饲料工业2026，Vol.47Issue(15)：22-28,7.DOI:10.13302/j.cnki.fi.2026.15.004
复合益生菌对海兰褐蛋鸡生产性能、蛋品质、饲料消化率、肠道菌群及形态的影响
Effects of Composite Microecological Preparations on Production Performance,Egg Quality,Feed Digestibility,Intestinal Flora and Morphology of Hy-Line Brown Laying Hens
摘要
Abstract
The trial aimed to investigate the effects of different doses of composite microecological prepara-tions on the production performance and related indicators of Hy-Line Brown laying hens.The experiment involved 768 Hy-Line Brown laying hens aged 56 weeks,which were randomly divided into three groups.The control group was fed a basal diet,while groupsⅠandⅡreceived basal diets supplemented with 0.05%and 0.10%composite probiotics,respectively.The pre-trial period lasted 4 days,followed by a 66-day main trial period.The results showed that,the egg production rate in group Ⅱ was extremely higher than control group(P<0.01),average egg weight was significantly higher than control group(P<0.05).The average daily feed intake in groupⅠwas extremely higher than control group(P<0.01),the eggshell strength and thickness of group Ⅱ were sig-nificantly higher than those of the control group(P<0.05).The egg shape index,Haugh units,yolk specific gravity and yolk colour in groupsⅠand Ⅱwere higher than control group,though these differences were not statistically significant(P>0.05).The apparent digestibility of metabolizable energy,dry matter,protein,cal-cium and phosphorus in group Ⅱ was significantly greater than the control group(P<0.05).The apparent digestibilities of glycine,arginine,methionine and cysteine in group Ⅱ was extremely higher than control group(P<0.01),the digestibilities for serine,glutamic acid,threonine,alanine,tyrosine,proline,valine,phe-nylalanine,isoleucine,leucine,histidine and lysine in groupⅡwere significantly higher than control group(P<0.05).E.coli counts in groupsⅠ and Ⅱ were extremely lower than control group(P<0.01),Lactobacillus and Bifidobacterium counts in groupⅡwere extremely higher than control group(P<0.01),while Salmonella counts were extremely lower than control group(P<0.01).The villus height in the ileum and cecum of laying hens in groupⅡwas extremely greater than that in the control group(P<0.01),while the villus height in the jejunum was significantly higher(P<0.05).The crypt depth in the ileum and cecum was significantly lower than that of the control group(P<0.05).The ratio of villus height to crypt depth(V/C ratio)in the jejunum,ileum and cecum was extremely higher than that of the control group(P<0.01).These results confirm that adding 0.10%composite microecological agent to the basal diet can effectively enhance the production effi-ciency of Hy-Line Brown laying hens,improve egg quality,enhance the metabolic efficiency of nutrients,and help maintain intestinal microecological balance,thereby promoting intestinal health.关键词
复合益生菌/海兰褐蛋鸡/生产性能/蛋品质/肠道Key words
compound probiotics/Hy-Lane Brown laying hens/production performance/egg quality/intesti-nal分类
农业科技引用本文复制引用
赵吉廷,张帅..复合益生菌对海兰褐蛋鸡生产性能、蛋品质、饲料消化率、肠道菌群及形态的影响[J].饲料工业,2026,47(15):22-28,7.基金项目
江苏省科技项目[BE2021332、BE2022318] （）
江苏省农业科技自主创新资金项目[CX(23)1004-3] （23）
