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Kerek Á, Román IL, Szabó Á, Papp M, Bányai K, Kardos G, Kaszab E, Bali K, Makrai L, Jerzsele Á. Comprehensive Metagenomic Analysis of Veterinary Probiotics in Broiler Chickens. Animals (Basel) 2024; 14:1927. [PMID: 38998039 PMCID: PMC11240415 DOI: 10.3390/ani14131927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 06/21/2024] [Accepted: 06/28/2024] [Indexed: 07/14/2024] Open
Abstract
Probiotics are widely used in broiler chickens to support the gut microbiome, gut health, and to reduce the amount of antibiotics used. Despite their benefits, there is concern over their ability to carry and spread antimicrobial resistance genes (ARGs), posing a significant public health risk. This study utilized next-generation sequencing to investigate ARGs in probiotics approved for poultry, focusing on their potential to be transferred via mobile genetic elements such as plasmids and phages. We examined the gut microbiome and resistome changes in 60 broiler chickens over their rearing period, correlating these changes with different probiotic treatments. Specific resistance mechanisms against critically important antibiotics were identified, including genes related to fluoroquinolone resistance and peptide antibiotic resistance. We also found genes with significant relevance to public health (aadK, AAC(6')-Ii) and multiple drug-resistance genes (vmlR, ykkC, ykkD, msrC, clbA, eatAv). Only one phage-encoded gene (dfrA43) was detected, with no evidence of plasmid or mobile genetic element transmission. Additionally, metagenomic analysis of fecal samples showed no significant changes corresponding to time or diet across groups. Our findings highlight the potential risks associated with the use of probiotics in poultry, particularly regarding the carriage of ARGs. It is crucial to conduct further research into the molecular genetics of probiotics to develop strategies that mitigate the risk of resistance gene transfer in agriculture, ensuring the safe and effective use of probiotics in animal husbandry.
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Affiliation(s)
- Ádám Kerek
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary; (I.L.R.); (Á.S.); (K.B.); (Á.J.)
- National Laboratory of Infectious Animal Diseases, Antimicrobial Resistance, Veterinary Public Health and Food Chain Safety, University of Veterinary Medicine Budapest, H-1078 Budapest, Hungary; (M.P.); (G.K.); (E.K.); (K.B.)
| | - István László Román
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary; (I.L.R.); (Á.S.); (K.B.); (Á.J.)
| | - Ábel Szabó
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary; (I.L.R.); (Á.S.); (K.B.); (Á.J.)
| | - Márton Papp
- National Laboratory of Infectious Animal Diseases, Antimicrobial Resistance, Veterinary Public Health and Food Chain Safety, University of Veterinary Medicine Budapest, H-1078 Budapest, Hungary; (M.P.); (G.K.); (E.K.); (K.B.)
- Centre for Bioinformatics, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary
| | - Krisztián Bányai
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary; (I.L.R.); (Á.S.); (K.B.); (Á.J.)
- National Laboratory of Infectious Animal Diseases, Antimicrobial Resistance, Veterinary Public Health and Food Chain Safety, University of Veterinary Medicine Budapest, H-1078 Budapest, Hungary; (M.P.); (G.K.); (E.K.); (K.B.)
- Veterinary Medical Research Institute, Hungária krt. 21, H-1143 Budapest, Hungary
| | - Gábor Kardos
- National Laboratory of Infectious Animal Diseases, Antimicrobial Resistance, Veterinary Public Health and Food Chain Safety, University of Veterinary Medicine Budapest, H-1078 Budapest, Hungary; (M.P.); (G.K.); (E.K.); (K.B.)
- One Health Institute, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary
- National Public Health Center, Albert Flórián út 2-6, H-1097 Budapest, Hungary
- Department of Gerontology, Faculty of Health Sciences, University of Debrecen, Sóstói út 2-4, H-4400 Nyíregyháza, Hungary
| | - Eszter Kaszab
- National Laboratory of Infectious Animal Diseases, Antimicrobial Resistance, Veterinary Public Health and Food Chain Safety, University of Veterinary Medicine Budapest, H-1078 Budapest, Hungary; (M.P.); (G.K.); (E.K.); (K.B.)
- One Health Institute, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary
- Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary
| | - Krisztina Bali
- National Laboratory of Infectious Animal Diseases, Antimicrobial Resistance, Veterinary Public Health and Food Chain Safety, University of Veterinary Medicine Budapest, H-1078 Budapest, Hungary; (M.P.); (G.K.); (E.K.); (K.B.)
- Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary
| | - László Makrai
- Autovakcina Kft., Szabadság sgrt. 57, H-1171 Budapest, Hungary;
| | - Ákos Jerzsele
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, István utca 2, H-1078 Budapest, Hungary; (I.L.R.); (Á.S.); (K.B.); (Á.J.)
- National Laboratory of Infectious Animal Diseases, Antimicrobial Resistance, Veterinary Public Health and Food Chain Safety, University of Veterinary Medicine Budapest, H-1078 Budapest, Hungary; (M.P.); (G.K.); (E.K.); (K.B.)
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Boeder AM, Spiller F, Carlstrom M, Izídio GS. Enterococcus faecalis: implications for host health. World J Microbiol Biotechnol 2024; 40:190. [PMID: 38702495 DOI: 10.1007/s11274-024-04007-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2024] [Accepted: 04/26/2024] [Indexed: 05/06/2024]
Abstract
The microbiota represents a crucial area of research in maintaining human health due to its potential for uncovering novel biomarkers, therapies, and molecular mechanisms relevant to population identification and experimental model characterization. Among these microorganisms, Enterococcus faecalis, a Gram-positive bacterium found in the gastrointestinal tract of humans and animals, holds particular significance. Strains of this bacterial species have sparked considerable debate in the literature due to their dual nature; they can either be utilized as probiotics in the food industry or demonstrate resistance to antibiotics, potentially leading to severe illness, disability, and death. Given the diverse characteristics of Enterococcus faecalis strains, this review aims to provide a comprehensive understanding of their impact on various systems within the host, including the immunological, cardiovascular, metabolic, and nervous systems. Furthermore, we summarize the bacterium-host interaction characteristics and molecular effects to highlight their targets, features, and overall impact on microbial communities and host health.
