, and 7% of the calves recorded at least one RESP. Calf STAY decreased and RESP increased when calves were born in THI over 65. The additive genetic HT effect was significant for STAY but not RESP. The heritability for STAY and RESP were 0.100 and 0.025, respectively. In conclusion, calf STAY, RESP, and HT for STAY were heritable in organic herds and can be improved through genetic selection. The third experiment investigated the genetic and environmental effect of heat stress at calving on organic cow health and survival. Health trait were mastitis, reproductive disease, disease during the transition period (TRAN); and stayability to 30 DIM (1 = stayed in the herd, 0 = culled or died by 30 DIM; STAY30). The final dataset included 83,394 lactations from 40,712 cows of 6 different breeds of which Holstein (32,007 lactations, 15,938 cows) were most frequent and were used for genetic analysis. Weather condition at calving was defined as cool (average THI

Heat Stress and Animal Productivity

Author : Anjali Aggarwal
Publisher : Springer Science & Business Media
ISBN 13 : 813220879X
Total Pages : 200 pages
Book Rating : 4.1/5 (322 download)

DOWNLOAD NOW!

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.

Lactation and the Mammary Gland

Author : R. Michael Akers
Publisher : John Wiley & Sons
ISBN 13 : 1119279674
Total Pages : 291 pages
Book Rating : 4.1/5 (192 download)

DOWNLOAD NOW!

Book Synopsis Lactation and the Mammary Gland by : R. Michael Akers

Download or read book Lactation and the Mammary Gland written by R. Michael Akers and published by John Wiley & Sons. This book was released on 2016-02-10 with total page 291 pages. Available in PDF, EPUB and Kindle. Book excerpt: Michael Akers provides the basics for understanding mammary development and lactation and conveys the critical regulatory events in lactation. This text willl prove to be an invaluable overview of mamorary development and lactation for undergraduates and graduates studying lactation, new researchers, and as a review for established scientists. Additionally, the book will be an important resource for professionals in the animal and dairy industry and for those in other scientific disciplines such as food chemistry, cell biology, and endocrinology whose work is closely tied to mammary gland development and function. Lactation and the Mammary Gland covers growth and development of the mammary gland including comparisons between species. It imparts and emphasizes the critical nature of mammary growth and the onset of lactation at the time of parturition. Special emphasis is given to the endocrine and growth factor regulation of both mammogenesis and lactogenesis. A thorough discussion of the role of growth hormone in development and maintenance of lactation or galactopoiesis adds to this book's value as a text and reference. The author reviews the presence of hormones, growth factors, and other bioactive compounds in milk and mammary secretions as well as the potential for use of the mammary gland as a bioreactor in the pharmaceutical industry. A description of the nutritional and management factors in milk production round out the book's comprehensive coverage.

Adaptation of Domestic Animals

Author : Elsayed Saad Eldin Hafez
Publisher :
ISBN 13 :
Total Pages : 458 pages
Book Rating : 4.3/5 (91 download)

DOWNLOAD NOW!

Book Synopsis Adaptation of Domestic Animals by : Elsayed Saad Eldin Hafez

Download or read book Adaptation of Domestic Animals written by Elsayed Saad Eldin Hafez and published by . This book was released on 1968 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ecological and bioclimatological aspects. Basic physiological mechanisms. Adaptation to specific environments. Species-specific adaptations. Techniques of investigations.

The Well-Being of Farm Animals

Author : G. John Benson
Publisher : John Wiley & Sons
ISBN 13 : 0470344784
Total Pages : 392 pages
Book Rating : 4.4/5 (73 download)

DOWNLOAD NOW!

Book Synopsis The Well-Being of Farm Animals by : G. John Benson

Download or read book The Well-Being of Farm Animals written by G. John Benson and published by John Wiley & Sons. This book was released on 2008-06-02 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Well-Being of Farm Animals: Challenges and Solutions is the first title in Blackwell Publishing Professional's groundbreaking series Issues in Animal Bioethics. This important book examines the ethical and economic importance of production animal well-being and pain management—topics of increasing concern to consumers. The Well-Being of Farm Animals: Challenges and Solutions offers veterinarians, veterinary and agriculture students, animal scientists, and food animal producers both practical methods to enhance farm animal well-being, and greater understanding of the theoretical underpinnings of those methods. With a variety of perspectives from respected experts and specialists, this book conveys new research findings and promotes valuable discourse on critical issues. Most importantly, editors Benson and Rollin provide feasible instruction to put theory into practice. The theories and applications presented in this book are likely to be legislated in the future. Therefore, it is important for veterinarians in production animal medicine to keep abreast of the latest issues in promoting animal well-being, and implement sound animal welfare methods every day. The Well-Being of Farm Animals: Challenges and Solutions provides the information veterinarians need to do both.

