<;P>;PROBLEM TO BE SOLVED: To provide a vegetable feed material with an excellent feed efficiency, for improving livestock feed problems brought with administration of thick feed, antibiotic, and an antibacterial agent. <;P>;SOLUTION: Livestock feed containing pumpkin seed lees is fed to livestock such as cattle, pig, and chicken so as to increase a milk quantity, and improve a meat quality, an egg-laying rate and a feed efficiency. <;P>;COPYRIGHT: (C)2010,JPO&INPIT