Author: Eurídice Castañeda-Gutiérrez
Publisher:
ISBN:
Category :
Languages : en
Pages : 278

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Author: Leandro Ferreira Greco
Publisher:
ISBN:
Category :
Languages : en
Pages : 270

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Book Description
Demonstrated that feeding a diet containing a ratio of 4 parts of n-6 to 1 part of n-3 FA increased intake and yields of milk and milk components. Diets containing more n-3 FA attenuated the inflammatory response after an intramammary LPS challenge. Finally, chapter 6 documented that feeding more n-3 FA increased the incorporation of these FA into the endometrial tissue, which downregulated mRNA expression of ERS1, OTR, PGFS, PGES, COX2, and attenuated the amplitude of prostaglandin pulses. Collectively, the studies presented in this dissertation provide new insights on the role of dietary FA on dairy cow production, metabolism, and health.

Author: Bernard Jaffe
Publisher: Elsevier
ISBN: 032316126X
Category : Science
Languages : en
Pages : 1071

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Book Description
Methods of Hormone Radioimmunoassay, Second Edition is a compilation of radioimmunoassay techniques for the quantification of hormones. Various kinds of hormones are considered, namely: intracellular messengers; hypothalamic and pineal hormones; pituitary hormones; thyroid and parathyroid hormones; renal hormones; hormones of the gastrointestinal tract; pancreatic hormones; steroid hormones; uterine and placental hormones; vasoactive peptide hormones; and growth factors. The corresponding method of radioimmunoassay for each hormone is described. This book is comprised of 49 chapters and begins with a discussion on the radioimmunoassay of cyclic adenosine-3',5-monophosphate (cAMP) and cyclic guanosine-3,5'-monophosphate (cGMP), together with problems related to measuring both compounds. The reader is then introduced to prostaglandins and prostaglandin metabolites, thyrotropin-releasing hormone, and gonadotropin-releasing hormone. Pituitaty gonadotropins, prolactin, and thyrotropin are also discussed. The remaining chapters deal with hormones of the gastrointestinal tract, pancreatic hormones, steroid hormones, and growth factors. This monograph is intended for both clinicians and investigators interested in methods of hormone radioimmunoassay.

Author: Claudio Fabian Vargas-Rodriguez
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
The ability of nutritional supplements to generate responses in productive animals at different physiological stages, and their interaction with the particular gastrointestinal tract of ruminants have created the necessity to explore effects beyond productivity. Modulation of immune function and inflammatory processes, modifications of nutrient metabolism, and interactions with the ruminal microbial population are effects attributed to supplements that encouraged the formulation of the set of experiments described in this dissertation. The first experiment was designed to test the effects of arachidonic and docosahexaenoic acids supplemented in milk replacer for Holstein calves during the pre-weaning period on the immune system, lipid and glucose metabolism, and growth performance when animals underwent a vaccination protocol. Neither supplemental fatty acid source affected productivity, cytokine production, antibody production, or CD4 and CD8 cell proliferation. A treatment effect on glucose and NEFA plasma concentration was observed. Polyunsaturated fatty acids, mainly DHA, lowered glucose and NEFA levels compared to control; moreover, a dose effect was observed indicating that increasing amounts of PUFA decreased plasma glucose level. The second experiment tested the effects of Co carbonate (CoCarb) and Co glucoheptonate (CoGH) at different concentrations of Co on in vitro fermentation rate, fermentation end-products, and DM and NDF disappearance. Dry matter and NDF disappearance increased with CoGH relative to CoCarb at 1.0 ppm Co or less. CoCarb at> 3.0 ppm appeared to stimulate the biohydrogenation of long-chain fatty acids whereas CoGH had limited effects on this process. Finally, the third study evaluated responses to chromium propionate during peak lactation and interactions between chromium and rumen-protected lysine and methionine. Chromium propionate increased feed intake and tended to increase energy-corrected milk yield. Primiparous cows showed greater responses in feed intake and milk protein yield than multiparous cows. In this study, feeding chromium propionate near peak lactation increased feed intake and tended to increase productivity but no benefits of supplementing rumen-protected lysine and methionine were observed. Overall, nutritional supplements helped to regulate different biological functions in ruminants; their utilization is not always is feasible, but the results of these experiments provide guidance about effectiveness during different physiological situations.

