experiments demand meticulous 

 aarenfage. 



QUALITY IMPROVEMENT. Skin quality of hormone-fed chickens is ex- 

 amined in a hormone administration experiment. 



chicks produced by injecting eggs 

 1 are called phenocopies because 

 aused by known lethal genes. 



<ed to test pens, they are carefully 



SEXUAL DEVELOPMENT. Gonad tissue is examined under the microscope 

 to study the sexual development of male turkeys. 



VENTILATION STUDIES. The University has recently developed a new 

 ventilation system that provides a uniform and controlled flow of air in 

 animal pens. Here the rate of air movement is checked with a velometer. 



