This study was designed to investigate the effects of dietary oregano essential oils on 150 30-week-old Hy-Line Layers’ productive performance, egg quality characteristics, cecal microbiota, digestive enzyme activiti...This study was designed to investigate the effects of dietary oregano essential oils on 150 30-week-old Hy-Line Layers’ productive performance, egg quality characteristics, cecal microbiota, digestive enzyme activities, mucosa structure of the duodenum and jejunum and glucose and small peptides transporters expression in the duodenum and jejunum. All hens were allocated into one of five different groups: negative control (NC;basal diet only), antibiotics control (CS;basal diet plus 100 mg/kg of 10% colistin sulfate) and treatments I, II, and III (basal diet supplemented with 50, 100 and 150 mg/kg oregano essential oils, respectively). The results showed that the laying rate, average egg weight, feed conversion ratio and the activities of amylase and trypsin were significantly improved by a diet supplemented with 100 mg/kg oregano essential oils (P 0.05), significantly increased duodenum villus-height-to-crypt-depth ratios (P 0.05).展开更多
Antibiotics play an important role in livestock breeding,such as promoting animals＇ growth and keeping their fitness,however,the residues easily cause food security problems.This paper analyzed application status of ...Antibiotics play an important role in livestock breeding,such as promoting animals＇ growth and keeping their fitness,however,the residues easily cause food security problems.This paper analyzed application status of antibiotics from the perspectives of reasons for application,dangers,foreign and domestic supervision policies and so on,and proposed origanum oil as the substitute of antibiotics by elaborating its action mechanism and application prospects.展开更多
The product of plant essential oil, oregano carvacrol, was added in the diet of broiler, to study the effect of oregano carvacrol on growth performance of broilers. Using single factor test, 190 663 individuals of hea...The product of plant essential oil, oregano carvacrol, was added in the diet of broiler, to study the effect of oregano carvacrol on growth performance of broilers. Using single factor test, 190 663 individuals of healthy AA broilers at 0 day old were randomly divided into two groups, eight repeats in control group and four repeats in experimental group. The broilers in control group were fed with basal diet （containing 10 mg/kg cnramycin and 60 mg/kg salinomycin sodium）, and those in experimental groups were fed with the basal diet adding with 100 mg/kg oregano carvacrol. Compared with control group, the daily gain of broilers in exper- imental group was increased noticeably by 3.41 g/broiler （P 〈 0. 05） ; the slaughter quality was increased remarkably by 143 g/broiler （P 〈 0.05 ） ; the survival rate was increased significantly by 3.01% （ P 〈 0.05 ） ; and the feed gain ratio was reduced markedly by 0.08 （ P 〈 0.05 ）. The paper provided a theoretical basis for application of oregano carvacrol in broiler production.展开更多
文摘This study was designed to investigate the effects of dietary oregano essential oils on 150 30-week-old Hy-Line Layers’ productive performance, egg quality characteristics, cecal microbiota, digestive enzyme activities, mucosa structure of the duodenum and jejunum and glucose and small peptides transporters expression in the duodenum and jejunum. All hens were allocated into one of five different groups: negative control (NC;basal diet only), antibiotics control (CS;basal diet plus 100 mg/kg of 10% colistin sulfate) and treatments I, II, and III (basal diet supplemented with 50, 100 and 150 mg/kg oregano essential oils, respectively). The results showed that the laying rate, average egg weight, feed conversion ratio and the activities of amylase and trypsin were significantly improved by a diet supplemented with 100 mg/kg oregano essential oils (P 0.05), significantly increased duodenum villus-height-to-crypt-depth ratios (P 0.05).
文摘Antibiotics play an important role in livestock breeding,such as promoting animals＇ growth and keeping their fitness,however,the residues easily cause food security problems.This paper analyzed application status of antibiotics from the perspectives of reasons for application,dangers,foreign and domestic supervision policies and so on,and proposed origanum oil as the substitute of antibiotics by elaborating its action mechanism and application prospects.
文摘The product of plant essential oil, oregano carvacrol, was added in the diet of broiler, to study the effect of oregano carvacrol on growth performance of broilers. Using single factor test, 190 663 individuals of healthy AA broilers at 0 day old were randomly divided into two groups, eight repeats in control group and four repeats in experimental group. The broilers in control group were fed with basal diet （containing 10 mg/kg cnramycin and 60 mg/kg salinomycin sodium）, and those in experimental groups were fed with the basal diet adding with 100 mg/kg oregano carvacrol. Compared with control group, the daily gain of broilers in exper- imental group was increased noticeably by 3.41 g/broiler （P 〈 0. 05） ; the slaughter quality was increased remarkably by 143 g/broiler （P 〈 0.05 ） ; the survival rate was increased significantly by 3.01% （ P 〈 0.05 ） ; and the feed gain ratio was reduced markedly by 0.08 （ P 〈 0.05 ）. The paper provided a theoretical basis for application of oregano carvacrol in broiler production.
