Decreasing egg weight by energy or protein restriction and energy required for repletion¹

Florida Agricultural Experiment Station Journal Series No. 299.

Abstract

1. A diet containing 110 g crude protein/kg caused smaller losses in egg weight, numbers and body weight in Babcock B300 layers than diets containing 90 g protein/kg, 6.56 MJ ME/kg or 7.90 MJ/kg.

2. The sequence of repletion of depleted birds was body weight, egg weight and egg number. For the first alone more than 420 kJ/d was required, for body weight and egg weight more than 630 kJ/d and for all three more than 1170 kJ/d.

Notes

Florida Agricultural Experiment Station Journal Series No. 299.

Permanent address: University of Ibadan, Ibadan, Nigeria.