Aju Tjatur Nugroho krisnaningsih,Dimas Pratidina Puriastuti, Septika Irjawati. “INFLUENCE COMBINATION OF SOAKING DURATION PINEAPPLE AND PAPAYA EXTRACT DIFFERENT ON PROTEIN AND FAT MEAT OF LAYING POST PRODUCTION DUCKS”. Jurnal Sains Peternakan, vol. 4, no. 1, Dec. 2017, doi:10.21067/jsp.v4i1.2097.