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Affiliation(s)
- Ariela Maína Boeder
- Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, Brazil
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Fernando Spiller
- Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, Brazil
| | - Mattias Carlstrom
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Geison Souza Izídio
- Department of Pharmacology, Federal University of Santa Catarina, Florianópolis, Brazil.
- Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, Florianópolis, Brazil.
- Department of Psychiatry and Legal Medicine, Autonomous University of Barcelona, Barcelona, Spain.
- Laboratório de Genética do Comportamento, Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Departamento de Biologia Celular, Embriologia e Genética, Florianopolis, SC, Brazil.
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Payen C, Kerouanton A, Novoa J, Pazos F, Benito C, Denis M, Guyard M, Moreno FJ, Chemaly M. Effects of Major Families of Modulators on Performances and Gastrointestinal Microbiota of Poultry, Pigs and Ruminants: A Systematic Approach. Microorganisms 2023; 11:1464. [PMID: 37374967 DOI: 10.3390/microorganisms11061464] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 05/25/2023] [Accepted: 05/26/2023] [Indexed: 06/29/2023] Open
Abstract
Considering the ban on the use of antibiotics as growth stimulators in the livestock industry, the use of microbiota modulators appears to be an alternative solution to improve animal performance. This review aims to describe the effect of different families of modulators on the gastrointestinal microbiota of poultry, pigs and ruminants and their consequences on host physiology. To this end, 65, 32 and 4 controlled trials or systematic reviews were selected from PubMed for poultry, pigs and ruminants, respectively. Microorganisms and their derivatives were the most studied modulator family in poultry, while in pigs, the micronutrient family was the most investigated. With only four controlled trials selected for ruminants, it was difficult to conclude on the modulators of interest for this species. For some modulators, most studies showed a beneficial effect on both the phenotype and the microbiota. This was the case for probiotics and plants in poultry and minerals and probiotics in pigs. These modulators seem to be a good way for improving animal performance.
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Affiliation(s)
- Cyrielle Payen
- French Agency for Food, Environmental and Occupational Health and Safety, ANSES, Hygiene and Quality of Poultry, Pig Products Unit, 22440 Ploufragan, France
| | - Annaëlle Kerouanton
- French Agency for Food, Environmental and Occupational Health and Safety, ANSES, Hygiene and Quality of Poultry, Pig Products Unit, 22440 Ploufragan, France
| | - Jorge Novoa
- Computational Systems Biology Group, National Centre for Biotechnology (CNB-CSIC), Darwin 3, 28049 Madrid, Spain
| | - Florencio Pazos
- Computational Systems Biology Group, National Centre for Biotechnology (CNB-CSIC), Darwin 3, 28049 Madrid, Spain
| | - Carlos Benito
- Instituto de Gestión de la Innovación y del Conocimiento, INGENIO (CSIC and U. Politécnica de Valencia), Edificio 8E, Cam. de Vera, 46022 Valencia, Spain
| | - Martine Denis
- French Agency for Food, Environmental and Occupational Health and Safety, ANSES, Hygiene and Quality of Poultry, Pig Products Unit, 22440 Ploufragan, France
| | - Muriel Guyard
- French Agency for Food, Environmental and Occupational Health and Safety, ANSES, Hygiene and Quality of Poultry, Pig Products Unit, 22440 Ploufragan, France
| | - F Javier Moreno
- Instituto de Investigación en Ciencias de la Alimentación (CIAL), CSIC-UAM, CEI (UAM + CSIC), Nicolás Cabrera 9, 28049 Madrid, Spain
| | - Marianne Chemaly
- French Agency for Food, Environmental and Occupational Health and Safety, ANSES, Hygiene and Quality of Poultry, Pig Products Unit, 22440 Ploufragan, France
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Aida M, Yamada R, Matsuo T, Taniguchi I, Nakamura SI, Tsukahara T. Dietary Weizmannia coagulans Strain SANK70258 Ameliorates Coccidial Symptoms and Improves Intestinal Barrier Functions of Broilers by Modulating the Intestinal Immunity and the Gut Microbiota. Pathogens 2023; 12:96. [PMID: 36678444 PMCID: PMC9864622 DOI: 10.3390/pathogens12010096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/22/2022] [Accepted: 12/26/2022] [Indexed: 01/09/2023] Open
Abstract
To determine the mechanisms by which Weizmannia coagulans SANK70258 (WC) supplementation improved growth performance and coccidial symptoms, we assessed the gene expressions and the microbiota compositions in the small intestinal tissues and digestas of coccidium-infected broilers previously given WC or lasalocid-A sodium (AM). WC supplementation significantly upregulated the gene expressions related to intestinal immunity and barrier functions, such as IL17A, IL17F, IL10, cathelicidin-2 and pIgR. Body weights, and Claudin-1 and IL10 expressions were positively correlated (r = 0.41, p < 0.05 and r = 0.37, p = 0.06, respectively), whereas lesion scores of the small intestine and IL17A expression were negatively correlated (r = −0.33, p = 0.09). The microbiota analysis detected that genus Alistipes was more abundant in WC-supplemented broilers than in control, and positively correlated with body weights and Claudin-1 expression (r = 0.61, p < 0.05 and r = 0.51, p < 0.05, respectively). Intriguingly, genus Enterococcus was most abundant in WC-supplemented broilers and positively correlated with IL17A expression (r = 0.49, p < 0.05). Interestingly, Escherichia-Shigella was significantly more abundant in the small intestinal digestas of AM-administered broilers than in those of control. To summarize, WC supplementation modulated and immunostimulated the microbiotas of broilers, specifically genera Alistipes and Enterococcus, which led to the improvement of weight gain and coccidial symptoms, without disrupting the intestinal microbiota compositions, as AM did.
