Influence Of Housing Systems On Bone Properties Of Laying Hens
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Influence Of Housing Systems On Bone Properties Of Laying Hens
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Author : Prafulla Regmi
language : en
Publisher:
Release Date : 2015
Influence Of Housing Systems On Bone Properties Of Laying Hens written by Prafulla Regmi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Electronic dissertations categories.
Effect Of Housing Environment And Laying Hen Strain On Performance Egg Quality And Bone Properties As Well As Cloacal And Eggshell Microbiology
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Author : Milan Kumar Sharma
language : en
Publisher:
Release Date : 2020
Effect Of Housing Environment And Laying Hen Strain On Performance Egg Quality And Bone Properties As Well As Cloacal And Eggshell Microbiology written by Milan Kumar Sharma 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.
Laying hen welfare is gaining importance in the United States and several states have passed legislation for a welfare-friendly housing environment, which has forced the egg industry to explore alternative housing environments. For this reason, our first objective was to determine the effect of housing environment and laying hen strain on production performance and egg quality. Results showed that production performance of the hens raised in the alternative housing system was similar to the conventional system. The second objective was to compare the eggshell and cloacal microbiology. Our results indicated that the microbial load observed was higher in the alternative system compared to the conventional system. The third objective was to determine the effects of housing environment and laying hen strain on tibia and femur bone properties. The results demonstrated that the alternative system provided better tibia and femur bone characteristics, but it varied among laying hen strains.
The Effect Of Exercise And Housing Practices On Properties Of Bone In Laying Hens
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Author : Warren Armin Meyer
language : en
Publisher:
Release Date : 1970
The Effect Of Exercise And Housing Practices On Properties Of Bone In Laying Hens written by Warren Armin Meyer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Bones categories.
A Framework For Assessing Effects Of The Food System
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2015-06-17
A Framework For Assessing Effects Of The Food System 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 2015-06-17 with Medical categories.
How we produce and consume food has a bigger impact on Americans' well-being than any other human activity. The food industry is the largest sector of our economy; food touches everything from our health to the environment, climate change, economic inequality, and the federal budget. From the earliest developments of agriculture, a major goal has been to attain sufficient foods that provide the energy and the nutrients needed for a healthy, active life. Over time, food production, processing, marketing, and consumption have evolved and become highly complex. The challenges of improving the food system in the 21st century will require systemic approaches that take full account of social, economic, ecological, and evolutionary factors. Policy or business interventions involving a segment of the food system often have consequences beyond the original issue the intervention was meant to address. A Framework for Assessing Effects of the Food System develops an analytical framework for assessing effects associated with the ways in which food is grown, processed, distributed, marketed, retailed, and consumed in the United States. The framework will allow users to recognize effects across the full food system, consider all domains and dimensions of effects, account for systems dynamics and complexities, and choose appropriate methods for analysis. This report provides example applications of the framework based on complex questions that are currently under debate: consumption of a healthy and safe diet, food security, animal welfare, and preserving the environment and its resources. A Framework for Assessing Effects of the Food System describes the U.S. food system and provides a brief history of its evolution into the current system. This report identifies some of the real and potential implications of the current system in terms of its health, environmental, and socioeconomic effects along with a sense for the complexities of the system, potential metrics, and some of the data needs that are required to assess the effects. The overview of the food system and the framework described in this report will be an essential resource for decision makers, researchers, and others to examine the possible impacts of alternative policies or agricultural or food processing practices.
The Influence Of Egg Production Genetic Background Age And Housing System On Keel Bone Damage In Laying Hens
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Author : Beryl Katharina Eusemann
language : en
Publisher:
Release Date : 2020
The Influence Of Egg Production Genetic Background Age And Housing System On Keel Bone Damage In Laying Hens written by Beryl Katharina Eusemann 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.
Instant Insights Ensuring The Welfare Of Laying Hens
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Author : Dr Victoria Sandilands
language : en
Publisher: Burleigh Dodds Science: Instant Insights
Release Date : 2023-07-18
Instant Insights Ensuring The Welfare Of Laying Hens written by Dr Victoria Sandilands and has been published by Burleigh Dodds Science: Instant Insights this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-07-18 with categories.
This collection provides a comprehensive overview of the key welfare issues affecting laying hens, as well as the measures and practices which can be put in place to prevent their occurrence. Chapters review the range of welfare issues affecting laying hens in conventional cages, enriched cages and free range environments.
