Effects of feeding a lower protein diet supplemented with the apple pomace on growth performance, nitrogen excretion and backfat thickness in finishing pigs

摘要

An experiment was conducted to determine the effects of supplementing a reduced crude protein (CP) diet with dried apple pomace on the growth performance, nitrogen excretion and taackfat thickness in finishing pigs. From 80 to 105kg live weight, twelve pigs were allowed ad libitum access to one of three diets: a standard CP diet (CP 13.4 percent), a low CP, amino acid-supplemented diet (low CP diet, CP 11.0 percent) and a low CP, arnino acid-supplemented diet containing 10 percent of dried apple pomace (apple pomace diet, CP 10.6 percent). They were kept in practical group-feeding conditions. Fecal and urinary nitrogen excretions were estimated by a digestibility trial using acid insoluble ash as a marker and by a method based on the Japanese Feeding Standard for Swine (1998), respectively.