Author: Graham C. Burdge
Publisher: Elsevier
ISBN: 012811231X
Category : Science
Languages : en
Pages : 256

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Book Description
Polyunsaturated Fatty Acid Metabolism explores a number of major roles of PUFA in the body, including its role as a component of cell membranes and how it provides substrates for the synthesis of lipid second messengers. Recent studies are unraveling the effect of interactions between diet and endocrine factors and genetic and epigenetic variation on the regulation of PUFA biosynthesis in animals. Together, these recent findings provide novel insights into the impact of differences in PUFA supply on health. This book captures these findings in a manner that marks the state-of-the-art, placing them in the wider context of PUFA metabolism and nutritional science. Users will find a comprehensive discussion on the topic that presents the contributions of leading researchers who combine their knowledge to create a cohesive academic resource for researchers, those involved in production, and health policymakers. - Provides a comprehensive view of polyunsaturated fatty acid metabolism - Describes underlying metabolism on lipids that include polyunsaturated fatty acids - Includes discussions on recent findings on the genetic and epigenetic regulation of polyunsaturated fatty acid metabolism

Author: National Research Council
Publisher: National Academies Press
ISBN: 0309037956
Category : Medical
Languages : en
Pages : 384

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Book Description
This lively book examines recent trends in animal product consumption and diet; reviews industry efforts, policies, and programs aimed at improving the nutritional attributes of animal products; and offers suggestions for further research. In addition, the volume reviews dietary and health recommendations from major health organizations and notes specific target levels for nutrients.

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

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Book Description
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: Govindarajan Thangavelu
Publisher:
ISBN:
Category : Fatty acids
Languages : en
Pages : 280

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Book Description

Author: Michael I. Gurr
Publisher: John Wiley & Sons
ISBN: 1405172703
Category : Medical
Languages : en
Pages : 339

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Book Description
Since the publication of the first edition of this successful and popular book in 1970, the subject of lipid biochemistry has evolved greatly and this fifth up-to-date and comprehensive edition includes much new and exciting information. Lipid Biochemistry, fifth edition has been largely re-written in a user-friendly way, with chapters containing special interest topic boxes, summary points and lists of suggested reading, further enhancing the accessibility and readability of this excellent text. Contents include abbreviations and definitions used in the study of lipids, routine analytical methods, fatty acid structure and metabolism, dietary lipids and lipids as energy stores, lipid transport, lipids in cellular structures and the metabolism of structural lipids. The book provides a most comprehensive treatment of the subject, making it essential reading for all those working with or studying lipids. Upper level students of biochemistry, biology, clinical subjects, nutrition and food science will find the contents of this book invaluable as a study aid, as will postgraduates specializing in the topics covered in the book. Professionals working in research in academia and industry, including personnel involved in food and nutrition research, new product formulation, special diet formulation (including nutraceuticals and functional foods) and other clinical aspects will find a vast wealth of information within the book's pages. Michael Gurr was a Visiting Professor in Human Nutrition at the University of Reading, UK and at Oxford Brookes University, UK. John Harwood is a Professor of Biochemistry at the School of Biosciences, Cardiff University, UK. Keith Frayn is a Professor of Human Metabolism at the Oxford Centre for Diabetes, Endocrinology and Metabolism, University of Oxford, UK.

Author: William W. Christie
Publisher: Elsevier
ISBN: 1483152723
Category : Technology & Engineering
Languages : en
Pages : 461

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Book Description
Lipid Metabolism in Ruminant Animals is a nine-chapter book that first discusses the anatomy, physiology, and microbiology of the ruminant digestive tract. Subsequent chapters center on lipid metabolism in the rumen; digestion, absorption and transport of lipids in ruminant animals; the composition, structure and function of lipids in the tissues of ruminant animals; and the effects of diet and other factors on the lipid composition of ruminant tissues and milk. Other chapters focus on lipid metabolism in the mammary gland, adipose tissue, liver, and other selected tissues of ruminant animals.