@article{MAKHILLRJBS20127511355,
    title = {Effect of Heat Stress (HS) on Production of Hy-Line Layers},
    journal = {Research Journal of Biological Sciences},
    volume = {7},
    number = {5},
    pages = {206-208},
    year = {2012},
    issn = {1815-8846},
    doi = {rjbsci.2012.206.208},
    url = {https://makhillpublications.co/view-article.php?issn=1815-8846&doi=rjbsci.2012.206.208},
    author = {Adel,Amin,Jafar and},
    keywords = {production rate,Heat Stress (HS),hens,Hy-line},
    abstract = {For many years, researchers have been investigating the effect 
  of high environmental temperature on the performance of different poultry species 
  including turkeys, young chickens, broilers, broiler breeders and laying hens 
  and have found that high environmental temperatures have deleterious effects 
  on productive performance. The objective of this study was to assessment of 
  effect of heat stress on production of Hy-line layers. A total of 200 Hy-line 
  hens were selected for this study and divided into the 2 identical groups. Group 
  1 was kept in the environment at temperature 32-36°C and other one was kept 
  in 27°C. Data showed that there is a significant difference among two groups 
  in point of production rate (p<0.01 ). It can be concluded that heat stress 
  has a marked effect on chickens especially layers as shown in present study 
  and must kept in temperature range of 27°C to obtain maximum production 
  rate.}
    }