Download or read book Influence of Maternal Instinct Stimulated by Calf Contact on the Hormonal Induction of Lactation in the Bovine written by Dennis Marc Bel Isle and published by . This book was released on 1975 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experiment was conducted to determine the effect a newborn calf would have on initial success rate, lactation performance, infertility and progesterone levels during mammogenesis and lactogenesis in dairy cows undergoing hormonal inducement to lactate. Fourteen Holstein, Brown Swiss and Jersey infertile, non-lactating cows, loaned by Pacific Northwest dairymen, were examined to exclude anatomical or pathological causes of infertility. These cows were randomly assigned in equal numbers to two groups. The treatments imposed were as follows: a) The control group received 0.1 mg/kg body weight of 17-beta-estradiol and 0.25 mg/kg body weight of progesterone per day for seven days. The hormones were mixed together in absolute ethanol at concentrations of 20 mg/ml estradiol and 50 mg/ml progesterone. One-half of the dose was administered subcutaneously at 0800 hr and onehalf at 2000 hr each day. b) The experimental group received the same hormone treatment; in addition, a newborn male Holstein calf was placed with each cow at the start of the hormone treatment and remained until the cow began milking. Blood was collected from all cows ever other day beginning the day prior to initiation of treatment, until day 20 or when milking began. Serum was analyzed for progesterone content by a dextran charcoal radioimmunoassay. Milk production was monitored for the initial 90 days of induced lactation and for 305 days on six of the total cows. The initial success rate for both groups was 100% based on the criterion of producing in excess of 10 kg milk/day during the first 30 days of milking. The mean day to first secretion was 10.1 days for the control group and 8.9 days for the experimental group. The success rate suggests that immediate calf contact was not an important influence whereas the overall technique used appears to have been a positive influence on increasing the success rate. The technique used included semi-isolation of each cow from the start of the injection series to time of milking and inducement in the calving area of the facility. Serum progesterone levels averaged 1.5 ± 0.3 ng/ml for both groups on the day preceding the injection series. Progesterone concentration increased to an average maximum level of 3 ng/ml during the injection period for both groups and returned to near normal (1-2 ng/ml) when injections stopped on day 7. Based on a split-plot analysis, the treatment had no significant effect on progesterone levels during the 20 day period measured. The daily hormone level, but not the interaction of days with the treatment, showed significant changes among days. Similarly, a correlation of .38 existed between maximum progesterone level and day of first milk secretion. A negative correlation of -.33 was found between maximum progesterone levels and the day of the estrous cycle treatment began. The correlation was .40 between the day of maximum progesterone level and the day of first secretion. The control group cows produced an extended 305 day mean of 4292 957 kg of milk compared to 4731 ± 711 kg of milk for the experimental group. Total milk production (extended from 90 days) when compared to the previous lactation, was 52% for the control group and 63% for the experimental group. Average milk production, when again compared to the last lactation but based on six complete lactations (305 days), was approximately 80% for both groups. There had been no improvement noted in any of the infertility cases studied during the four month treatment period. Each cow that was not disposed of following the experiment was further observed for improvement of her infertility problem. Of the six remaining cows, none were diagnosed as having conceived; the induced lactation had not altered any of the infertility conditions.
Download or read book Agrindex written by and published by . This book was released on 1981 with total page 890 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Animal Welfare Information Center Newsletter written by and published by . This book was released on 1998 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Animal Welfare Information Center Bulletin written by and published by . This book was released on 1998 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hormonal Control of Lactation written by A. T. Cowie and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on the hormonal control oflactation - the subject of this monograph - has long been the major interest of this laboratory. Studies were initiated in the mid 1930s by the late Professor S. 1. Folley, FRS, who directed the work with immense enthusiasm and devotion until his untimely death in 1970. This fruitful area of basic and applied research has, in recent years, attracted widespread attention; there have been many exciting events and developments with a dramatic increase in the number of publications. These events are diverse and include the identification, isolation and sequencing of human prolactin; the identification and isolation of placentallactogens in several ruminant species with recognition of their importance in mammary growth and differentiation; the introduction of highly sensitive bioassay, radioimmuno- and radioreceptor-assay techniques for mammotrophic hormones; the growing clinical appreciation of the immunological and nutritional importance of colostrum and milk to the newborn; the intensification of studies on normal mammogenesis to establish a sound basis for studies on mammary cancer; and the exploitation of the mammary gland, with its characteristic differentiation patterns and multiple synthetic abilities, as a valuable tissue for the investigation of basic mechanisms involved in the synthesis under hormonal control of enzymes and secretory proteins; and for the study of hormone - receptor interactions.
Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1981 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Mammals Ashore written by Joseph R. Geraci and published by National Aquarium in Baltimore. This book was released on 2005 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive manual for understanding and carrying out marine mammal rescue activities for stranded seals, manatees, dolphins, whales, or sea otters.
Download or read book Guidelines for Uniform Beef Improvement Programs written by Dixon D. Hubbard and published by . This book was released on 1981 with total page 84 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 Reproductive Technologies in Farm Animals 2nd Edition written by Ian Gordon and published by CABI. This book was released on 2017-06-23 with total page 353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building on the successful structure of the first edition, the second edition of Reproductive Technologies in Farm Animals has been totally updated and revised to provide an up to date account of the key techniques employed in manipulating reproduction in farm animals, including beef and dairy cattle, pigs, sheep, goats, buffaloes, camelids, horses and poultry. A classic introductory text to the subject, the book is based on a comprehensive review of the current literature. This text remains key reading for students in animal science, agriculture, veterinary medicine and biology, and veterinary practitioners and farmers who wish to keep updated on developments in techniques that may be useful in their daily practice.
