PARTICULATE MATTER CONCENTRATION AND EMISSION FACTOR IN THREE DIFFERENT LAYING HEN HOUSING SYSTEMS
نویسندگان
چکیده
منابع مشابه
Microbiological impact of three commercial laying hen housing systems1
Hen housing for commercial egg production continues to be a societal and regulatory concern. Controlled studies have examined various aspects of egg safety, but a comprehensive assessment of commercial hen housing systems in the US has not been conducted. The current study is part of a holistic, multidisciplinary comparison of the diverse aspects of commercial conventional cage, enriched colony...
متن کاملConcentrations and Size Distributions of Airborne Particulate Matter and Bacteria in an Experimental Aviary Laying-Hen Housing System
High levels of airborne particulate matter (PM) and bacteria may exist in animal housing, which can be detrimental to the health of animals and workers. The sizes of these bioaerosols determine their aerialtransport behaviors and depositions in the respiratory tracts of animals and humans. However, little is known regarding the size distribution of airborne PM and bacteria in livestock houses, ...
متن کاملHen welfare in different housing systems.
Egg production systems have become subject to heightened levels of scrutiny. Multiple factors such as disease, skeletal and foot health, pest and parasite load, behavior, stress, affective states, nutrition, and genetics influence the level of welfare hens experience. Although the need to evaluate the influence of these factors on welfare is recognized, research is still in the early stages. We...
متن کاملAirborne Particulate Matter and Bacteria Reduction from Spraying Slightly Acidic Electrolyzed Water in an Experimental Aviary Laying-Hen Housing System
Compared to conventional cage systems for laying hens, aviary housing systems generally have much higher concentrations of airborne dust and bacteria due to generation of bioaerosols by the hens from their litter access. Hence solutions to reduce these health-degrading agents are required to safeguard the indoor environment in such systems. Spraying slightly acidic electrolyzed water (SAEW) has...
متن کاملHousing system and laying hen strain impacts on egg microbiology.
Alternative hen housing is becoming more commonplace in the egg market. However, a complete understanding of the implications for alternative housing systems on egg safety has not been achieved. The current study examines the impact of housing Hy-Line Brown, Hy-Line Silver Brown, and Barred Plymouth Rock hens in conventional cage, cage-free, and free range egg production systems on shell microb...
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ژورنال
عنوان ژورنال: Journal of Agricultural Engineering
سال: 2009
ISSN: 2239-6268,1974-7071
DOI: 10.4081/jae.2009.3.15