isoenergetic diets formulated at three levels of dietary protein using 12,24 and 40 % casein and at two levels of fat using 2.26 and 13.82 % corn oil were fed at five levels of intake , ad libitum , 75 , 62.5 , 50 and 37.5 % of average ad libitum intake , to 90 lactating rats from d 7 to 14 of lactation .
C0012177
dietary protein
C0007332
casein