Field Study Of The Effect Of An Anionic Supplement On The Incidence Of Hypocalcemia Clinical Disease Production And Reproduction In Early Lactation In Dairy Herds
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Field Study Of The Effect Of An Anionic Supplement On The Incidence Of Hypocalcemia Clinical Disease Production And Reproduction In Early Lactation In Dairy Herds
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Author : Rita Couto Serrenho
language : en
Publisher:
Release Date : 2020
Field Study Of The Effect Of An Anionic Supplement On The Incidence Of Hypocalcemia Clinical Disease Production And Reproduction In Early Lactation In Dairy Herds written by Rita Couto Serrenho and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
This thesis is an investigation of the effect of a prepartum negative dietary cation-anion difference (DCAD) diet on postpartum health, immune function, production, and reproductive performance, as well as culling risk in dairy herds. The main study was a randomized clinical trial of a negative DCAD diet, including more than 1000 cows from 4 commercial farms. Close-up pens with cows 3 wk before calving were randomly assigned to a negative DCAD (TRT; -108 mEq/kg dry matter [DM]) or a control diet (+105 mEq/kg DM with a placebo supplement). The outcomes include blood Ca concentrations, neutrophil function, postpartum disease, milk production, reproductive performance, and culling. Additionally, the diagnostic accuracy of a point-of-care blood calcium meter was evaluated. We observed a significant reduction in milk fever incidence in over-conditioned multiparous cows fed TRT. In multiparous cows, the prevalence of subclinical hypocalcemia (tCa ≤ 2.14 mmol/L) in the first 2 days in milk (DIM) was lower when fed TRT, with no differences in primiparous cows. Multiparous cows fed TRT were less likely to have more than one disease in the postpartum period, which might have contributed to the tendency of reduced risk of leaving the herd by 30 DIM, and a reduced culling risk over the whole lactation. There was a significant reduction in displaced abomasum and a tendency for lower odds of clinical mastitis within 30 DIM in TRT. Contrary to our hypothesis, peripartum neutrophil killing activity was not enhanced in healthy multiparous cows by feeding TRT. Under commercial conditions, the negative DCAD diet resulted in increased milk yield in early lactation, better reproductive performance, and reduced culling rate in multiparous cows. In primiparous cows, there were no treatment effects on milk production or culling, but treatment was detrimental for pregnancy rate. The meter assessment revealed that when used with fresh plasma, which requires additional sample preparation, the device showed some potential to classify cows as hypocalcemic, but overall its diagnostic accuracy was fair to low. Our results suggest that a negative DCAD diet in the close-up dry period should be targeted to multiparous cows, where we observed health and performance benefits.
Dairy 2007 Reference Of Dairy Cattle Health And Management Practices In The United States 2007
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Author :
language : en
Publisher:
Release Date : 2007
Dairy 2007 Reference Of Dairy Cattle Health And Management Practices In The United States 2007 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Dairy cattle categories.
Feed Management
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Author :
language : en
Publisher:
Release Date : 1992
Feed Management written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Animal nutrition categories.
Calcium Requirements Of Dairy Cattle
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Author : Henry Thomas Converse
language : en
Publisher:
Release Date : 1954
Calcium Requirements Of Dairy Cattle written by Henry Thomas Converse and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1954 with Agriculture categories.
American Journal Of Veterinary Research
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Author :
language : en
Publisher:
Release Date : 2006
American Journal Of Veterinary Research written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Veterinary medicine categories.
Vols. for 1956- include selected papers from the proceedings of the American Veterinary Medical Association.
Feed Efficiency In Swine
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Author : John F. Patience
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-10-15
Feed Efficiency In Swine written by John F. Patience and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-10-15 with Science categories.
'Feed efficiency in swine' has been prepared as a comprehensive treatise on the current state of our understanding of this topic which is so important to the pork industry. Each chapter is written by international authorities who understand both the science and application of their topic area. The book provides detailed insight into the many factors affecting feed efficiency, ranging from diet processing to herd health, from nutrition to physiology and from day-to-day barn management to the adoption of advanced technologies. The authors explain such practical aspects as the challenge of interpreting feed efficiency information obtained on farm or the role of liquid feeding. The authors also delve into more scientific topics such as amino acid or energy metabolism or animal physiology. This book is written for people who have a technical interest in pork production, including nutritionists, geneticists, farm management specialists, veterinarians, other academics and, of course, pork producers.
Calcium Regulating Hormones
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Author : Hirotoshi Morii
language : en
Publisher:
Release Date : 1991
Calcium Regulating Hormones written by Hirotoshi Morii and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Bone and Bones categories.
Nutrient Requirements Of Dairy Cattle
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2001-02-09
Nutrient Requirements Of Dairy Cattle written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-02-09 with Technology & Engineering categories.
This widely used reference has been updated and revamped to reflect the changing face of the dairy industry. New features allow users to pinpoint nutrient requirements more accurately for individual animals. The committee also provides guidance on how nutrient analysis of feed ingredients, insights into nutrient utilization by the animal, and formulation of diets to reduce environmental impacts can be applied to productive management decisions. The book includes a user-friendly computer program on a compact disk, accompanied by extensive context-sensitive "Help" options, to simulate the dynamic state of animals. The committee addresses important issues unique to dairy science-the dry or transition cow, udder edema, milk fever, low-fat milk, calf dehydration, and more. The also volume covers dry matter intake, including how to predict feed intake. It addresses the management of lactating dairy cows, utilization of fat in calf and lactation diets, and calf and heifer replacement nutrition. In addition, the many useful tables include updated nutrient composition for commonly used feedstuffs.
Vitamins In Animal And Human Nutrition
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Author : Lee Russell McDowell
language : en
Publisher: John Wiley & Sons
Release Date : 2008-09-25
Vitamins In Animal And Human Nutrition written by Lee Russell McDowell and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-09-25 with Medical categories.
Vitamins in Animal and Human Nutrition contains concise, up-to-date information on vitamin nutrition for both animals and humans. The author defines these nutrients and describes their fascinating discovery, history and relationship to various diseases and deficiencies. Discussion of vitamins also includes their chemical structure, properties and antagonists; analytical procedures; metabolism; functions; requirements; sources; supplementation and toxicity. Vitamin-like substances, essential fatty acids and vitamin supplementation considerations are also examined. This book will be useful worldwide as a textbook and as an authoritative reference for research and extension specialists, feed manufacturers, teachers, students and others. It provides a well-balanced approach to both animal and clinical human nutrition and compares chemical, metabolic and functional aspects of vitamins and their practical and applied considerations. A unique feature of the book is its description of the implications of vitamin deficiencies and excesses and the conditions that might occur in human and various animal species.
Sheep Goat And Cervid Medicine E Book
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Author : David G. Pugh
language : en
Publisher: Elsevier Health Sciences
Release Date : 2020-01-07
Sheep Goat And Cervid Medicine E Book written by David G. Pugh and has been published by Elsevier Health Sciences this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-07 with Medical categories.
NEW! Coverage of cervids has been added to chapters throughout the book, reflecting the growing popularity of deer and elk. NEW! Thorough content updates are made throughout the book and reflect the latest research evidence. NEW! 170 new clinical photos have been added. NEW! Anesthesia and Pain Management chapter includes a new section on pain management strategies, reflecting the emphasis on controlling pain in small ruminants. NEW! Expert Consult website offers an online version of the book, making it easy to search the entire book electronically. NEW! Two new authors are respected and well-known veterinary medicine experts and educators: Dr. Misty Edmondson and Dr. Thomas Passler.