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Poultry ventilation
Ventilation in a poultry house supplies fresh air that is essential to sustain life. It also helps reduce the extremes of temperature, humidity and air contamination to tolerable limits for confined chickens. Improved ventilation systems have also made possible the high density populations of livestock and poultry in confinement, thus reducing the building cost per unit housed. This is economically important since it reduces production and labour costs. Ventilation air removes excess heat, moisture, dust and odours from the building and, at the same time, dilutes airborne disease organisms. Properly designed winter systems also conserve energy by utilising heat generated by the birds. Providing proper ventilation to poultry is an art but it can be mastered by any determined and willing poultry grower. It is a challenge, however, since poultry houses are different and ventilation requirements change with time of day, season, temperature, humidity, wind, bird age and density.
Dr. Mike Czarick, Senior Public Service Associate at University of Georgia, discusses the principles of keeping birds cold during hot weather during the XXII Latin American Poultry Congress, August 2011....
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Mike Czarick (University of Georgia) explained the advantages of doing this and the costs implications of using improved circulation fans, during IPPE 2019 in Atlanta, USA....
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Brian Fairchild and Connie Mou (University of Georgia) shared their research on adequate levels of humidity and air movement to keep the litter dry, during IPPE 2019 in Atlanta, USA....
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Though paper evaporative cooling pads have been used by poultry producers for decades, plastic pads are a relative new phenomenon. As with any new product, there are a lot of questions. By far the most common question is whether plastic pads can produce the same level of air cooling as traditional paper pads. In short, the answer is yes. But just...
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Figure 1 illustrates the amount of water which will evaporate from properly wetted, 15 cm paper evaporative cooling pad system, as a function of outside temperature and relative humidity. The amount of water evaporated is provided in terms of gallons per minute per 100,000 cmh of operating tunnel fan capacity. For example, if a house had...
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Figure 1 illustrates the incoming air temperature for a properly wetted, six-inch evaporative cooling pad, while Figure 2 illustrates the predicted incoming relative humidity. The...
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The house has been preheated for 36 hours to 92°F. The chicks will be arriving in a few hours and the controller’s six temperature sensors (positioned one foot above the floor) indicate the air temperature is between 91 and 92°F (Figure 2). A thermal image indicates the floor temperature is between 87 and 102°F...
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Does high humidity affect the performance of exhaust fans? Yes, but probably not as much as you think and not in the way you may believe. Most people believe that humid air is heavier than dry air. After all, humid air has more moisture in it and therefore should weigh more than air that contains less moisture. But, in actuality, humid air...
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New generation multi-species bacteria probiotic in poultry - Microsaf®
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INTRODUCTION Brazilian poultry industry is highly relevant for the country economy. In 2016 a total of 13 million tons of broiler meat was produced, and nearly 35% was exported. (ABPA, 2017). Broiler production is carried out in several variations of house design. However, most of the production in the integrated system is done in open-sided houses with lateral polypropylene curtains, and with solar orientation East-West. The inside cooling is a combination of natural and forced...
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INTRODUCTION The Amazon rainforest is an important regulatory mechanism of the tropical atmosphere and its climate variation, performing important functions in the climate equilibrium of several ecosystems and their inhabitants. The region also has unique climate and environment characteristics (Fisch et al., 1998). The development of poultry production in the region thus presents several challenges related to birds’ environmental comfort, depending on the type of...
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Figure 1. Evaporative cooling system with plastic pads. Little has changed when it comes to poultry house evaporative cooling pads over the last 30 years. Yes, there have been some relatively minor changes in things such as...
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Middle East has experienced an excessive temperature this summer and this affected the poultry industry and caused giant losses in farms and hen houses. In our region, as a general rule, the area fro rearing is 10 birds/m2 for broilers, 8 birds/m2, and 5 birds/m2 for broiler breeders. The natural summer temperature in our country is 29-33°C. We can control it with ventilation and cooling but this case is out of control. The results were: In Broilers:...
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During transport, birds experience feed and water deprivation, restriction of movements and a challenging microclimate in the transport crate. All these factors stress the animals, causing oxidative...
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Heavy broilers with high breast meat yield are more susceptible to heat stress. Under high relative humidity, indoor air velocity (AV) becomes critical to offer optimal environmental conditions for growth and health. Four experiments were conducted under southeastern summer conditions to evaluate the effects of AV treatments (High vs. Low) on live performance, cut-up yields, meat quality and welfare parameters such as footpad dermatitis, hock burns, and leg angular deviations incidence of...
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In most regions, summer is around the corner and poultry farmers need to prepare the birds to combat the heat and hence stay productive. Adding a powerful yeast postbiotic can help broilers absorb nutrients more readily and keep cool. When the chicken is healthy and performing at its best, the bird is in a state of physiological equilibrium (homeostasis). When the animal is exposed to stressors, coming from external sources (such as heat stress) or internal sources (such as metabolic...
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Introduction Most of the population in the tropics depend on poultry as their significant source of protein supply. The harsh climate conditions in this region are making it harder to have optimal performance in poultry production. This results in a lesser everyday supply of...
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Bird performs well within a certain range of environmental temperatures. As the temperature gets higher than the range, the bird falls on stress generally called heat stress. Heat stress is the most significant stressors influencing poultry productivity and causing considerable economic losses in the poultry industry. This induces several negative effects on physiological response of bird. Reducing feed consumption, body weight gain, feed efficiency, egg production and immune response are of...
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Something to consider. If we preheated and ventilated a house long enough prior to chick arrival, the need for a litter treatment would be drastically reduced, if not possibly eliminated. Litter treatments are used primarily because the cost of preheating and ventilating a house long enough prior to chick arrival to remove excess moisture...
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Windrowing has become a very popular method of managing litter between flocks. In order to get the most benefit out of windrowing, the litter needs to be relatively damp. How damp? Ideally, the litter moisture content would be between 25 and 35%. At this level of litter moisture, when you grab a handful of litter and squeeze it, it would...
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During cold weather, fuel usage is a major factor in determining broiler a farm’s profitability. As a result,...
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