phd.nawfal

Managing by the “average” of anything can be a potentially dangerous concept when it comes to growing birds. For instance, when tunnel ventilating market-age broilers the average house temperature could be 80°F, which isn’t necessarily a problem, but it hides the fact that it could be 70°F at the pad end and 90°F at the fan end of the house which definitely would be d ...

Compilation of a projectKEY INFORMATIONA series of 5 commercial feeding trials was performed from which 4 trials took place on commercial broiler farms growing between 300,000 and 420,000 broilers per cycle.Dietary protein was gradually reduced in subsequent trial while standard diets well represented German broiler feed. Basically, average crude protein levels were decreased by 0.3 % up to 1.5 %. ...

A house tightness test is conducted on a 40' X 500' broiler house using a 54" tunnel fan that moves 25,900 cfm @ 0.10". With everything closed, the 54" fan generates a static pressure of 0.20", which would be considered a relatively tight house by most. Using the Poultry411 Poultry House Leakage Area Calculator, it was determined that the house had a total of approximately 12 ft2 of cracks ...

As discussed in Part 1 of "Balancing Poultry House Moisture Levels," one of the primary objectives of a minimum ventilation system during cold weather is to manage house moisture levels. If we get rid of too much moisture, a house will become dry and dusty, which can lead to respiratory issues. Conversely, if we don't get rid of enough moisture, our litter will become wet and cake ov ...

When it comes to setting minimum ventilation fan runtimes during cold weather it is important to keep in mind that one of the primary objectives of minimum ventilation is to manage house moisture levels. Too much fan runtime will not only result in excessive moisture removal from a house, leading to dry, dusty conditions which can lead to bird respiratory issues, but it will also result in high he ...

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 form a very tight ball. Most research has found a litter moi ...

The use of enzymes in animal feed was first reported in 1925 (Hervey 1925) but the chemistry of target feed substrate has been understood during the last two decades only. The field of biotechnology has introduced various advancements in enzyme production technology specifically in fermentation and microbiological processes resulting in production of enzymes in affordable range to be used for comm ...

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 weighs less than dry air. This is because moist air contai ...