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Affiliation(s)
- Masanori Aida
- Science & Innovation Center, Mitsubishi Chemical Corporation, Yokohama 227-8502, Kanagawa, Japan
| | - Ryouichi Yamada
- Science & Innovation Center, Mitsubishi Chemical Corporation, Yokohama 227-8502, Kanagawa, Japan
| | | | | | - Shin-ichi Nakamura
- Kyoto Institute of Nutrition & Pathology, Ujitawara 610-0231, Kyoto, Japan
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Han W, Zhuang X, Liu Q, Sun B, Miao H, Zhang X. Fermented soy whey induced changes on intestinal microbiota and metabolic influence in mice. FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2021.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Wang M, Huang H, Hu Y, Huang J, Yang H, Wang L, Chen S, Chen C, He S. Effects of dietary microencapsulated tannic acid supplementation on the growth performance, intestinal morphology, and intestinal microbiota in weaning piglets. J Anim Sci 2020; 98:skaa112. [PMID: 32255185 PMCID: PMC7199885 DOI: 10.1093/jas/skaa112] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Accepted: 04/04/2020] [Indexed: 12/22/2022] Open
Abstract
Antibiotics are commonly overused to reduce weaning stress that leads to economic loss in swine production. As potential substitutes of antibiotics, plant extracts have attracted the attention of researchers. However, one of the plant extracts, tannic acid (TA), has an adverse effect on the growth performance, palatability, and intestinal absorption in weaning piglets when used at a large amount. Thus, this study aimed to investigate the effects of a proper dose of microencapsulated TA on the growth performance, organ and intestinal development, intestinal morphology, intestinal nutrient transporters, and colonic microbiota in weaning piglets. Forty-five Duroc × [Landrace × Yorkshire] (initial body weight = 5.99 ± 0.13 kg, weaned days = 21 d) piglets were randomly divided into five treatment groups (n = 9) and raised in 14 d. The piglets in the control group were raised on a basal diet; the piglets in the antibiotic test group were raised on a basal diet with three antibiotics (375 mg/kg Chlortetracycline 20%, 500 mg/kg Enramycin 4%, 1,500 mg/kg Oxytetracycline calcium 20%); and the other three groups were raised on a basal diet with three doses of microencapsulated TA (TA1, 500 mg/kg; TA2, 1,000 mg/kg; TA3, 1,500 mg/kg). All the piglets were raised in the same environment and given the same amount of nutrients for 2 wk. The results showed that both TA1 and TA2 groups had no adverse effect on the growth performance, organ weight and intestinal growth, and the pH value of gastrointestinal content. TA2 treatment improved the duodenal morphology (P < 0.05), increased the gene expression level of solute carrier family 6, member 19 and solute carrier family 15, member 1 (P < 0.05) in the ileum, and modulated the colonic bacteria composition (P < 0.05), but inhibited the activity of maltase in the ileum (P < 0.05) and the jejunal gene expression level of solute carrier family 5, member 1 (P < 0.05). In conclusion, our study suggests that a dosage between 500 and 1,000 mg/kg of microencapsulated TA is safe to be included in the swine diet and that 1,000 mg/kg of microencapsulated TA has beneficial effects on intestinal morphology, intestinal nutrient transporter, and intestinal microbiota in weaning piglets. These findings provide new insights into suitable alternatives to antibiotics for improving growth performance and colonic microbiota.
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Affiliation(s)
- Meiwei Wang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, School of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Huijun Huang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, School of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Yangping Hu
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, School of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Jing Huang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, School of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Huansheng Yang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, School of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Lei Wang
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, School of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Shuai Chen
- Chinese Academy of Science, Institute of Subtropical Agriculture, Research Center for Healthy Breeding of Livestock and Poultry, Hunan Engineering and Research Center of Animal and Poultry Science and Key Laboratory for Agroecological Processes in Subtropical Region, Scientific Observation and Experimental Station of Animal Nutrition and Feed Science in South-Central, Ministry of Agriculture, Changsha, Hunan, China
| | - Chiqing Chen
- Wufeng Chicheng Biotechnology Company Limited, Yichang, Hubei, China
| | - Shanping He
- State Key Laboratory of Developmental Biology of Freshwater Fish, Hunan Provincial Key Laboratory of Animal Intestinal Function and Regulation, Hunan International Joint Laboratory of Animal Intestinal Ecology and Health, School of Life Sciences, Hunan Normal University, Changsha, Hunan, China
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7
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Song D, Wang YW, Lu ZX, Wang WW, Miao HJ, Zhou H, Wang L, Li AK. Effects of dietary supplementation of microencapsulated Enterococcus fecalis and the extract of Camellia oleifera seed on laying performance, egg quality, serum biochemical parameters, and cecal microflora diversity in laying hens. Poult Sci 2019; 98:2880-2887. [PMID: 30850828 DOI: 10.3382/ps/pez033] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 01/23/2019] [Indexed: 01/21/2023] Open
Abstract
The aim of this study was to investigate the effects of microencapsulted Enterococcus faecalis (MEF) and the extract of Camellia oleifera seed (ECOS) on laying performance, serum biochemical parameters, and cecal microflora diversity in laying hens. A total of 180 Hy-Line Brown laying hens, 26-wk-old, were randomly allocated to 6 treatments with 10 replicates and 3 hens per replicate. Dietary treatments were as follows: (A) control group, basal diet; (B) basal diet + 100 mg MEF/kg diet (1 × 1010 cfu/g MEF); (C) basal diet + 300 mg ECOS/kg diet; (D) basal diet + 100 mg MEF/kg diet + 300 mg ECOS/kg diet; (E) basal diet + 500 mg ECOS/kg diet; (F) basal diet + 100 mg MEF/kg diet + 500 mg ECOS/kg diet. The results showed that diets supplemented with MEF and ECOS had no significant effects on laying rate, average egg size, average daily feed intake, feed conversion ratio, eggshell thickness, albumen height, and yolk color (P > 0.05), but had significant effects on egg shape index, eggshell strength, and Haugh unit (P < 0.05) during whole feeding phases. Compared to the control group, the serum IgA and IgG levels of birds in Group F significantly increased (P < 0.05). The serum total cholesterol, low-density lipoprotein cholesterol, total triglyceride, and blood urea nitrogen levels of birds in Group D and Group F significantly reduced (P < 0.05), and the high-density lipoprotein cholesterol level of birds in Group D and Group F significantly increased (P < 0.05). At the phylum level, Firmicutes decreased (P < 0.05) and Bacteroidetes increased (P < 0.05) in the birds of Group D. Ruminococcus and Bacteroides were significantly affected by dietary treatments (P < 0.05), and Bacteroides in the birds of Group D significantly increased at the genus level. Therefore, diet supplemented with MEF and ECOS can significantly improve serum biochemical parameters and increase cecal microflora diversity.
