Molecular Genetic Dissection Of Complex Immunocompetence Traits In Broilers
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Molecular Genetic Dissection Of Complex Immunocompetence Traits In Broilers
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Author : United States-Israel Binational Agricultural Research and Development Fund
language : en
Publisher:
Release Date : 2003
Molecular Genetic Dissection Of Complex Immunocompetence Traits In Broilers written by United States-Israel Binational Agricultural Research and Development Fund and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
106 2 Hearings Agriculture Rural Development Food And Drug Administration And Related Agencies Appropriations For 2001 Part 5 March 9 2000
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Author :
language : en
Publisher:
Release Date : 2000
106 2 Hearings Agriculture Rural Development Food And Drug Administration And Related Agencies Appropriations For 2001 Part 5 March 9 2000 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Agriculture Rural Development Food And Drug Administration And Related Agencies Appropriations For 2001 Farm And Foreign Agricultural Services Programs And Food Safety Programs
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Author : United States. Congress. House. Committee on Appropriations. Subcommittee on Agriculture, Rural Development, Food and Drug Administration, and Related Agencies
language : en
Publisher:
Release Date : 2000
Agriculture Rural Development Food And Drug Administration And Related Agencies Appropriations For 2001 Farm And Foreign Agricultural Services Programs And Food Safety Programs written by United States. Congress. House. Committee on Appropriations. Subcommittee on Agriculture, Rural Development, Food and Drug Administration, and Related Agencies and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Avian Immunology
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Author : Fred Davison
language : en
Publisher: Academic Press
Release Date : 2011-04-28
Avian Immunology written by Fred Davison and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-04-28 with Medical categories.
The science underpinning avian immunology is crucial to understanding basic immunological principles and the exceptional features of the avian immune system, as different strategies birds have adopted can provide important evolutionary insights. This book provides the most complete picture of the avian immune system so far. The world-wide importance of poultry protein for the human diet, the threat of an avian influenza pandemic and heavy reliance on vaccination to protect commercial flocks world-wide demonstrates the need to review the important practical lessons in disease control presented here. * With contributions from 33 of the foremost international experts in the field this book provides the most up-to-date and comprehensive review of avian immunology of the field so far * Contains a detailed description of the avian innate immune system reviewing constitutive barriers, chemical and cellular responses; it includes a comprehensive review of avian Toll-like receptors * Contains a wide-ranging review of the ‘Ecoimmunology’ of free-living avian species, assessing the importance of this subject for studying population dynamics and reviewing the methods and resources available for carrying out such research
Poultry Genetics Breeding And Biotechnology
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Author : W.M. Muir
language : en
Publisher: Lulu.com
Release Date : 2003
Poultry Genetics Breeding And Biotechnology written by W.M. Muir and has been published by Lulu.com this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Electronic books categories.
Dissection Of Polygenic Control Of Antibody Response Kinetics In Adult Chickens
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Author : Huaijun Zhou
language : en
Publisher:
Release Date : 2002
Dissection Of Polygenic Control Of Antibody Response Kinetics In Adult Chickens written by Huaijun Zhou and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
The immune system plays an important role in protecting poultry from diseases. Understanding genetic control of immune response can be utilized to improve chicken health. Adult F2 hens were generated by mating highly inbred males of two MHC-congenic Fayoumi lines with G-B1 Leghorn hens. Antibody response after Salmonella enteritidis (SE) vaccination at day 10, and sheep erythrocyte (SRBC) and killed Brucella abortus (BA) immunizations at 19 and 22 weeks were measured. Agglutinating antibody titer at 7 days after primary immunization and mean titer of the final three samples (day 18, 32, and 63 after 2nd immunization) were used as parameters for primary and equilibrium phases, respectively. Secondary phase parameters of minimum (Ymin), maximum titers (Ymax) and time needed to achieve minimum (Tmin) and maximum (Tmax) titers were estimated from seven post-secondary titers using a nonlinear regression model. Both candidate gene and genome scan approaches were used to identify quantitative trait loci (QTL) affecting antibody response to SE vaccination and antibody response kinetics to SRBC and BA. Using the genome scan approach, QTL affecting immune response to SRBC and BA were detected by a stepwise process that culminated in interval mapping. Five significant QTL were detected at the 5% chromosome-wise level on chicken chromosomes 3, 5, 6 and Z, suggesting that regions on chromosomes 3, 5, 6 and Z contain QTL affecting antibody kinetics to SRBC and BA. Single nucleotide polymorphisms (SNP) of 15 immunity related genes were identified. Interferon-[gamma], immunoglobulin light chain, interleukin-2, MHC class I [alpha]1, [alpha]2, class II [beta]1, and transforming growth factor-[beta] 2, 3 and 4 SNP were significantly associated with antibody responses to SE vaccination or antibody response kinetics to SRBC and BA or both. For some candidate genes, significant associations were primarily detected in the lineage of the M5.1 grandsire, but in that of the M15.2 grandsire on the others. Strong interactions of the MHC with candidate genes on antibody response were indicated from the study. All the genes characterized in the present study are, therefore, strong potential candidates for application in marker-assisted selection to improve vaccine response and immunocompetence in chickens.
