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Sun C, Wang Z, Li Y, Huang J. Antibiotic resistance spectrums of Escherichia coli and Enterococcus spp. strains against commonly used antimicrobials from commercial meat-rabbit farms in Chengdu City, Southwest China. Front Vet Sci 2024; 11:1369655. [PMID: 38756516 PMCID: PMC11096573 DOI: 10.3389/fvets.2024.1369655] [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: 01/12/2024] [Accepted: 04/12/2024] [Indexed: 05/18/2024] Open
Abstract
Antimicrobial resistance (AMR) is commonly associated with the inappropriate use of antibiotics during meat-rabbit production, posing unpredictable risks to rabbit welfare and public health. However, there is limited research on the epidemiological dynamics of antibiotic resistance among bacteria indicators derived from local healthy meat-rabbits. To bridge the knowledge gap between antibiotic use and AMR distribution, a total of 75 Escherichia coli (E. coli) and 210 Enterococcus spp. strains were successfully recovered from fecal samples of healthy meat-rabbits. The results revealed that diverse AMR phenotypes against seven commonly used antimicrobials, including ampicillin (AMP), amoxicillin-clavulanic acid (A/C), doxycycline (DOX), enrofloxacin (ENR), florfenicol (FFC), gentamicin (GEN), and polymycin B (PMB), were observed among most strains of E. coli and Enterococcus spp. in two rabbit farms, although the distribution pattern of antibiotic resistance between young and adult rabbits was similar. Among them, 66 E. coli strains showed resistance against 6 antimicrobials except for PMB. However, 164 Enterococcus spp. strains only exhibited acquired resistance against DOX and GEN. Notably, the DOX-based AMR phenotypes for E. coli and Enterococcus spp. strains were predominant, indicating the existing environmental stress conferred by DOX exposure. The MICs tests suggested elevated level of antibiotic resistance for resistant bacteria. Unexpectedly, all GEN-resistant Enterococcus spp. strains resistant high-level gentamicin (HLGR). By comparison, the blaTEM, tetA, qnrS and floR were highly detected among 35 multi-resistant E. coli strains, and aac[6']-Ie-aph[2']-Ia genes widely spread among the 40 double-resistant Enterococcus spp. strains. Nevertheless, the presence of ARGs were not concordant with the resistant phenotypes for a portion of resistant bacteria. In conclusion, the distribution of AMR and ARGs are prevalent in healthy meat-rabbits, and the therapeutic antimicrobials use in farming practice may promote the antibiotic resistance transmission among indicator bacteria. Therefore, periodic surveillance of antibiotic resistance in geographic locations and supervisory measures for rational antibiotic use are imperative strategies for combating the rising threats posed by antibiotic resistance, as well as maintaining rabbit welfare and public health.
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Affiliation(s)
- Chen Sun
- College of Animal Husbandary and Veterinary Medicine, Southwest Minzu University, Chengdu, China
| | - Ziye Wang
- College of Animal Husbandary and Veterinary Medicine, Southwest Minzu University, Chengdu, China
| | - Yan Li
- College of Animal Husbandary and Veterinary Medicine, Southwest Minzu University, Chengdu, China
- Institute of Qinhai-Tibetan Plateau, Southwest Minzu University, Chengdu, China
| | - Jian Huang
- College of Animal Husbandary and Veterinary Medicine, Southwest Minzu University, Chengdu, China
- Institute of Qinhai-Tibetan Plateau, Southwest Minzu University, Chengdu, China
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Xia M, LI C, Wu D, Wu F, Kong L, Jia Z, Han W, Chen S, Fang W, Liu Y, Chen B. Benefits of heat-killed Lactobacillus acidophilus on growth performance, nutrient digestibility, antioxidant status, immunity, and cecal microbiota of rabbits. Front Vet Sci 2024; 11:1361908. [PMID: 38496307 PMCID: PMC10941762 DOI: 10.3389/fvets.2024.1361908] [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: 12/27/2023] [Accepted: 02/21/2024] [Indexed: 03/19/2024] Open
Abstract