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Affiliation(s)
- D Song
- Academy of State Administration of Grain, Beijing 100037, P. R. China
| | - Y W Wang
- Academy of State Administration of Grain, Beijing 100037, P. R. China
| | - Z X Lu
- Academy of State Administration of Grain, Beijing 100037, P. R. China
| | - W W Wang
- Academy of State Administration of Grain, Beijing 100037, P. R. China
| | - H J Miao
- Academy of State Administration of Grain, Beijing 100037, P. R. China
| | - H Zhou
- Academy of State Administration of Grain, Beijing 100037, P. R. China
| | - L Wang
- Academy of State Administration of Grain, Beijing 100037, P. R. China
| | - A K Li
- Academy of State Administration of Grain, Beijing 100037, P. R. China
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Peralta-Sánchez JM, Martín-Platero AM, Ariza-Romero JJ, Rabelo-Ruiz M, Zurita-González MJ, Baños A, Rodríguez-Ruano SM, Maqueda M, Valdivia E, Martínez-Bueno M. Egg Production in Poultry Farming Is Improved by Probiotic Bacteria. Front Microbiol 2019; 10:1042. [PMID: 31178831 PMCID: PMC6543855 DOI: 10.3389/fmicb.2019.01042] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 04/25/2019] [Indexed: 12/22/2022] Open
Abstract
Antimicrobial resistance (AMR) is one of the most serious threats for human health in the near future. Livestock has played an important role in the appearance of antibiotic-resistant bacteria, intestinal dysbiosis in farming animals, or the spread of AMR among pathogenic bacteria of human concern. The development of alternatives like probiotics is focused on maintaining or improving production levels while diminishing these negative effects of antibiotics. To this end, we supplied the potential probiotic Enterococcus faecalis UGRA10 in the diet of laying hens at a final concentration of 108 Colony Forming Units per gram (CFU/g) of fodder. Its effects have been analyzed by: (i) investigating the response of the ileum and caecum microbiome; and (ii) analyzing the outcome on eggs production. During the second half of the experimental period (40 to 76 days), hens fed E. faecalis UGRA10 maintained egg production, while control animals dropped egg production. Supplementation diet with E. faecalis UGRA10 significantly increased ileum and caecum bacterial diversity (higher bacterial operational taxonomic unit richness and Faith’s diversity index) of laying hens, with animals fed the same diet showing a higher similarity in microbial composition. These results point out to the beneficial effects of E. faecalis UGRA10 in egg production. Future experiments are necessary to unveil the underlying mechanisms that mediate the positive response of animals to this treatment.
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Affiliation(s)
| | | | | | | | | | - Alberto Baños
- Departamento de Microbiología y Biotecnología - DMC Research Center, Granada, Spain
| | - Sonia María Rodríguez-Ruano
- Departamento de Microbiología, Universidad de Granada, Granada, Spain.,Faculty of Science, University of South Bohemia, České Budějovice, Czechia
| | - Mercedes Maqueda
- Departamento de Microbiología, Universidad de Granada, Granada, Spain
| | - Eva Valdivia
- Departamento de Microbiología, Universidad de Granada, Granada, Spain.,Instituto de Biotecnología, Universidad de Granada, Granada, Spain
| | - Manuel Martínez-Bueno
- Departamento de Microbiología, Universidad de Granada, Granada, Spain.,Instituto de Biotecnología, Universidad de Granada, Granada, Spain
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9
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Kim WH, Lillehoj HS. Immunity, immunomodulation, and antibiotic alternatives to maximize the genetic potential of poultry for growth and disease response. Anim Feed Sci Technol 2019. [DOI: 10.1016/j.anifeedsci.2018.09.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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10
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Rubio LA. Possibilities of early life programming in broiler chickens via intestinal microbiota modulation. Poult Sci 2019; 98:695-706. [PMID: 30247675 DOI: 10.3382/ps/pey416] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 08/29/2018] [Indexed: 01/03/2023] Open
Abstract
The strong selection in search for a higher growth rate in broilers has resulted in adverse effects such as metabolic disorders, low responsiveness of the immune system, and decreased resistance to pathogens. On the other hand, newly hatched chicks rely mostly on innate immune responses until their gut gets colonized with microbiota. In consequence, early access to active substances or bacteria (pre- and post-hatch) is particularly relevant here because in broilers much of the immune system development occurs early in life. Therefore, early stimulation of beneficial microflora is critical, as it affects, to a great extent, the entire life-span of an individual, and also because the nutritional manipulations of the gastrointestinal tract (GIT) microbiome to enhance productivity and health are rather limited by the resilience of the ecosystem once established in the chicken´s gut. Early life or developmental programming is based on the assumption that the development of diseases later in life can be modulated by perturbations or environmental exposures during critical pre- or early post-natal life. Substances such as plant derivatives, Na butyrate, pre- and probiotics, and β-glucans have been shown to induce beneficial microbiological and immunological changes within the GIT, and therefore are potential candidates to be used as tools to manipulate GIT functionality in the young chicken. Accordingly, substances as these might represent promising candidates to study intestinal microbiota/immune system modulation in broilers´ early stages of breeding. In ovo-delivered prebiotics and synbiotics have been shown to have no adverse effect on the development of the immune system in exposed chickens, while being able to affect lymphoid-organs' morphology in chickens. In ovo procedures have also been proposed as means of promoting a healthy microflora in embryonic guts and stimulating maturation of the cellular and humoral immune responses in central and peripheral immune organs, including those in the GIT. The purpose of this presentation is to discuss the potential usefulness of the instruments currently available to induce early life programming in broilers.
