Download or read book Postpartum Reproductive Performance in Dairy Cows Under Different Managemental Systems and in Cows with Induced Parturitions written by Kalle Kask and published by . This book was released on 1999 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Follicular Growth and Ovulation Rate in Farm Animals written by J.F. Roche and published by Springer Science & Business Media. This book was released on 1987-02-28 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hypotheses regarding development of dominant follicles during a bovine estrous cycle; Inhibin and ovarian function; Development of preovulatory follicles in the cow from luteolysis until ovulation; Follicular development in heifers chronically treated with bromocryptine; ...
Download or read book The Effects of Prostaglandin F2 alpha on Reproductive Performance in the Postpartum Dairy Cow and the Mechanism Behind Its Benefits written by Kathryn Genevieve Younger and published by . This book was released on 2016 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the beginning of the postpartum period, 80 to 100% of lactating dairy cows have bacterial contamination within their uteri. Presence of uterine bacteria may contribute to increased number of days open and services per conception within these cows. Expulsion of uterine contamination is crucial for uterine involution and reproductive health. Susceptibility to bacterial infection within the uterus can be attributed to a decrease in neutrophil function during the first two weeks of the postpartum period. Prostaglandin F2[alpha] (PGF2[alpha]) has been found to induce uterine contractility, increase neutrophil propagation and affect the uterine environment. The objective of this study was to determine the effects of a single injection of prostaglandin F2[alpha] (Lutalyse, Pfizer Animal Health, New York, NY) on uterine health and reproductive performance in dairy cows. Holstein cows from a commercial dairy were randomly assigned to receive an intramuscular injection of either Lutalyse or saline on Day 7 or 14 postpartum (Day 0= day of parturition). Services per conception and days open were evaluated to determine the effects on reproductive performance due to treatment. Cytobrush and uterine swabs were performed on a subset of Day 14 postpartum cows at 0 and 24 h after injection to evaluate changes in uterine neutrophil and bacterial populations. The pro-inflammatory cytokines known to induce mobilization of neutrophils, interleukin-1[beta], interleukin-6, and tumor necrosis factor-[alpha] were also measured at 0, 3, 6 and 12 h after injection of Lutalyse or saline on Day 14 postpartum to determine if PGF2[alpha] induced an increase in cytokines similar to initial pathogen detection. No significant differences were seen in days open, services per conception, interleukin-1[beta] or tumor necrosis factor-[alpha] concentrations. Interleukin-6 concentration was greater in saline cows at 12 h compared to Lutalyse treated cows at 3, 6 and 12 h after injection. Additionally, an increase in uterine neutrophils (P=0.05) and a decrease in bacteria (P=0.05) in response to Lutalyse were observed. Although PGF2[alpha] has been shown to have beneficial effects on the postpartum uterus, a single injection protocol may simply not be adequate to induce significant improvement in reproductive performance.
Download or read book Effect of Postpartum Uterine Diseases on Milk Yield Milk Components and Reproduction in Lactating Dairy Cows Under Certified Organic Management written by Juan M. Piñeiro and published by . This book was released on 2016 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the present study was to assess the effect of postpartum uterine diseases on milk yield (kg/day), and milk components (percent fat and protein, and SCC). Lactating cows (n = 3,217) from 2 dairy herds were screened for retained placenta (RP; >24 hours after parturition), metritis (MET) within 20 days in milk (DIM), and clinical endometritis (CE) at 26 ± 3 DIM. Milk yield and components from the DHIA test-days up to 305 DIM and reproductive performance at first service were collected. Weekly, a list of cows was obtained using on-farm computer records screened for RP, MET, and CE. Parity (lactations 1, 2 and =3) of cows was accounted for milk yield, milk components, and reproduction. The statistical analyses were performed using MIXED (milk yield and components), GLIMMIX (risk factors associated with uterine diseases and reproduction), and CORR (correlation of risk factors with uterine diseases) procedures of SAS. Cows diagnosed with MET or CE had a negative effect on milk yield, increased milk fat percentage and SCC, and reduced reproductive performance at first service. Regardless of parity, lactating cows diagnosed with MET and CE had significantly reduced milk yield (by 2 to 3 kg/cow/day) for at least one of the first 4 DHIA tests (P
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.
Download or read book Relationship Between Milk Yield and Post partum Reproductive Performance in Holstein Dairy Cows written by Humphrey Hamudikuwanda and published by . This book was released on 1985 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dairy 2007 Reference of dairy cattle health and management practices in the United States 2007 written by and published by . This book was released on 2007 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book The Postpartum Reproductive Performance of the Icelandic Dairy Cow written by Jón Eldon and published by . This book was released on 1988 with total page 111 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Periparturient Diseases of Dairy Cows written by Burim N. Ametaj and published by Springer. This book was released on 2017-12-21 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarizes the results achieved so far by application of various biological systems (including genomics, transcriptomics, proteomics, and metabolomics) involved in the pathomechanisms and early diagnosis of periparturient diseases as specific biomarkers of disease in cattle. These emerging technologies help to extensively enhance our understanding of the etiology and pathogenesis of periparturient diseases of transition dairy cows. The book includes a chapter dedicated to ‘omics’ sciences and one that discusses the myths established in animal and veterinary sciences in recent decades and emerging, new paradigms. The diseases discussed include metritis, mastitis, laminitis, ketosis, rumen acidosis, periparturient immunosuppression, gastrointestinal microbiota and their involvement in disease, infertility, fatty liver, milk fever, and retained placenta. This book is intended for academics, veterinarians, animal nutritionists, researchers, and graduate students working in the field of ‘omics sciences’ with a special interest in dairy cattle health.