Effect of Environment on Nutrient Requirements of Domestic Animals

Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309031818
Total Pages : 169 pages
Book Rating : 4.3/5 (9 download)

DOWNLOAD NOW!

Book Synopsis Effect of Environment on Nutrient Requirements of Domestic Animals by : National Research Council

Download or read book Effect of Environment on Nutrient Requirements of Domestic Animals written by National Research Council and published by National Academies Press. This book was released on 1981-02-01 with total page 169 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Milk Quality

Author : F. Harding
Publisher : Springer
ISBN 13 : 1461521955
Total Pages : 178 pages
Book Rating : 4.4/5 (615 download)

DOWNLOAD NOW!

Book Synopsis Milk Quality by : F. Harding

Download or read book Milk Quality written by F. Harding and published by Springer. This book was released on 2013-12-14 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: Milk has played a major contribution to the human diet in many different countries across the world since the dawn of time. The dairy cow was domesticated over 6000 years ago, she was the object of worship in the Middle East 2000 years before Christ, and milk and milk products are mentioned more than 50 times in the Bible. Milk and dairy products have become a major part of the human diet in many countries. It is not surprising therefore, that over many years considerable attention has been paid to improving the quality of milk. We have worked to improve the yield, the compositional quality and the hygienic quality, and have striven to minimise the level of contaminants which can find access to this, perhaps our most natural, unrefined and highly nutritious foodstuff. The chain of people involved in the milk industry extends from milk production-farmers, veterinarians and farm advisors-through transport to processing-quality controllers, manufacturers-and on to retailers, legislators, nutritionists, dairy educators and consumers. All will be interested in the quality parameters of milk which are reg ularly measured for commercial reasons, for trade, for legal requirements and for reasons of nutrition.

Environmental Stress and Amelioration in Livestock Production

Author : Veerasamy Sejian
Publisher : Springer Science & Business Media
ISBN 13 : 3642292054
Total Pages : 577 pages
Book Rating : 4.6/5 (422 download)

DOWNLOAD NOW!

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.

Climate Change Impact on Livestock: Adaptation and Mitigation

Author : Veerasamy Sejian
Publisher : Springer
ISBN 13 : 8132222652
Total Pages : 532 pages
Book Rating : 4.1/5 (322 download)

DOWNLOAD NOW!

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.

Livestock's Long Shadow

Author : Henning Steinfeld
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251055717
Total Pages : 418 pages
Book Rating : 4.0/5 (557 download)

DOWNLOAD NOW!

Book Synopsis Livestock's Long Shadow by : Henning Steinfeld

Download or read book Livestock's Long Shadow written by Henning Steinfeld and published by Food & Agriculture Org.. This book was released on 2006 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The assessment builds on the work of the Livestock, Environment and Development (LEAD) Initiative"--Pref.

A Guide to Environmental Research on Animals

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)

DOWNLOAD NOW!

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.

Tropical Dairy Farming

Author : John Moran
Publisher : Landlinks Press
ISBN 13 : 064309976X
Total Pages : 313 pages
Book Rating : 4.6/5 (43 download)

DOWNLOAD NOW!

Book Synopsis Tropical Dairy Farming by : John Moran

Download or read book Tropical Dairy Farming written by John Moran and published by Landlinks Press. This book was released on 2005-12-08 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tropical Dairy Farming is a manual designed for use by dairy production advisors working in tropical areas, especially in South-East Asia. It aims to increase the productivity of small holder dairy farmers in the humid tropics by improving the feeding management of their livestock. It shows how to provide dairy cows with cost-effective feeds that match small holder farming systems and discusses the major obstacles to improving feeding management in the humid tropics. The author shows the benefits and drawbacks of various feed components and the calculation of balanced diets based mainly on forages combined with some supplementary feeding. Diseases and problems associated with unbalanced diets are also covered, as well as important information on growing and conserving quality forages as silage. The book draws on examples from a variety of countries including Indonesia, Malaysia, Thailand, Vietnam, China, East Timor and the Philippines.

Environmental Physiology of Livestock

Author : R. J. Collier
Publisher : John Wiley & Sons
ISBN 13 : 0813811767
Total Pages : 360 pages
Book Rating : 4.8/5 (138 download)

DOWNLOAD NOW!

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.