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Affiliation(s)
- Luis A Rubio
- Physiology and Biochemistry of Animal Nutrition (EEZ, CSIC), Granada 18008, Spain
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11
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Ma T, Suzuki Y, Guan LL. Dissect the mode of action of probiotics in affecting host-microbial interactions and immunity in food producing animals. Vet Immunol Immunopathol 2018; 205:35-48. [PMID: 30459000 DOI: 10.1016/j.vetimm.2018.10.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/29/2018] [Accepted: 10/16/2018] [Indexed: 02/07/2023]
Abstract
Prophylactic antimicrobials have been widely used in food animal production with the aim to prevent infectious diseases, enhance feed efficiency, and promote growth. However, the extensive use of antimicrobials in food animal production systems has led to the emergence of antimicrobial resistant pathogens, which are potential threats to human and animal health. Probiotics have been proposed to be a promising alternative of prophylactic antimicrobials, with potential beneficial effects on the host animal by improving the balance of intestinal microbiota and host immunity. Although an increasing body of evidence shows that probiotics could directly or indirectly affect gut microbiota and host immune functions, the lack of the understanding of how probiotics influence host-microbial interaction and immunity is one of the reasons for controversial findings from many animal trials, especially in food production animals. Therefore, in this review we focused on the most recent (last ten years) studies on how gut microbiota and host immune function changes in response to probiotics in food production animals (swine, poultry, and ruminant). In addition, the relationship between microbial changes and host immune function was illustrated, and how such relationship differs among animal species was further compared. Moreover, the future directions concerning the mechanisms of how probiotics modulate host-microbial interactions and host immunity were highlighted, which may assist in the optimal supplementation strategy to maximize the efficacy of probiotics to improve animal gut health and productivity.
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Affiliation(s)
- Tao Ma
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada; Feed Research Institute, Chinese Academy of Agricultural Sciences, Key laboratory of Feed Biotechnology of the Ministry of Agriculture, Beijing, China
| | - Yutaka Suzuki
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada; Laboratory of Animal Function and Nutrition, Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan
| | - Le Luo Guan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada.
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Onrust L, Van Driessche K, Ducatelle R, Schwarzer K, Haesebrouck F, Van Immerseel F. Valeric acid glyceride esters in feed promote broiler performance and reduce the incidence of necrotic enteritis. Poult Sci 2018; 97:2303-2311. [PMID: 29562369 DOI: 10.3382/ps/pey085] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Valeric acid is a C5 fatty acid, naturally produced in low concentrations by specific members of the microbiota of the lower intestinal tract. Effects of valeric acid on intestinal health have been poorly investigated. Valeric acid derivatives can be produced as glyceride esters and added to broiler feed. In the current study, experiments were carried out to evaluate the effect of valeric acid glycerides (GVA) on growth performance, on the morphology of the small intestinal mucosa and on protection against necrotic enteritis. In a first feeding trial, Ross-308 chicks were randomly divided into 2 dietary treatment groups and fed either a non-supplemented diet or a diet supplemented with GVA (1.5 g/kg). In the GVA supplemented group, the feed conversion ratio was significantly decreased during the entire trial period (D1-37). In a second trial, gut wall morphology was evaluated. In broilers fed a GVA-containing diet at 5 g/kg, the villus height/crypt depth ratio in the jejunum was significantly increased (P ≤ 0.05), and the crypt depth was significantly decreased at 28 d. In a third trial, immunohistochemistry showed that the density of glucagon-like peptide-2 immunoreactive cells in jejunal and ileal villi from broilers supplemented with GVA (5 g/kg) was significantly increased (P ≤ 0.05) on d 10. In a necrotic enteritis challenge model, a significant reduction of the number of birds with necrotic lesions was found at d 21, using in-feed supplementation of low and high regimen of GVA. These data show that GVA supplementation to broiler feed can decrease the feed conversion, positively affect the morphology of the small intestinal mucosa, increase the density of glucagon-like peptide-2 producing enteroendocrine cells, and reduce the incidence of necrotic enteritis, making GVA a valuable candidate feed additive for broilers.
