动物营养学报2016，Vol.28Issue(10)：3284-3291,8.DOI:10.3969/j.issn.1006-267x.2016.10.032
丝兰提取物对肉仔鸡消化代谢功能的影响
Effects of Yucca schidigera Extract on Digestive and Metabolic Functions of Broilers
苏俊玲 1史彬林 1岳远西 1楚维斌 1曹振兴 1孙登生 1闫素梅1
作者信息
- 1. 内蒙古农业大学动物科学学院，呼和浩特 010018
- 折叠
摘要
Abstract
Effects of dietary different level of Yucca schidigera extract ( YSE) on small intestinal mucosal mor-phology, activities of chymous digestive enzymes and apparent metabolic rates of nutrients of broilers were studied to provide a theoretical basis for determining YSE appropriate dosage in broiler diets. One hundred and twenty-eight one-day-old Arbor Acres ( AA) broilers were randomly assigned to 4 groups with 4 replicates per group and 8 chicks per replicate after 14 days pre-feeding period with basal diets. The supplemental levels of YSE in diets were 0 ( control group) , 100, 200, and 300 mg/kg, respectively. The experimental period lasted for 28 days. At 28 and 42 days of age, two birds in each replicate were selected randomly and slaughtered, and the front parts of duodenum, jejunum and ileum were removed in order to observe small intestinal mucosal morphology, and small intestinal chyme was collected for analyzing the activities of digestive enzymes. At 35 days of age, one bird in each replicate was selected for metabolic experiment. The results showed as follows:compared with the control group, 1) diet added 100 mg/kg YSE significantly increased jejunum villus height ( VH) of broilers at 28 days of age and duodenum VH and villus height/crypt depth ( V/C) at 42 days of age ( P<0.05) . 2) Diet added 200 mg/kg YSE significantly increased the activities of trypsin ( TRY) and lipase ( LPS) in ileum chyme and LPS in duodenum chyme of broilers at 42 days of age ( P<0.05) . 3) Diet added 200 mg/kg YSE significantly increased the apparent metabolic rates of dry matter ( DM ) and crude protein (CP) of broilers (P<0.05), but diet added 300 mg/kg YSE significantly decreased CP apparent metabolic rate ( P<0.05) . What’ s more, the apparent metabolic rates of calcium ( Ca) and phosphorus ( P) in 100 and 200 mg/kg YSE groups showed an increasing trend but those in 300 mg/kg YSE group showed a decreasing trend (0.05≤P<0.10). In conclusion, the appropriate dosage of YSE in broiler diets is 100 to 200 mg/kg based on the digestive and metabolic functions.关键词
丝兰提取物/肉仔鸡/消化/代谢Key words
Yucca schidigera extract/broilers/digestion/metabolism分类
农业科技引用本文复制引用
苏俊玲,史彬林,岳远西,楚维斌,曹振兴,孙登生,闫素梅..丝兰提取物对肉仔鸡消化代谢功能的影响[J].动物营养学报,2016,28(10):3284-3291,8.
