Composite samples of feed offer, refusal and feces
were thawed to room temperature, mixed thoroughly and
oven dried at 60 °C overnight. The dried samples of feeds and
feces were ground through 1 mm sieve and stored in airtight
polyethylene containers until analyzed. Nutrient digestibility
(%) was calculated as a difference between nutrient intake
and nutrient voided in the feces divided by nutrient intake
and the quotient multiplied by 100.