One experiment was carried out to determine the energy value of feeding fats (refined soybean oil, refined canola oil, refined sunflower oil, poultry fat, fish oil and lard) for broilers. One hundred and sixty eight broilers averaging 22 days old were allotted to a complete randomized design with seven treatments and four replicates of six broilers. The experiment lasted 8 days, with three days for adaptation and five days for excreta collection. The control replaced 20% of basal diet, as-fed basis. The values of apparent metabolizable energy corrected for nitrogen, as-fed basis, were as follows: 9,201 kcal/kg for refined soybean oil, 8,129 kcal/kg for refined canola oil, 9,561 kcal/kg for refined sunflower oil, 8,251 kcal/kg for poultry fat, 8,715 kcal/kg for fish oil, and 8,366 kcal/kg for lard.
digestibility; fat; metabolizable energy; oils
