The five diets differed in their fat sources: 1) control diet (without added fat); 2) animal fat (tallow–lard mix
that had a 3/5 acidity grade) at 1% (AF1); 3) animal fat at 3% (AF3); 4) soyabean oil at 1% (SBO1); and 5) calcium soaps of palm oil fatty acids at 1% (CaSPO1) (MAGNAPAC®, NOREL S.A., Madrid, Spain): saponifying palm oil fatty acids with calcium.