Welfare Of The Laying Hen
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Author : G. C. Perry
language : en
Publisher: CABI
Release Date : 2004-01-01
Welfare Of The Laying Hen written by G. C. Perry and has been published by CABI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-01-01 with Technology & Engineering categories.
The welfare of egg-producing poultry is a topic of great concern to the poultry industry and to researchers in applied animal behaviour. It is also subject to increased legislation. Issues such as battery cages, space requirements, access to daylight and ''free-range'' eggs have attracted public interest.
The Effects Of Limestone Particle Size On Bone Health And Performance Of Pullets And Hens In Conventional Cage And Alternative Housing Systems
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Author : Pamela Eliana Eusebio Balcazar
language : en
Publisher:
Release Date : 2014
The Effects Of Limestone Particle Size On Bone Health And Performance Of Pullets And Hens In Conventional Cage And Alternative Housing Systems written by Pamela Eliana Eusebio Balcazar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Eggs categories.
One of the major welfare issues in cage-free housing systems is bone fracture. The goal of this research was to improve bone health in layers by building better pullet skeletons and to investigate limestone particle size (LPS) effects on bone health in conventional cages and cage-free housing systems. Study 1 was a preliminary study that compared conventional cages with litter floor pens in terms of performance, bone health, and eggshell quality from 33 to 47 wk of age. Caged hens had higher egg production and eggshell strength, and improved feed efficiency, but lower tibia bone mineral content compared to floor housed hens. Study 2 examined the effects of LPS fed from 7 to 17 wk of age on performance and bone health in conventional cage and aviary systems. The use of a limestone blend of fine and large particles (0.879 mm; LPS-Blend) rather than a fine limestone (0.431 mm; LPS-Fine) increased tibia bone mineral density (BMD) and alleviated incidence of curved keel bones at the end of the pullet phase. Study 3 investigated the subsequent effects of LPS (Study 2) during the layer phase. The LPS-Blend increased eggshell weight and alleviated keel bone indentations in the middle and end of the lay cycle (Study 3). Study 4 examined the effects of LPS fed from 9 to 17 wk of age on pullet and hen performance, bone health, and eggshell quality in deep litter systems. Hens fed LPS-Blend during the pullet phase had greater tibia BMD at onset of egg production and higher overall eggshell strength. Study 5 evaluated the effect of two layer strains on nest and perch use in aviary systems. White Leghorn hens had greater usage of perch and nest and preferred elevated tiers compared to Brown hens. In conclusion, the provision of LPS-Blend rather than LPS-Fine during the pullet phase improved bone mineralization at the onset of egg production and eggshell quality. Although White Leghorn hens had greater usage of resources in aviary systems; they had higher potential risk of bone fractures.
The Effects Of Housing Systems For Laying Hens On Egg Safety And Quality
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Author : Deana R. Jones
language : en
Publisher:
Release Date : 2017
The Effects Of Housing Systems For Laying Hens On Egg Safety And Quality written by Deana R. Jones and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Instant Insights Poultry Housing Systems
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Author : Victoria Sandilands
language : en
Publisher: Burleigh Dodds Science: Instant Insights
Release Date : 2021
Instant Insights Poultry Housing Systems written by Victoria Sandilands and has been published by Burleigh Dodds Science: Instant Insights this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Chickens categories.
This collection features five peer-reviewed literature reviews on poultry housing systems. The first chapter reviews current poultry housing systems and the recent emergence of enriched cages and cage-free systems. It explores the impact of conventional cages on bird health and welfare, looking primarily at bone health. The second chapter examines the impact of different housing systems on the safety and quality of eggs. It reviews how hen housing and flock management can affect indicator populations, foodborne pathogens and chemical contamination. The third chapter considers the relationship between housing conditions and management in the rearing and production of broilers. It reviews the major welfare issues related to the housing of broilers, including feed and water restriction. The fourth chapter discusses current environmental enrichment strategies implemented in poultry production. The chapter details the benefits of these strategies, as well as their role in contributing to more sustainable production models. The final chapter reviews current knowledge on perching behaviour of chickens, as well as the associated risks to bird health and welfare that arise with the use of elevated structures, such as keel bone damage. What is an Instant Insight? An Instant Insight gives you immediate access to key research on a topic, allowing you to get right to the heart of a subject in an instant and empowering you to contribute to sustainable agriculture.