CAJ | 학술논문

以北京鸭为对象，研究了包膜丁酸钠对肠道黏膜形态和消化酶活性的影响。选用1日龄北京鸭240只，分别饲喂：基础日粮；基础日粮＋500 g· t-1包膜丁酸钠；基础日粮＋1000 g· t-1包膜丁酸钠；基础日粮＋40 g· t-1杆菌肽锌。分别在鸭21日龄和42日龄，每个重复分别取2只鸭的十二指肠、空肠和回肠制作石蜡切片，测量绒毛长度和隐窝深度，计算绒隐比（ V/C），并对各组肉鸭十二指肠内容物中的消化酶活性进行测定。结果表明：与对照组和抗生素组相比，添加包膜丁酸钠对肉鸭十二指肠绒毛长度和隐窝深度改善效果明显，1000 g· t-1包膜丁酸钠添加组显著增加了空肠的绒毛长度、降低了隐窝深度（P＜0.05），1000 g· t-1包膜丁酸钠添加组对肠道黏膜形态的改善作用优于500 g· t-1添加组。同时包膜丁酸钠显著提高了十二指肠中脂肪酶的活性（ P＜0.05）。日粮中添加包膜丁酸钠能有效改善肉鸭肠道黏膜的形态，提高脂肪酶活性，促进肉鸭肠道健康。
이북경압위대상，연구료포막정산납대장도점막형태화소화매활성적영향。선용1일령북경압240지，분별사위：기출일량；기출일량＋500 g· t-1포막정산납；기출일량＋1000 g· t-1포막정산납；기출일량＋40 g· t-1간균태자。분별재압21일령화42일령，매개중복분별취2지압적십이지장、공장화회장제작석사절편，측량융모장도화은와심도，계산융은비（ V/C），병대각조육압십이지장내용물중적소화매활성진행측정。결과표명：여대조조화항생소조상비，첨가포막정산납대육압십이지장융모장도화은와심도개선효과명현，1000 g· t-1포막정산납첨가조현저증가료공장적융모장도、강저료은와심도（P＜0.05），1000 g· t-1포막정산납첨가조대장도점막형태적개선작용우우500 g· t-1첨가조。동시포막정산납현저제고료십이지장중지방매적활성（ P＜0.05）。일량중첨가포막정산납능유효개선육압장도점막적형태，제고지방매활성，촉진육압장도건강。
The effect of coated sodium butyrate ( CSB ) on intestinal mucosa morphology and digestive enzyme activities in Beijing duck were evaluated in this study .Two hundred and forty one-day-old Beijing ducks were randomly divided into four groups with four replicates .The dietary treatments were as follows:basal diet, basal+500 g· t-1 CSB, basal+1 000 g· t-1 CSB and basal+40 g· t-1 zinc bacitracin.On the day 21 and day 42, two ducks of each replicate were selected and villous lengths and crypt depths of duodenum , jejunum and ileum were measured , based on which V/C ratio were calculated .Meanwhile , digestive enzyme activities in the duodenum contents were measured.It showed that addition of CSB could obviously improve the villous length and crypt depth of duodenal compared with control and antibiotic group;addition of 1 000 g· t-1 CSB could increase the height of jejunal villous and decrease the depth of crypt significantly ( P<0.05 ) , the intestinal mucosa morphology of 1 000 g· t-1 group was better than that of 500 g· t-1 group.At the same time, CSB could improve activity of lipase in the duodenum (P<0.05 ) .In conclusion , CSB in dietary could effectively improve the intestinal mucosa morphology , increase lipase activity and enhance intestinal health in Beijing duck .