Effects of Complex Enzyme Preparation on Growth Performance, Apparent Digestibility of Nutrients, Serum Antioxidant Indexes and Endogenous Digestive Enzyme Activities of Weaned Piglets
SHI Linxin, QIAO Pengfei, LONG Shenfei, LU Wenqing
State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
Abstract：This experiment was conducted to evaluate the effects of complex enzyme preparation on growth performance, apparent digestibility of nutrients, serum antioxidant indexes and endogenous digestive enzyme activities of weaned piglets. Eighty-four 28-day-old weaned piglets (Duroc×Landrace×Yorkshire) with an initial body weight of (7.22±0.22) kg were randomly allocated to one of two groups in a randomized complete block design. Each group contained 7 replicates and each replicate contained 6 piglets (3 males and 3 females). Piglets in control group were fed a corn-soybean meal basal diet, and piglets in complex enzyme group were fed an experimental diet which supplemented with 1 000 mg/kg complex enzyme preparation (containing 4 000 U/g cellulase, 1 500 U/g α-amylase, 150 U/g β-glucanase and 3 000 U/g neutral protease) based on the basal diet. The trail period was 35 d, which was divided into two phases:early period (1 to 14 d) and later period (15 to 35 d). The results showed that compared with the control group, dietary supplemented with compound enzyme preparation could significantly decrease the feed/gain (F/G) of overall period (P<0.05) and the F/G in early (P=0.09) and later periods (P=0.05) both had the potential to be decreased; the apparent digestibility of neutral detergent fiber (NDF), acid detergent fiber (ADF) and ether extract (EE) in early and later periods of complex enzyme group was significantly increased (P<0.05 or P<0.01), and there was a tendency to increase the apparent digestibility of organic matter (OM) (P=0.07), crude protein (CP) (P=0.09) and gross energy (GE) (P=0.08) in early stage and the apparent digestibility of CP (P=0.07) and GE (P=0.09) in later stage in complex enzyme group. Compared with the control group, dietary supplemented with compound enzyme preparation significantly increased serum total antioxidant capacity (T-AOC) and total superoxide dismutase (T-SOD) activity (P<0.05 or P<0.01), significantly decreased serum malondialdehyde (MDA) content (P<0.05), and tended to increase serum glutathione peroxidase (GSH-Px) activity (P=0.06) on day 14; dietary supplemented with compound enzyme preparation significantly increased the serum GSH-Px activity (P<0.05), and had no significant effects on the other serum antioxidant indices on day 35 (P>0.05). In addition, compared with the control group, dietary supplemented with compound enzyme preparation significantly enhanced the activities of sucrase in both jejunal and ileal mucosa, lactase in ileal mucosa and pancrelipase in pancreas (P<0.05), and there was a tendency to increase the maltase activity in jejunal mucosa in complex enzyme group (P=0.07). In conclusion, dietary supplemented with 1 000 mg/kg complex enzyme preparation has the potential to improve physiological health and growth performance of weaned piglets by increasing the digestibility of nutrients and the activities of endogenous digestive enzymes and enhancing the serum antioxidant capacity.
史林鑫, 乔鹏飞, 龙沈飞, 陆文清. 复合酶制剂对断奶仔猪生长性能、营养物质表观消化率、血清抗氧化指标及内源消化酶活性的影响[J]. 动物营养学报, 2019, 31(8): 3872-3881.
SHI Linxin, QIAO Pengfei, LONG Shenfei, LU Wenqing. Effects of Complex Enzyme Preparation on Growth Performance, Apparent Digestibility of Nutrients, Serum Antioxidant Indexes and Endogenous Digestive Enzyme Activities of Weaned Piglets. Chinese Journal of Animal Nutrition, 2019, 31(8): 3872-3881.
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