Šeggs.ab.ca
NUTRITION
Calcium nutrition, bone metabolism, and eggshell quality in longer-persisting layer flocks
D.R. Korver Department of Agricultural, Food and Nutritional Science, University of Alberta
40
Commercial laying hens have been successfully selected for increasing production cycle lengths. Rather than being depopulated at 60 to 70 weeks of age, or being moulted to allow for additional production cycles, the egg industry has moved towards cycle lengths of 80 weeks or even longer. Selection for increased persistency of production and livability, skeletal health, and a slow rate of increase in egg size past peak production has resulted in commercial operations being able to achieve 500 eggs per hen at 100 weeks of age.
- nutrition -
