Economical Supporting System Design for Laying Hen Poultry Houses
نویسندگان
چکیده
منابع مشابه
Air Quality and Hen Health Status in Three Types of Commercial Laying Hen Houses
Environmental conditions and bird health are important elements in assessment of animal welfare for laying hen housing systems, but limited information is available comparing different types of systems. Three types of laying hen houses caged high-rise, caged manure-belt, and cage-free floor-raised were monitored for temperature, relative humidity, carbon dioxide, and atmospheric ammonia during ...
متن کاملComparison of Direct vs. Indirect Ventilation Rate Determination for Manure Belt Laying Hen Houses
Direct measurement of ventilation rate in livestock housing can be a formidable task due to uncontrollable variations in fan and system performance as caused by factors such as operation static pressure, fan belt condition, and dust accumulation on shutters and blades. Indirect, CO2-balance method offers a potentially viable, more flexible alternative to estimating ventilation rate. The reliabi...
متن کاملEndotoxin concentration in poultry houses for laying hens kept in cages or in alternative housing systems.
Endotoxins as components of organic dust may have adverse effects on the respiratory health of workers in poultry buildings. The move towards more welfare-friendly housing systems for layers may increase worker exposure to air contaminants due to the use of litter. The endotoxin concentrations in the inhalable fraction of airborne dust (below 100 µm) from cage and alternative system houses (on-...
متن کاملEffects of Dietary Modifications on Laying Hens in High-Rise Houses: Part II—Hen Production Performance
Dietary manipulation can substantially lower ammonia emissions from laying hen manure. However, such dietary changes would be of little value if the changes cause inferior egg production and hen performance. Therefore, the objective of this study was to evaluate the effect of a diet containing EcoCalTM (gypsum and zeolite), which has been shown to lower ammonia emission in laboratory-scale test...
متن کاملLaying Hen Welfare Fact Sheet
among the major stressors in poultry that cause suffering and death of chickens. Beak trimming, removal of 1/3 to 1/2 of the beak, is a routine husbandry procedure practiced in the poultry industry, including laying hens, broiler breeders, turkey and ducks, to prevent those undesirable behaviors. However, beak trimming is a painful procedure. There is a considerable body of morphological, neuro...
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ژورنال
عنوان ژورنال: International Journal of Poultry Science
سال: 2006
ISSN: 1682-8356
DOI: 10.3923/ijps.2006.921.926