Bovine Medicine

Author : Anthony H. Andrews
Publisher : John Wiley & Sons
ISBN 13 : 0470752394
Total Pages : 1233 pages
Book Rating : 4.4/5 (77 download)

DOWNLOAD NOW!

Book Synopsis Bovine Medicine by : Anthony H. Andrews

Download or read book Bovine Medicine written by Anthony H. Andrews and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 1233 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bovine Medicine provides practical and comprehensive information oncattle disease and production and is a key reference for all largeanimal vets. Since the first edition was published in 1991 therehave been significant improvements in disease control andmanagement of cattle. Almost all parts of the book have beenupdated and completely rewritten. There are new chapters onsurgery, embryo transfer, artificial insemination, ethno-veterinarymedicine and biosecurity, and a new consolidating chapter on theinteraction between the animal, environment, management anddisease. The previous edition has sold all over the world, and as aresult of this a greater emphasis has been placed on conditions andtheir treatment in areas other than temperate regions. A newsection entitled "Global Variation in Cattle Practice" has beenincluded with contributors discussing bovine medicine practice intheir part of the world. All in all this is an outstanding resource for any practisingvet and an excellent reference for veterinary students.

Managing Hot Cows in Australia

Author :
Publisher :
ISBN 13 : 9780724266807
Total Pages : 58 pages
Book Rating : 4.2/5 (668 download)

DOWNLOAD NOW!

Book Synopsis Managing Hot Cows in Australia by :

Download or read book Managing Hot Cows in Australia written by and published by . This book was released on 1996 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Biochemistry And Physiology of Nutrition

Author : Geoffrey Bourne
Publisher : Elsevier
ISBN 13 : 0323143881
Total Pages : 654 pages
Book Rating : 4.3/5 (231 download)

DOWNLOAD NOW!

Book Synopsis Biochemistry And Physiology of Nutrition by : Geoffrey Bourne

Download or read book Biochemistry And Physiology of Nutrition written by Geoffrey Bourne and published by Elsevier. This book was released on 2012-12-02 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biochemistry and Physiology of Nutrition, Volume II focuses on the processes, methods, and studies on nutrition. The book starts by discussing intracellular localization through histochemical methods of enzymes and vitamins; the structural changes in vitamin deficiency; and microbiology of digestion. Deficiencies in vitamins, A, C, D, E, B1, riboflavin, nicotinic acid, choline, biotin, and folic acid are noted. The book then focuses on microbiology of digestion, considering the establishment of microbial population in the alimentary tract, results of microbial digestion, antibiotics, and intestinal flora of man. The text also defines the nutrition system of worms, insects, and protozoa. The generation of ATP in terminal respiration and anaerobic glycolysis, as well as ATP's role in energy transfer, is noted. The discussions also focus on hydrolytic and phosphorylitic enzymes, such as carbohydrates, esterases, amidases, phosphatases, and phosporylases. Other topics covered are respiratory enzymes and coenzymes in which nucleotides, glucose diphosphate, diphosphoglyceric acid, and thiamine pyrophosphate are noted. The book notes the functions of iron compounds in the body, particularly in blood and tissues, and then touches on calcium and phosphorus metabolism. Given considerations are calcium and phosphorus in blood, skeletal calcium and phosphorus, and the factors affecting adsorption. A discussion also focuses on trace elements and the effects of protein, carbohydrates, fats, and vitamins in nutrition. The book is a vital source of data for readers interested in studying the elements, factors, processes, and methods involved in nutrition.

Endocrinology of Pregnancy

Author : Fuller W. Bazer
Publisher : Springer Science & Business Media
ISBN 13 : 1461218047
Total Pages : 579 pages
Book Rating : 4.4/5 (612 download)

DOWNLOAD NOW!

Book Synopsis Endocrinology of Pregnancy by : Fuller W. Bazer

Download or read book Endocrinology of Pregnancy written by Fuller W. Bazer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 579 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive, cutting-edge review of the complex interactions between maternal and fetal-placental tissues that control the establishment and maintenance of pregnancy, the proper development of the fetus, the birth process, and the behavioral aspects of bonding between mother and newborn. Expert researchers review the endocrine and physiological events that culminate in the delivery of offspring, and provide a solid base of comparative information on the menstrual cycle of primates, including humans. They also discuss the sources and functions of both steroid and protein hormones from the placenta and the details of their effects on uterine function, placental development, fetal growth and well-being, and maternal responses to pregnancy. This book will become the standard reference source not only for reproductive scientists, but also for those clinicians who want better to understand the complex factors that affect pregnancy-and their pregnant patients.