Enterococcus faecium PNC01 isolated from the intestinal mucosa of chicken as an alternative for antibiotics to reduce feed conversion rate in broiler chickens

He, Yang; Li, Xuan; Dong, Yuanyang; Lei, Jiaqi; Ito, Koichi; Zhang, Bingkun

doi:10.1186/s12934-021-01609-z

Cited by 17 publications

(11 citation statements)

References 58 publications

(62 reference statements)

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“…Antibiotic growth promoters (AGP) are still widely used to improve gut health and growth performance in the global poultry industry, while many countries are trying to restrict the use of AGP in poultry feed [ 1 ]. The continuous and excessive use of AGP has been thought to decrease the efficacy of AGP and threaten public health by spreading antibiotic-resistant bacteria and genes in the poultry industry [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Organic Acids and Essential Oils as Alternatives to Antibiotic Growth Promoters in Broiler Chickens

Choi

Singh

Chen³

et al. 2022

Animals

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This study was conducted to evaluate the effects of OAs and EOs on growth performance, serum biochemistry, antioxidant enzyme activities, intestinal morphology, and digestive enzyme activities to replace AGP in broilers. Six hundred one-day-old broilers were allotted to five treatments with six replicates: (1) negative control (NC; basal diet); (2) positive control (PC; NC + 50 mg/kg bacitracin methylene disalicylate); (3) organic acids (OA; NC + 2000 mg/kg OA); (4) essential oils (EO; NC + 300 mg/kg EO); and (5) OA + EO (NC + 2000 mg/kg OA + 300 mg/kg EO). In the starter phase, the PC, EO, and OA + EO groups had a significantly lower feed conversion ratio (FCR) compared to the NC group. While the final body weight (BW) of broilers fed OAs was similar compared to broilers fed PC (p > 0.1), the FCR of the OA group tended to be lower than the PC group on D 42 (p = 0.074). The OA group had the higher serum GLOB:ALB (albumin) and ileal villus height and crypt depth (VH:CD) ratios compared to the EO group. Thus, the supplementation of EOs and OAs could substitute AGP in the starter and finisher phase, respectively.

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Section: Introductionmentioning

confidence: 99%

Application of Organic Acids and Essential Oils as Alternatives to Antibiotic Growth Promoters in Broiler Chickens

Choi

Singh

Chen³

et al. 2022

Animals

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“…faecium is known as a gut commensal, but also as an opportunistic pathogen in humans and animals [60,61]. Moreover, specific isolates of E. faecium are applied as probiotics In broilers [62,63]. The distinction between these groups lies in differences in their genetic makeup [64,65].…”

Section: Discussionmentioning

confidence: 99%

Impact of diet on jejunal microbiota composition during broiler development with special focus onEnterococcus hiraeandEnterococcus faecium

Stege

Schokker

Harders

et al. 2023

Preprint

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Modern broiler breeds allow for high feed efficiency and rapid growth, but come at a cost of increased susceptibility to pathogens and disease. Broiler growth rate, feed efficiency, and health are furthermore affected by the composition of the gut microbiota, which in turn is influenced by diet composition. In this study we therefore assessed how diet composition alters the broiler jejunal gut microbiota. A total of 96 broiler chickens were divided into four diet groups: control, coated butyrate supplementation, medium chain fatty acid supplementation, or a high-fibre low-protein content. Diet groups were sub-divided into age groups (4, 12 and 33 days of age) resulting in groups of 8 broilers per diet per age. The jejunum content jejunum was used for metagenomic shotgun sequencing to determine the microbiota composition on species level. Among all diet groups, a total of 104 differential abundant bacterial species were detected. Most notably were the changes in the jejunal microbiota induced by butyrate supplementation when compared to the control diet, resulting in the reduced relative abundance of mainly Enterococcus faecium and the opportunistic pathogen Enterococcus hirae in broilers 4 days post-hatch. At this early stage of development, the immune system is still immature thereby highlighting the importance to study the relation of diet and the jejunal microbiota. Future studies should furthermore elucidate how diet can be used to promote a beneficial microbiota in the early stages of broiler development.

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“…The total number of bacteria in every dilution of ileum was calculated, and the 4359 M. EYVAZZADEH ARDABILI, A. NOBAKHT, A.R. SAFAMEHR, Y. MEHMANNAVAZ, A. ZANEBURE mean of them as the total number of bacteria in digestive content per gram was reported in every treatment repetition (He et al, 2021).…”

Section: Methodsmentioning

confidence: 99%

Comparison of nano-capsulated thyme essential oils on intestinal microbial population and anti-oxidation status of broilers

Ardabili

Nobakht

Safamehr

et al. 2022

J Hellenic Vet Med Soc

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This study was conducted to evaluate the effects of non and nano-capsulated thyme essential oils with saturated and unsaturated lipids (tallow and canola oil) and two levels of diet crude protein (standard and low than standard) on intestinal microbial population and anti-oxidation status of broilers. In this study, 384 Ross-308 broiler chickens in a factorial engagement of 2×2×2 (2 medicinal plant essential oils, two sources of vegetable oils, and 2 levels of diet crude protein) were used in a completely randomized design with 8 treatments, 4 replicates, and 12 bird in each replicate for 42 days. Experimental periods included starter (1-10 days), grower (11-24 days), and finisher (25-42 days). Canola oil significantly reduced the intestinal coliforms population. In contrast, tallow increased them (P<0.05), a similar effect was observed with thyme forms, so the lowest coliform population blogged to the nano-capsulated form of thyme. In contrast, the highest coliform population resulted in non-capsulated thyme essential oil (P<0.05). In an interaction between thyme essential oil form and diet crude protein level, the lowest coliform population was observed with diet contained nano-capsulated thyme essential oil and low level of diet crude protein (P<0.05). Regarding antioxidant status, reducing the diet crude protein increased MDA and GPX (P<0.05). In an interaction between diet crude protein and thyme form, a diet with low crude protein and capsulated thyme increased the level of SOD (P<0.05). In general, results of the current experiment indicated that in Ross-308, broiler chickens using capsulated thyme essential oil with canola oil and low crude protein improves intestine microbial population and antioxidant status of broilers.

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Enterococcus faecium PNC01 isolated from the intestinal mucosa of chicken as an alternative for antibiotics to reduce feed conversion rate in broiler chickens

Cited by 17 publications

References 58 publications

Application of Organic Acids and Essential Oils as Alternatives to Antibiotic Growth Promoters in Broiler Chickens

Application of Organic Acids and Essential Oils as Alternatives to Antibiotic Growth Promoters in Broiler Chickens

Impact of diet on jejunal microbiota composition during broiler development with special focus onEnterococcus hiraeandEnterococcus faecium

Comparison of nano-capsulated thyme essential oils on intestinal microbial population and anti-oxidation status of broilers

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