Steven C. Ricke

This book features five peer-reviewed reviews on the environmental impact of poultry production. The first chapter briefly introduces life cycle assessment (LCA) methodology and addresses the particular effects of egg production on four key impact categories: climate change, land use change, acidifying and eutrophying emissions and water footprint. The second chapter reviews the key role of LCA in identifying the sources of environmental impacts in poultry meat production, as well as potential mitigation strategies. The third chapter discusses key emissions resulting from layer production systems, including greenhouse gases, ammonia, particulate matter, odours and volatile organic compounds. It also considers practical solutions for emissions mitigation, from diet and genetics, to manure and litter management. The fourth chapter reviews the major types of waste generated in egg production facilities and discusses the various methods and technologies for treating and managing these waste streams, such as the use of aerobic treatments. The final chapter addresses current poultry processing practices, the consequent production of byproducts, as well as future opportunities to enhance the value of these byproducts as sources of high-value biological compounds and tissues.

This collection features four peer-reviewed literature reviews on antibiotics in poultry production. The first chapter places the use of antibiotics in poultry production in its historical context to understand the benefits that antibiotics have conferred on animal production to date. It considers past, present and future use of antibiotics, focusing on the use of bacteriocins and phytochemicals. The second chapter considers the benefits and repercussions of the use of antibiotics in poultry production. It details the emergence of antibiotic resistance, as well as the potential risks to public health and sustainable farming associated with antibiotic use. The third chapter reviews the identification and use of prebiotics as a control measure against contamination of poultry products. The chapter covers both traditional prebiotic compounds such as fructooligosaccharides, and less conventional sources such as guar gum. The final chapter presents the background and current use of Competitive Exclusion (CE) as a preventative measure against Salmonella infections in poultry, by administration ofcultures of intestinal origin to day-old chickens.

This collection features five peer-reviewed reviews on managing bacterial diseases of poultry. The first chapter provides a brief overview of Campylobacter in poultry production and the routes of transmission from bird to human. It considers current and future challenges in controlling Campylobacter, as well as the control measures implemented to reduce the occurrence of infection in poultry flocks. The second chapter discusses economically-important enteric diseases and disorders of poultry. The chapter highlights the aetiology of these diseases and explores more sustainable alternatives to promote gastrointestinal health, such as plant-derived extracts, organic acids, prebiotics and probiotics. The third chapter provides an overview of best practices to manage disease outbreaks in poultry. It reviews current disease preventative measures, health monitoring procedures, as well as disease investigation techniques. The fourth chapter reviews the emergence and re-emergence of several infectious pathogens in poultry production and the consequent need to improve current biosecurity measures in poultry flocks to ensure optimal animal health and welfare. The final chapter considers the main alternatives to antibiotics in preventing zoonoses and other major pathogens in poultry. The chapter reviews the sector’s use of prebiotics and related compounds, as well as the beneficial effects of their use.

This collection features three peer-reviewed literature reviews on pre- and probiotics in poultry production. The first chapter summarises the safety and efficacy of individual monocultures for prophylactic and/or therapeutic efficacy against Salmonella infections in poultry under both laboratory and field conditions. The chapter also considers the development of novel, cost-effective, feed-stable, direct-fed microbials with potential for widespread utilisation and improved production, delivery and clinical efficacy for animal use. The second chapter discusses the establishment of prebiotics as a series of feed compounds that serve as specific substrates for gastrointestinal tract (GIT) bacteria. The chapter reviews the impact of prebiotics on bird health, GIT function, and prevention of foodborne pathogen GIT colonization. Particular attention is drawn on the impact of prebiotics on the avian intestinal microbiome, cecal microbiome and the avian upper GIT. The final chapter considers current concerns surrounding the application of probiotics in poultry production, primarily due to mixed experiences of their effectiveness and lack of knowledge regarding the scientific basis for their modes of action. In contrast, prebiotics have been readily accepted by the sector. This chapter summarises recent research on the effects of both types of treatment, their possible modes of action, as well as the strengths and limitations of their use.