Marek S Disease
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Author : Kanji Hirai
language : en
Publisher: Springer Science & Business Media
Release Date : 2001
Marek S Disease written by Kanji Hirai 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 2001 with Chickens categories.
Marek's disease virus (MDV) is a herpesvirus which causes a lymphoproliferative disorder of the domestic chicken worldwide. This serious economical problem caused by MDV was mostly solved by development of an effective vaccine against MDV. The development of live vaccines against the disease is remarkable as it has led to the first example of a commercially available vaccine against cancer as well as against diseases caused by herpesviruses.This volume gives an overview on many aspects of MDV research and summarizes recent advances in the field. The topics include the history, biology,and molecular biology of MDV, pathogenesis, vaccinal immunity, immune response, genetic resistance and development of recombinant polyvalent vaccines. It is hoped that this volume will make an important contribution towards the control of infectious diseases.
Avian Immunology
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Author : Karel A. Schat
language : en
Publisher: Academic Press
Release Date : 2012-12-02
Avian Immunology written by Karel A. Schat and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-02 with Medical categories.
The second edition of Avian Immunology provides an up-to-date overview of the current knowledge of avian immunology. From the ontogeny of the avian immune system to practical application in vaccinology, the book encompasses all aspects of innate and adaptive immunity in chickens. In addition, chapters are devoted to the immunology of other commercially important species such as turkeys and ducks, and to ecoimmunology summarizing the knowledge of immune responses in free-living birds often in relation to reproductive success. The book contains a detailed description of the avian innate immune system, encompassing the mucosal, enteric, respiratory and reproductive systems. The diseases and disorders it covers include immunodepressive diseases and immune evasion, autoimmune diseases, and tumors of the immune system. Practical aspects of vaccination are examined as well. Extensive appendices summarize resources for scientists including cell lines, inbred chicken lines, cytokines, chemokines, and monoclonal antibodies. The world-wide importance of poultry protein for the human diet, as well as the threat of avian influenza pandemics like H5N1 and heavy reliance on vaccination to protect commercial flocks makes this book a vital resource. This book provides crucial information not only for poultry health professionals and avian biologists, but also for comparative and veterinary immunologists, graduate students and veterinary students with an interest in avian immunology. With contributions from 33 of the foremost international experts in the field, this book provides the most up-to-date review of avian immunology so far Contains a detailed description of the avian innate immune system reviewing constitutive barriers, chemical and cellular responses; it includes a comprehensive review of avian Toll-like receptors Contains a wide-ranging review of the "ecoimmunology" of free-living avian species, as applied to studies of population dynamics, and reviews methods and resources available for carrying out such research
Intermittent Fasting In Chickens
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Author : Caroline Lindholm
language : en
Publisher: Linköping University Electronic Press
Release Date : 2019-10-16
Intermittent Fasting In Chickens written by Caroline Lindholm and has been published by Linköping University Electronic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-10-16 with categories.
Broiler breeder chickens are the parent stock used to produce broiler chickens raised for human consumption and have long been caught in a welfare dilemma. The immensely successful selection of fast-growing meat-type chickens over the last 80 years has created a remarkably efficient meat-producer and given us access to cheap chicken meat but has also created health problems for the animals. These problems especially affect the breeder generation, which must be raised with strict feed restriction to limit weight gain and thus maintain physical health and normal fertility. At the same time, however, feed restriction causes chronic hunger and feeding frustration with reduced animal welfare as a result. In the EU alone 60 million breeders are affected annually and although the problem is well-known within the industry, there is financial incentive to keep selecting for even higher growth potential in broilers, further increasing the problems for broiler breeders. Many strategies for reducing the impact of growth restriction on breeder welfare have been suggested and are usually aimed at somehow increasing the amount of feed given at feeding times. This can be done either through adding bulky fibers to the diet or by reducing feeding frequency. In this thesis, focus is on the latter as we explore the effects of intermittent fasting (IF) on the welfare of young broiler breeders as well as wild-type Red Junglefowl. Intermittent fasting, or “skip-a-day” feeding, is supposedly the most common feeding strategy for broiler breeders worldwide but is perceived as welfare-reducing and thus illegal in Sweden and several other European countries. In spite of this, the scientific knowledge of how this type of feeding affects chicken welfare is scarce. Assessing the overall effect of IF on breeder welfare is complicated by large variations in both physiological and behavioral parameters between feeding and fasting days, but it does appear that chicken welfare is improved at least on the feeding days of IF regimens. It also seems that some of the health benefits reported from mammalian studies of IF may apply to chickens as well, although behavioral indicators still point to welfare issues unless the level of feed restriction can be relaxed. In comparison with daily feed restriction, IF appears to increase the motivation for feed consumption but to reduce the motivation for appetitive behaviors such as foraging, which may explain why birds fed on this type of schedule are often reported as calmer.
Dare Icar Annual Report
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Author : India. Department of Agricultural Research and Education
language : en
Publisher:
Release Date : 2004
Dare Icar Annual Report written by India. Department of Agricultural Research and Education and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Agricultural education categories.