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Affiliation(s)
- Lonneke Onrust
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820, Merelbeke, Belgium
| | - Karolien Van Driessche
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820, Merelbeke, Belgium
| | - Richard Ducatelle
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820, Merelbeke, Belgium
| | - Koen Schwarzer
- Perstorp BV, Industrieweg 8, NL-5165NH, Waspik, The Netherlands
| | - Freddy Haesebrouck
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820, Merelbeke, Belgium
| | - Filip Van Immerseel
- Department of Pathology, Bacteriology and Avian Diseases, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, B-9820, Merelbeke, Belgium
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Aluko K, Velayudhan DE, Khafipour E, Li A, Yin Y, Nyachoti M. Combined effects of chitosan and microencapsulated Enterococcus faecalis CG1.0007 probiotic supplementation on performance and diarrhea incidences in enterotoxigenic Escherichia coli K88 + challenged piglets. ACTA ACUST UNITED AC 2017; 3:366-371. [PMID: 29767090 PMCID: PMC5941263 DOI: 10.1016/j.aninu.2017.09.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 08/22/2017] [Accepted: 09/05/2017] [Indexed: 01/16/2023]
Abstract
The aim of this study was to investigate the combined effects of chitosan oligosaccharide (COS) and a microencapsulated Enterococcus faecalis CG1.0007 probiotic (PRO) on growth performance and diarrhea incidences in enterotoxigenic Escherichia coli (ETEC) K88+ challenged piglets in a 14-d study. Thirty piglets, 7.19 ± 0.52 kg initial BW weaned at 21 ± 1 d, were allotted to 5 treatment groups (n = 6) consisting of a corn-soybean meal diet with no additive (negative control, NC), NC + 0.25% chlortetracycline (positive control, PC), NC + 400 mg/kg COS (COS), NC + 100 mg/kg PRO (PRO) and NC + a combination of COS and PRO (CPRO). Pigs were individually housed in cages, acclimated to treatments for a 7-d period and had ad libitum access to feed and water throughout the study. On d 8, pigs were weighed, blood samples were collected, and then orally challenged with 6 mL (1 × 1011 cfu/mL) of freshly grown ETEC inoculum. During post-challenge period, blood was sampled at 24 and 48 h to determine plasma urea nitrogen (PUN), and diarrhea incidences and fecal consistency scores were recorded from d 9 to 12. On d 14, all pigs were weighed and then euthanized to obtain intestinal tissue samples for histomorphometric measurements. Growth performance responses were similar among treatments during the pre- and post-challenge periods. There were no significant differences in PUN content, incidences of diarrhea, and fecal consistency scores among treatments. The intestinal histomorphology results did not differ significantly among treatments except for PC with increased (P = 0.0001) villus:crypt ratio compared with the NC. Under the conditions of the present study, it can be concluded that supplementation of piglet diets with 400 mg/kg COS, 100 mg/kg microencapsulated PRO or their combination did not significantly improve piglet growth performance both during the pre- and post-ETEC K88+ oral inoculation. Also, there were no significant reduction of incidences and severity of diarrhea after challenge compared with the control group.
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Affiliation(s)
- Kolawole Aluko
- Department of Animal Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Deepak E Velayudhan
- Department of Animal Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Ehsan Khafipour
- Department of Animal Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Aike Li
- Academy of Science and Technology of State Administration of Grain, Beijing 100037, China
| | - Yulong Yin
- Institute of Subtropical Agriculture, Chinese Academic of Sciences, Changsha 410125, China
| | - Martin Nyachoti
- Department of Animal Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
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Alternatives to antibiotics for maximizing growth performance and feed efficiency in poultry: a review. Anim Health Res Rev 2017; 18:26-45. [DOI: 10.1017/s1466252316000207] [Citation(s) in RCA: 320] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
AbstractWith the increase in regulations regarding the use of antibiotic growth promoters and the rise in consumer demand for poultry products from ‘Raised Without Antibiotics’ or ‘No Antibiotics Ever’ flocks, the quest for alternative products or approaches has intensified in recent years. A great deal of research has focused on the development of antibiotic alternatives to maintain or improve poultry health and performance. This review describes the potential for the various alternatives available to increase animal productivity and help poultry perform to their genetic potential under existing commercial conditions. The classes of alternatives described include probiotics, prebiotics, synbiotics, organic acids, enzymes, phytogenics, antimicrobial peptides, hyperimmune egg antibodies, bacteriophages, clay, and metals. A brief description of the mechanism of action, efficacy, and advantages and disadvantages of their uses are also presented. Though the beneficial effects of many of the alternatives developed have been well demonstrated, the general consensus is that these products lack consistency and the results vary greatly from farm to farm. Furthermore, their mode of action needs to be better defined. Optimal combinations of various alternatives coupled with good management and husbandry practices will be the key to maximize performance and maintain animal productivity, while we move forward with the ultimate goal of reducing antibiotic use in the animal industry.
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15
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Chen H, Velayudhan D, Li A, Feng Z, Liu D, Yin Y, Nyachoti C. Growth performance, gastrointestinal microbial activity, and immunological response of piglets receiving microencapsulatedEnterococcus faecalisCG1.0007 and enzyme complex after an oral challenge withEscherichia coli(K88). CANADIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.1139/cjas-2015-0051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The aim of this study was to determine effects of dietary microencapsulated Enterococcus faecalis CG1.0007 probiotic and multienzyme complex (MC) in Enterotoxigenic Escherichia coli K88 (ETEC) challenged piglets. Thirty-six, 21-d-old weanling pigs were randomly allotted to four dietary treatments: a wheat–barley based negative control (NC), NC + MC, NC + probiotic, and NC + MC + probiotic. After 7-d acclimatization to treatments, pigs were weighed, blood was sampled, and then the pigs were orally challenged with an ETEC inoculum. After the challenge, blood was sampled at different time points; performance measures and fecal consistency scores were recorded; and on day 14, all pigs were killed to obtain intestinal tissue samples. During prechallenge, pigs receiving enzyme, probiotic, and a combination of both showed a significant improvement in daily gain (P = 0.03) and feed efficiency (P = 0.04) compared with control. During the postchallenge period, a greater (P = 0.05) ileal villus height was observed for diets supplemented with probiotic alone. Overall, pigs fed diets with probiotic alone also showed less incidence of diarrhea (P = 0.04) compared with control. In summary, the results indicate that dietary supplementation with microencapsulated Enterococcus faecalis CG1.0007 in weaned piglets challenged with ETEC was effective in controlling diarrhea.