Download or read book Neurobiology of Chemical Communication written by Carla Mucignat-Caretta and published by CRC Press. This book was released on 2014-02-14 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt: Intraspecific communication involves the activation of chemoreceptors and subsequent activation of different central areas that coordinate the responses of the entire organism—ranging from behavioral modification to modulation of hormones release. Animals emit intraspecific chemical signals, often referred to as pheromones, to advertise their presence to members of the same species and to regulate interactions aimed at establishing and regulating social and reproductive bonds. In the last two decades, scientists have developed a greater understanding of the neural processing of these chemical signals. Neurobiology of Chemical Communication explores the role of the chemical senses in mediating intraspecific communication. Providing an up-to-date outline of the most recent advances in the field, it presents data from laboratory and wild species, ranging from invertebrates to vertebrates, from insects to humans. The book examines the structure, anatomy, electrophysiology, and molecular biology of pheromones. It discusses how chemical signals work on different mammalian and non-mammalian species and includes chapters on insects, Drosophila, honey bees, amphibians, mice, tigers, and cattle. It also explores the controversial topic of human pheromones. An essential reference for students and researchers in the field of pheromones, this is also an ideal resource for those working on behavioral phenotyping of animal models and persons interested in the biology/ecology of wild and domestic species.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1979 with total page 1378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sheep Goat and Cervid Medicine E Book written by David G. Pugh and published by Elsevier Health Sciences. This book was released on 2020-01-07 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Sheep Veterinary Practice written by Kym A Abbott and published by . This book was released on 2024-06-28 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition thoroughly revises and expands on the previous text, adding a review of the systems and strategies available to improve the welfare of sheep in extensive farming systems, a chapter on pain relief, analgesia and anaesthesia for sheep, and a chapter on metacestodes.
Download or read book Vitamins in Animal and Human Nutrition written by Lee Russell McDowell and published by John Wiley & Sons. This book was released on 2008-09-25 with total page 793 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Goat Medicine and Surgery written by David Harwood and published by CRC Press. This book was released on 2018-03-20 with total page 871 pages. Available in PDF, EPUB and Kindle. Book excerpt: As textbooks go, this is one of the few that I may actually choose to read in a spare moment, not just when madly researching what could possibly be the problem when I get called to a goat farm. It contains interesting information on the background of goat farming, goat behaviour, nutrition and husbandry in the introductory section... This hardback, logically presented book will live on a handy shelf to be used on a regular basis. - Pam Brown, mixed practice vet at Alnorthumbria Vets, Wooler, in Veterinary Record, 27 April 2019 Key features: Covers both goat medicine and surgery Covers basic anatomy, commons breeds and husbandry Includes new and emerging diseases Goats are one of the most widely kept domestic animals globally, mainly as a result of the relative ease with which they can be kept and the obvious benefits provided to those who keep them. Goat Medicine and Surgery describes the key diseases that can have an impact on goat health and welfare worldwide, providing information on diagnosis, treatment, prognosis, management and control. Covers basic anatomy, common breeds and husbandry. Divided into chapters covering each body system Offers the common differential diagnoses, followed by the specific diagnosis and recommended treatments Covers a wide range of disorders, including new and emerging diseases Modern goat keeping gives us a full spectrum of activity from nomadic tribes moving with their animals, to the range-keeping in Australia, to units fattening goat kids for meat and to intensive goat dairy production systems. Alongside these production systems are those in which goats are kept in small numbers as a hobby, as pets and at public attractions. This book deals with the diseases and challenges impacting all kinds of goats and their owners. It will be invaluable to veterinarians in practice and training, animal scientists and agricultural advisors, as well as scientists interested in animal welfare.
Download or read book Zoo Animal Learning and Training written by Vicky A. Melfi and published by John Wiley & Sons. This book was released on 2020-03-09 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensively explains animal learning theories and current best practices in animal training within zoos This accessible, up-to-date book on animal training in a zoo/aquaria context provides a unified approach to zoo animal learning, bringing together the art and science of animal training. Written by experts in academia and working zoos, it incorporates the latest information from the scientific community along with current best practice, demystifying the complexities of training zoo animals. In doing so, it teaches readers how to effectively train animals and to fully understand the consequences of their actions. Zoo Animal Learning and Training starts with an overview of animal learning theory. It describes the main categories of animal learning styles; considers the diverse natural history of zoo animals; reviews the research undertaken which demonstrates ultimate benefits of learning; and highlights the advantages and disadvantages of the different approaches. It also shows how the direct application of learning theory can be integrated into zoo animal management; discusses how other factors might affect development; and investigates situations and activities from which animals learn. It also explores the theoretical basis that determines whether enrichments are successful. Provides an easily accessibly, jargon-free introduction to the subject Explores different training styles, providing theoretical background to animal learning theory as well as considerations for practical training programme – including how to set them up, manage people and animals within them and their consequences Includes effective skills and ‘rules of thumb’ from professional animal trainers Offers commentary on the ethical and welfare implications of training in zoos Features contributions from global experts in academia and the zoo profession Uniquely features both academic and professional perspectives Zoo Animal Learning and Training is an important book for students, academics and professionals. Suited to senior undergraduate students in zoo biology, veterinary science, and psychology, and for post-graduate students in animal management, behaviour and conservation, as well as zoo biology. It is also beneficial to those working professionally in zoos and aquaria at different levels.
