| This research explored the influence of combination protease on growth performance and apparent nutrient digestibility
of piglets. A total of 300 28-d-old, three-way cross-breeding weaned piglets, were divided into 5 groups randomly with 6 repeats (each group of 5 males and 5 females per repeat). Divided into control group, single enzyme groupⅠ(acid protease), single enzyme group Ⅱ(neutral Protease) , combinatorial enzyme group Ⅰ and combinatorial enzyme group Ⅱ, the trail period was 28 days. The result indicated that: (1)From 28 to 56 days age, added protease improved piglets production performance, the feed conversion rate of combinatorial enzyme group Ⅰ was reduced by 7.69% (P<0.05) compared with the control group. (2) In the digestive research,additional protease in diets could improve the utilization rate of energy and crude protein, combinatorial enzyme groupⅠ, energy apparent digestion rate was increased by 6.08% and crude protein apparent utilization ratio was increased by 7.53% (P<0.05) compared with the control group. (3)The influence was not significant when added protase for piglets the duodenum and jejunum content amylase and trypsin. This experiment proved that combination protease was better than single protease on promoting growth performance and apparent nutrient digestibility of piglets. |