Download or read book The Effects of Induced Parturition on Neonatal Health and Reproductive Performance in Beef Cattle written by Gary William Wilson and published by . This book was released on 1985 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology of the Mammary Gland written by John A. Mol and published by Springer Science & Business Media. This book was released on 2006-04-11 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the European Cooperation in the Field of Scientific and Technical Research (COST 825) Symposium on Mammary Gland Biology, held September 16-18, 1999, in Tours, France. It is difficult to overstate the evolutionary and functional significance of mammary tissue in biology. Substantial progress has been made by researchers in various disciplines, particularly over the last fifteen years, towards realizing the potential of this tissue to yield powerful experimental models for morphogenesis and tissue development; for cellular differentiation; for the biosynthesis and secretion of proteins, lipids, small molecules and inorganic salts; and for the coordination and regulation of these processes. More recently, the possibility of exploiting the secretory epithelial cells of mammary tissue as `cell factories' has become a reality and the recombinant production by lactating animals of an increasing number of proteins, valuable both in the pharmaceutical and `nutraceutical' fields, is in progress or under development. Also in this sphere of agricultural production, genetic as well as nutritional technologies are under investigation and exploitation to optimize milk composition for various end-uses - for instance in food process and manufacture. The possibilities of deriving health benefit from the bioactive properties of some of the minor constituents of milk are emerging to counter the highly-publicized negative health impact of excessive consumption of saturated animal fats. In human nutrition and medicine, the mammary gland is both a source of nutrition to the neonate and a potential health threat to the adult female - breast cancer remains the major single cause of female mortality in most developed countries. This volume provides a unique glimpse into our understanding, at the cutting edge of a variety of disciplines, of this versatile and extraordinary tissue, at the birth of the twenty-first century.
Download or read book Dairy Nutrition An Issue of Veterinary Clinics of North America Food Animal Practice written by Robert J. Van Saun and published by Elsevier Health Sciences. This book was released on 2014-11-05 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr. Robert Van Saun has assembled an expert panel of authors on the topic of dairy nutrition. Articles include: Feed analysis and its interpretation, Management and evaluation of ensiled forages, Feeding, evaluating and controlling the rumen, Control of energy intake and partitioning through lactation, Protein feeding and balancing diets for amino acids, Lipids feeding and milk fat depression, Dietary management of macrominerals in preventing disease, Trace mineral feeding and assessment, Transition cow feeding and management to prevent disease, Monitoring total mixed rations and feed delivery systems, and more!
Download or read book Bovine Medicine written by Peter Cockcroft and published by John Wiley & Sons. This book was released on 2015-04-10 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thoroughly updated to reflect recent changes in the industry, Bovine Medicine, 3rd Edition, offers practicing large animal veterinarians and veterinary students a comprehensive reference to core aspects of contemporary cattle health and husbandry. New edition of a classic text, featuring thoroughly rewritten text, with coverage shifted to the core aspects of everyday cattle practice Includes new focus on both applied skills and application of knowledge, along with many more full-colour illustrations than in previous editions Represents a toolkit of skills that will support the delivery of contemporary cattle practice Presents a seamless integration of information on husbandry, nutrition, and disease Written by a wide range of experts from around the world
Download or read book Animal Agriculture written by Fuller W. Bazer and published by Academic Press. This book was released on 2019-10-25 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: Animal Agriculture: Sustainability, Challenges and Innovations discusses the land-based production of high-quality protein by livestock and poultry and how it plays an important role in improving human nutrition, growth and health. With exponential growth of the global population and marked rises in meat consumption per capita, demands for animal-source protein are expected to increase 72% between 2013 and 2050. This raises concerns about the sustainability and environmental impacts of animal agriculture. An attractive solution to meeting increasing needs for animal products and mitigating undesirable effects of agricultural practices is to enhance the efficiency of animal growth, reproduction, and lactation. Currently, there is no resource that offers specific knowledge of both animal science and technology, including biotechnology for the sustainability of animal agriculture for the expanding global demand of food in the face of diminishing resources. This book fills that gap, giving readers all the necessary information on important issues facing modern animal agriculture, namely its sustainability, challenges and innovative solutions. Integrates new knowledge in animal breeding, biotechnology, nutrition, reproduction and management Addresses the urgent issue of sustainability in modern animal agriculture Provides practical solutions on how to solve the current and future problems that face animal agriculture worldwide
Download or read book Ruminant Physiology written by Pierre Cronjé and published by CABI. This book was released on 2000 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: The International Symposium on Ruminant Physiology (ISRP) is the premier forum for presentation and discussion of advances in knowledge of the physiology of ruminant animals. This book brings together edited versions of the keynote review papers presented at the symposium.
Download or read book Fertility in the High Producing Dairy Cow written by M. G. Diskin and published by . This book was released on 2001 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