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Affiliation(s)
- H.S. Chen
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Science, 368 Xuefu Road, Harbin, China
- Department of Animal Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - D.E. Velayudhan
- Department of Animal Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - A. Li
- Academy of State Administration of Grain, Beijing, China
| | - Z. Feng
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Science, 368 Xuefu Road, Harbin, China
| | - D. Liu
- Institute of Animal Husbandry, Heilongjiang Academy of Agricultural Science, 368 Xuefu Road, Harbin, China
| | - Y.L. Yin
- Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China
| | - C.M. Nyachoti
- Department of Animal Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
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16
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Song D, Wang YW, Hou YJ, Dong ZL, Wang WW, Li AK. The effects of dietary supplementation of microencapsulated Enterococcus faecalis and the extract of Camellia oleifera seed on growth performance, immune functions, and serum biochemical parameters in broiler chickens1. J Anim Sci 2016; 94:3271-3277. [DOI: 10.2527/jas.2016-0286] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
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17
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Henry DD, Ruiz-Moreno M, Ciriaco FM, Kohmann M, Mercadante VRG, Lamb GC, DiLorenzo N. Effects of chitosan on nutrient digestibility, methane emissions, and in vitro fermentation in beef cattle. J Anim Sci 2016; 93:3539-50. [PMID: 26440023 DOI: 10.2527/jas.2014-8844] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Chitosan was evaluated as a feed additive to mitigate in vivo CH4 emissions in beef cattle. Twenty-four crossbred heifers (BW = 318 ± 35 kg) were used in a randomized block design replicated in 2 periods. The design included a 2 × 3 factorial arrangement of treatments, which included diet (high concentrate [HC] or low concentrate [LC]) and 0.0, 0.5, or 1.0% of chitosan inclusion (DM basis). Diets were offered ad libitum and individual intake was recorded. An in vitro experiment to analyze chitosan’s effect on fermentation parameters and gas production kinetics was performed. A diet effect (P < 0.01) was observed for CH4 emissions expressed as grams/day, grams/kilogram of BW0.75, and grams/kilogram of DMI. Heifers consuming the LC diet produced 130 g of CH4/d vs. 45 g of CH4/d in those consuming the HC diet. Incubation fluid pH increased linearly (P < 0.05) when chitosan was included in HC substrates. In vitro CH4 production was not affected (P > 0.10) by chitosan in HC substrate; however, when incubated with the LC substrate, CH4 production increased quadratically (P < 0.01) as chitosan inclusion increased. A digestibility marker × diet interaction occurred (P < 0.05) for DM, OM, CP, NDF, and ADF digestibility. Diet × chitosan interactions (P < 0.05) occurred for DM, OM, NDF, and ADF digestibility when Cr2O3 was used. When TiO2 was used, diet × chitosan interactions (P < 0.05) were observed for NDF and ADF. However, using indigestible NDF as an internal marker, DM and OM digestibility were improved (P < 0.05) by 21 and 19%, respectively, when chitosan was included in LC diets. In conclusion, feeding up to 1% of chitosan (DM basis) to heifers consuming a LC diet increased apparent total tract digestibility of nutrients. Enteric CH4 emissions were not affected by chitosan feeding, regardless of type of diet, and heifers consuming a 36% concentrate diet produced 2.6 times more methane per day than those consuming an 85% concentrate diet.
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Dong Z, Wang Y, Song D, Hou Y, Wang W, Qi W, Yun T, Li A. The effects of dietary supplementation of pre-microencapsulated Enterococcus fecalis and the extract of Camellia oleifera seed on growth performance, intestinal morphology, and intestinal mucosal immune functions in broiler chickens. Anim Feed Sci Technol 2016. [DOI: 10.1016/j.anifeedsci.2015.11.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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19
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Zhang L, Li J, Yun T, Qi W, Liang X, Wang Y, Li A. Effects of pre-encapsulated and pro-encapsulated Enterococcus faecalis on growth performance, blood characteristics, and cecal microflora in broiler chickens. Poult Sci 2015; 94:2821-30. [DOI: 10.3382/ps/pev262] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2015] [Indexed: 12/11/2022] Open
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20
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Zhang L, Li J, Yun TT, Li AK, Qi WT, Liang XX, Wang YW, Liu S. Evaluation of pilot-scale microencapsulation of probiotics and product effect on broilers1. J Anim Sci 2015; 93:4796-807. [DOI: 10.2527/jas.2015-9243] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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21
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Hu Y, Dun Y, Li S, Zhang D, Peng N, Zhao S, Liang Y. Dietary Enterococcus faecalis LAB31 improves growth performance, reduces diarrhea, and increases fecal Lactobacillus number of weaned piglets. PLoS One 2015; 10:e0116635. [PMID: 25617897 PMCID: PMC4305361 DOI: 10.1371/journal.pone.0116635] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 12/12/2014] [Indexed: 11/19/2022] Open
Abstract
Lactic acid bacteria (LAB) have been shown to enhance performance of weaned piglets. However, few studies have reported the addition of LAB Enterococcus faecalis as alternatives to growth promoting antibiotics for weaned piglets. This study evaluated the effects of dietary E. faecalis LAB31 on the growth performance, diarrhea incidence, blood parameters, fecal bacterial and Lactobacillus communities in weaned piglets. A total of 360 piglets weaned at 26 ± 2 days of age were randomly allotted to 5 groups (20 pens, with 4 pens for each group) for a trial of 28 days: group N (negative control, without antibiotics or probiotics); group P (Neomycin sulfate, 100 mg/kg feed); groups L, M and H (supplemented with E. faecalis LAB31 0.5×109, 1.0×109, and 2.5×109 CFU/kg feed, respectively). Average daily gain and feed conversion efficiency were found to be higher in group H than in group N, and showed significant differences between group H and group P (P0 < 0.05). Furthermore, groups H and P had a lower diarrhea index than the other three groups (P0 < 0.05). Denaturing gradient gel electrophoresis (DGGE) showed that the application of probiotics to the diet changed the bacterial community, with a higher bacterial diversity in group M than in the other four groups. Real-time PCR revealed that the relative number of Lactobacillus increased by addition of probiotics, and was higher in group H than in group N (P0 < 0.05). However, group-specific PCR-DGGE showed no obvious difference among the five groups in Lactobacillus composition and diversity. Therefore, the dietary addition of E. faecalis LAB31 can improve growth performance, reduce diarrhea, and increase the relative number of Lactobacillus in feces of weaned piglets.
