phd.nawfal

IntroductionControlling production costs and animal welfare are important factors for breeders. Feed accounts for 50 to 70% of the production cost in poultry production (van Horne, 2018). The feed conversion ratio (FCR), which is the ratio of feed consumption to meat or egg production, is an important criterion for the profitability of these farms. It is also an indicator of the environmental impa ...

SummaryThis study was conducted to test the efficacy of phytase in low phosphorus and calcium diets in the late production cycle for maintaining the productivity, eggshell and bone quality of hens fed low phosphorus and calcium.ProblemExogenous phytase supplementation has become a standard practice for poultry diets to liberate available phosphorus and reduce excretion of phosphorus in manure. Man ...

Interest in plastic evaporative cooling pads has been steadily increasing since their introduction approximately ten years ago, especially for producers with water quality issues. Though for the most part six-inch plastic pads are interchangeable with six-inch paper pads, and can produce similar cooling, this doesn’t mean there are not significant differences between plastic and paper pads. ...

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 because plastic pads are capable of producing the s ...

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. Reducin ...

There is a concern amongst many poultry producers that bringing in fresh air on a foggy morning will lead to an increased incidence of litter caking. This is due to belief that the foggy air entering house through side wall inlets contains a large number of small water droplets which will end up being deposited onto the surface of the litter. The concern is great enough that some producers will de ...