Endocrine Causes of Seasonal and Lactational Anestrus in Farm Animals PDF Download

Author: F. Ellendorff
Publisher: Springer Science & Business Media
ISBN: 9400950268
Category : Medical
Languages : en
Pages : 244

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Author: F. Ellendorff
Publisher: Springer
ISBN: 9789401087261
Category : Medical
Languages : en
Pages : 0

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Author: Richard M. Hopper
Publisher: John Wiley & Sons
ISBN: 1118470850
Category : Medical
Languages : en
Pages : 2206

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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: J.F. Roche
Publisher: Springer Science & Business Media
ISBN: 9780898388558
Category : Medical
Languages : en
Pages : 282

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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; ...

Author: National Library of Medicine (U.S.)
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 1036

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Author: Alexandra Lester-Makin
Publisher: Boydell & Brewer
ISBN: 1837650136
Category : Antiques & Collectibles
Languages : en
Pages : 244

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An examination of the uses, meanings, and social impact of Viking Age textiles. This volume offers the first full study of archaeological fabrics and their decoration found in the North Atlantic region and dating broadly from the Viking or Norse period. With contributions from both academic scholars and practitioners, it shows how approaching early medieval textiles from archaeological, historical and literary contexts, and through the processes of learning and employing the traditional skills of making them, brings about a more nuanced understanding of early medieval cloths: their creation, use and meanings within their respective societies. The book is divided into two parts. The first, "Textiles and their Interpretation", takes the reader on a journey from how wool was processed in the Viking Age, and the conservator's role in preserving and interpreting archaeological textiles, to different types of analyses that researchers use to understand and explain textiles from across the wide area of the Viking-influenced North Atlantic region. The second, "Understanding through Replicating", investigates the results of practical experiments in the reconstruction of surviving medieval fabrics and the resulting empirical conclusions that can be made about their manufacture and wider cultural implications.

Author: M.W. Verstegen
Publisher: Springer Science & Business Media
ISBN: 9400933630
Category : Science
Languages : en
Pages : 511

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Animal production systems have changed dramatically over the last two decades. Knowledge of energy metabolism and environmental physio logy has increased as appears from many textbooks on these disciplines. The contents of the symposia on energy metabolism of farm animals show this and they have initially focussed on feed evaluation and later on com parative aspects of energy metabolism. They show part of the progress being made. Application of knowledge of energy metabolism for animals has a long history since Lavoisier. In addition to this, studies about the environ mental requirements of animals have shown that we are still far from ac curate assessment of these requirements in terms of nutrients and ener gy. I n model studies on energy metabolism researchers have recognized the interaction between the environment and the energy requirements of animals. Estimation of energy requirements has been done in physiolo gical, physical and behavioural studies. The impact of conditions as en countered by animals in various production systems has been approached from different viewpoints related to these different disciplines. In addi tion, various kinds of infections (bacterial, parasitic: subclinical, clini cal) have been evaluated only recently with regard to their effect on pro tein and/or energy metabolism and thus on production. People working in the field of feed evaluation have defined how che mical and physical properties of nutrition infiuence energy to be derived for maintenance and production.

Author: J.M. Sreenan
Publisher: Springer Science & Business Media
ISBN: 9400950381
Category : Medical
Languages : en
Pages : 294

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Reproductive wastage is a major inefficiency in all livestock production with embryonic mortality accounting for a major portion of this loss. Accordingly the Commission of the European Communities encouraged the organisation of a seminar on embryonic mortality in farm animals which was held in Brussels on the 11th and 12th of December 1984. This book contains the text of the papers, discussions and final summary presented at that Seminar. As a background to the Seminar, the extent and timing of embryonic loss was described for farm animals. Particular consideration was then given to the various mechanisms and signals, both embryonic and uterine in origin, that are so far known to be involved in the establishment of pregnancy. Possible causes of embryonic death including physiological, endocrinological, genetic and immunological components were outlined and discussed. The final summary contains general conclusions from the Seminar and recommendations for future research work on this topic. J.M. Sreenan M.G. Diskin July 1985. ******************** THE EXTENT AND TIMING OF EMBRYONIC MORTALITY IN THE COW J. M. Sreenan & M. G. Diskin, The Agricultural Institute, Belclare, Tuam, Galway, Ireland ABSTRACT The extent and timing of embryonic mortality in heifers, normal cows and repeat breeder cows has been reviewed.

Author: P.R. Wiepkema
Publisher: Springer Science & Business Media
ISBN: 9400933398
Category : Medical
Languages : en
Pages : 203

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This book contains the contributions to a workshop on stress in farm animals held on April 17-18,1986 at the Pietersberg Con ference Centre Oosterbeek. The workshop was financed by the Commis sion of the European Communities from its budget for the coordina tion of Community Agricultural Research and the Agricultural Uni versity of Wageningen (The Netherlands). Its aim was to bring together experts from different disciplines all having in common that in one way or another they were involved in stress research. Such a multidisciplinary encounter should not only provide an interesting description of present day knowledge on stress, but also promote a more integrated view on stress phenomena as they occur in higher vertebrates. In the course of this workshop the following fields of research were related to stress: endocrinology, immunology, pathology, neurobiology, ethology and theoretical bio logy. Each of these relationships was introduce& by one speaker presenting a concise state of the art. The same relationship was elaborated by a second speaker implementing the available knowledge as far as possible to the farm animal situation. Therefore in this book each discipline is represented by a duo and introduced by some integrating remarks.

Author: Akke Jitske Akkermans
Publisher: Springer Science & Business Media
ISBN: 9400910576
Category : Medical
Languages : en
Pages : 189

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This publication contains the proceedings of a seminar held in Brussels on November 8-9, 1988. The title of the seminar was "Reducing the costs of disease by improving resistance through genetics". The seminar was held as an activity of the Community Programme for the Coordination of Agricultural Research, 1984-1988. Costs of disease depend on losses caused by morbidity, mortality and production decreases and on the costs of preventive measures including vaccination and medication. Production losses often contribute a major portion to the total costs. To reduce costs of disease preventive measures like vaccination, preventive medication and hygienic procedures are applied. Genetic resistance is an attractive preventive measure because of its consistent nature in the next generations, because it precludes veterinary services and because there are no side-effects. Constraints are the long term investment, relatively slow progress per generation (in combination with production traits) and the considerable lack of knowledge about inheritance of resistance mechanisms in farm animals.