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Affiliation(s)
- Yuanliang Hu
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
- College of Life Sciences, Hubei Normal University, Huangshi, Hubei 435002, P.R. China
| | - Yaohao Dun
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Shenao Li
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Dongxiao Zhang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Nan Peng
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Shumiao Zhao
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
| | - Yunxiang Liang
- State Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R. China
- * E-mail:
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A review on prebiotics and probiotics for the control of dysbiosis: present status and future perspectives. Animal 2014; 9:43-8. [PMID: 25336177 DOI: 10.1017/s1751731114002584] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Dysbiosis or dysbacteriosis is defined as a shift in the intestinal microbiota composition resulting in an imbalance between beneficial and harmful bacteria. Since the ban on the use of growth-promoting antibiotics in animal feed in the EU, dysbiosis has emerged as a major problem in intensive animal production. Prebiotics and probiotics are currently under investigation as possible alternatives to growth-promoting antibiotics, as their mode of action is thought to be based largely on a modulation of the composition and function of the intestinal microbiota. In this review, we analyse the currently available data from both animal and human nutrition that document the potential and limitations of prebiotics and probiotics for the control of dysbiosis. An impressive number of empirical feeding trials have been carried out in healthy animals, yielding sometimes contradictory results. More in-depth studies have revealed the complexity of the interactions taking place in the lower intestinal tract, thus illustrating that pre- and probiotics cannot be a simple replacement for growth-promoting antibiotics. Although there are indications that the strategic use of pre- and probiotics can provide major benefits, there is still a lack of basic knowledge on the delicate interactions between the microbiota, the host and the feed components, which hampers the widespread use of these valuable feed additives.
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Hu Y, Dun Y, Li S, Zhao S, Peng N, Liang Y. Effects of Bacillus subtilis KN-42 on Growth Performance, Diarrhea and Faecal Bacterial Flora of Weaned Piglets. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2014; 27:1131-40. [PMID: 25083107 PMCID: PMC4109869 DOI: 10.5713/ajas.2013.13737] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 01/24/2014] [Accepted: 03/25/2014] [Indexed: 12/20/2022]
Abstract
This research focused on the effects of different doses of Bacillus subtilis KN-42 on the growth performance, diarrhea incidence, faecal bacterial flora, and the relative number of Lactobacillus and Escherichia coli in faeces of weaned piglets to determine whether the strain can serve as a candidate antimicrobial growth promoter. A total of 360 piglets (initial body weight 7.14±0.63 kg) weaned at 26±2 days of age were randomly allotted to 5 treatment groups (4 pens per treatment with 18 pigs per pen) for a 28-day trial. Dietary treatments were basal diet without any antimicrobial (negative control; NC), basal diet supplemented with 120 mg/kg feed of neomycin sulfate (positive control; PC) and basal diet supplemented with 2×109 (L), 4×109 (M) and 20×109 (H) CFU/kg feed of B. subtilis KN-42. During the overall period, average daily gain and feed efficiency of piglets were higher in groups PC, M, and H than those in group NC (p<0.05), and all probiotics and antibiotics groups had a lower diarrhea index than group NC (p<0.05). The 16S rDNA gene-based methods were used to analyze faecal bacterial flora on day 28 of experiment. The result of denaturing gradient gel electrophoresis analysis showed that supplementation of B. subtilis KN-42 to the diet changed the bacterial communities, with a higher bacterial diversity and band number in group M than in the other four groups. Real-time polymerase chain reaction analysis showed that the relative number of Lactobacillus were higher in groups PC and H than in group NC (p<0.05), and the supplemented B. subtilis KN-42 to the diet also reduced the relative number of E. coli (p<0.05). These results suggest that dietary addition of B. subtilis KN-42 can improve the growth performance and gastrointestinal health of piglets.
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Affiliation(s)
- Yuanliang Hu
- College of Life Sciences, Hubei Normal University, Huangshi, Hubei 435002, China
| | - Yaohao Dun
- College of Life Sciences, Hubei Normal University, Huangshi, Hubei 435002, China
| | - Shenao Li
- College of Life Sciences, Hubei Normal University, Huangshi, Hubei 435002, China
| | - Shumiao Zhao
- College of Life Sciences, Hubei Normal University, Huangshi, Hubei 435002, China
| | - Nan Peng
- College of Life Sciences, Hubei Normal University, Huangshi, Hubei 435002, China
| | - Yunxiang Liang
- College of Life Sciences, Hubei Normal University, Huangshi, Hubei 435002, China
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Rodklongtan A, La-ongkham O, Nitisinprasert S, Chitprasert P. Enhancement of Lactobacillus reuteri KUB-AC5 survival in broiler gastrointestinal tract by microencapsulation with alginate-chitosan semi-interpenetrating polymer networks. J Appl Microbiol 2014; 117:227-38. [PMID: 24712513 DOI: 10.1111/jam.12517] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Revised: 03/31/2014] [Accepted: 04/01/2014] [Indexed: 12/17/2022]
Abstract
AIMS To evaluate an alginate-chitosan microcapsule for an intestinal probiotic delivery system for broilers. METHODS AND RESULTS Lactobacillus reuteri KUB-AC5 was successfully microencapsulated with alginate and chitosan mixtures using an emulsion cross-linking method with high microencapsulation efficiency. Scanning electron microscopy revealed a large number of the bacteria entrapped in the semi-interpenetrating network. The microcapsule effectively protected the cells against strong acids. The in vitro study showed that the 8 log CFU g(-1) was released at the jejunum and ileum. For the in vivo study, the number of probiotics was detected by a polymerase chain reaction-based random amplified polymorphic DNA technique. From provision of 10 log CFU, cell numbers of 5-8 log CFU were observed in the intestine. CONCLUSIONS The alginate-chitosan microcapsule can serve as a potential intestine-targeted probiotic delivery system. SIGNIFICANCE AND IMPACTS OF THE STUDY To the best of our knowledge, this is the first comparison study of the in vitro and in vivo gastrointestinal profiles of microencapsulated probiotics used as feed additives for broilers. This study reveals the similarities and differences of the in vitro and in vivo probiotic profiles and provides convincing evidence of the potential use of the alginate-chitosan microcapsule as a probiotic delivery system.
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Affiliation(s)
- A Rodklongtan
- Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, Bangkok, Thailand
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