厚朴提取物对育肥猪 生产性能及经济效益的影响.

The experiment was to study the effect of Houpoea officinalis extract on production performance and economic benefits of finishing pigs. A total of 96 healthy crossbred finishing pigs weighing 51 kg were randomly divided into four groups, with three replicates in each group and eight pigs in each replicate. The pigs in control group were fed with basic diet, and the pigs in each test group were fed with basic diet supplemented with 0.015%, 0.030%, 0.045% Houpoea officinalis extract. The test period was 60 d. The results showed that compared with control group, the final weight, average daily gain and average daily feed intake of pigs in group 2 and group 3 were extremely increased (P<0.01), and the feed to gain ratio was extremely decreased (P<0.01). Compared with control group, the activity of SOD, GSH-Px and T-AOC in serum of pigs in group 2 and group 3 were extremely increased (P<0.01), the content of MDA was extremely decreased (P<0.01), CAT activity in group 3 was extremely increased (P<0.01), MDA content in group 1 was significantly decreased (P<0.05), CAT activity in group 2 was significantly increased (P<0.05). Compared with control group, the content of TC, TG and HDL-C in serum of pigs in group 2 and group 3 were extremely decreased (P<0.01), the content of serum BUN of pigs in group 3 was extremely decreased (P<0.01). Compared with control group, the pig serum IgA content in group 2 and group 3 were extremely increased (P<0.01), the serum IgG content of pigs in group 3 was significantly increased (P<0.05). Compared with control group, the content of IL-6 in serum of pigs in group 3 was extremely decreased (P<0.01), and that in group 2 was significantly reduced (P<0.05). Compared with control group, the backfat thickness of group 3 was significantly reduced (P<0.05), and the eye muscle area was extremely increased (P<0.01), the area of eye muscle in group 2 was significantly increased (P<0.05), the meat color score of group 2 and group 3 were extremely increased (P<0.01), the pH45 min value and marble grain of group 3 was extremely increased (P<0.01), while the dripping loss and water content was extremely decreased (P<0.01). Compared with control group, the economic benefits of each adding group were increased by 10.52%, 23.10% and 24.97%, respectively. The study indicates that the addition of Houpoea officinalis extract in diet can effectively improve the growth performance antioxidant capacity, lipid metabolism, slaughter performance and meat quality of finishing pigs, and obtain higher economic benefits. The appropriate addition amount of Houpoea officinalis extract is 0.030%. [ABSTRACT FROM AUTHOR]