Introduction Heat-killed probiotics, as a type of inactivated beneficial microorganisms, possess an extended shelf life and broader adaptability compared to their live counterparts. This study aimed to investigate the impact of heat-killed Lactobacillus acidophilus (L. acidophilus, LA) - a deactivated probiotic on the growth performance, digestibility, antioxidant status, immunity and cecal microbiota of rabbits. Methods Two hundred weaned Hyla rabbits were randomly allocated into five equal groups (CON, L200, L400, L600, and L800). Over a 28-day period, the rabbits were fed basal diets supplemented with 0, 200, 400, 600, and 800 mg/kg of heat-killed LA, respectively. Results Results revealed a significant reduction in the feed-to-gain ratio (F/G) in the L600 and L800 groups (p < 0.05). Additionally, the L800 group exhibited significantly higher apparent digestibility of crude fiber (CF) and crude protein (CP) (p < 0.05). Regarding digestive enzyme activities, enhanced trypsin and fibrinase activities were observed in the L600 and L800 groups (p < 0.05). Concerning the regulation of the body's antioxidant status, the L800 group demonstrated elevated levels of superoxide dismutase (SOD) and total antioxidant capacity (T-AOC) in both serum and ileal tissue (p < 0.05). In terms of immune capacity modulation, serum tumor necrosis factor-α (TNF-α) levels were significantly lower in the L600 and L800 groups (p < 0.05), while immunoglobulin A (IgA) and immunoglobulin M (IgM) levels were higher (p < 0.05). Additionally, the L800 group exhibited a substantial increase in secretory immunoglobulin A (SIgA) levels in the intestinal mucosa (p < 0.05). In comparison to the CON group, the L800 group exhibited a significant increase in the relative abundance of Phascolarctobacterium and Alistipes in the cecum (p < 0.05). Phascolarctobacterium demonstrated a positive correlation with SIgA (p < 0.05), IgM (p < 0.01), and Glutathione peroxidase (GSH-Px) (p < 0.05), while displaying a negative correlation with TNF-α levels (p < 0.05). Concurrently, Alistipes exhibited positive correlations with IgA (p < 0.05), IgM (p < 0.05), SIgA (p < 0.01), GSH-Px (p < 0.05), SOD (p < 0.05), and T-AOC (p < 0.01), and a negative correlation with TNF-α (p < 0.05). Discussion In conclusion, the dietary incorporation of 600 mg/kg and 800 mg/kg of heat-killed LA positively influenced the growth performance, nutrient digestibility, antioxidant status, immune capacity and cecal microbiota of rabbits. This highlights the potential benefits of utilizing heat-killed probiotics in animal nutrition.
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Affiliation(s)
- Miao Xia
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
| | - Chong LI
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Diange Wu
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Fengyang Wu
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Lingchang Kong
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
| | - Zifan Jia
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
| | - Wenxiao Han
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
| | - Saijuan Chen
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
- Agricultural Technology Innovation Center in Mountainous Areas of Hebei Province, Baoding, China
| | - Wei Fang
- Biosource Biotechnology Co., Ltd., Shenzhen, China
| | - Yajuan Liu
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
| | - Baojiang Chen
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
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Kong F, Wu F, Liu Y, Lai N, Wang G, Shen S, Han S, Li B, Zhi Y, Chen S, Chen B. Effects of enzymolytic soybean meal on the growth performance, digestive enzyme activity, some serum indexes, carcase performance and meat quality of Rex rabbits. ITALIAN JOURNAL OF ANIMAL SCIENCE 2022. [DOI: 10.1080/1828051x.2022.2109521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Fangen Kong
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
| | - Fengyang Wu
- College of Food Science and Technology, Hebei Agricultural University, Baoding, China
| | - Yanhua Liu
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Ningjie Lai
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
- Agricultural Technology Innovation Center in Mountainous Areas of Hebei Province, Baoding, China
| | - Guozhou Wang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
| | - Shuaifeng Shen
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Shuaijuan Han
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Bin Li
- Qinhuangdao Qihao Biotechnology Co., Ltd, Qinhuangdao, China
| | - Yongwei Zhi
- Inner Mongolia Dongda Biotechnology Co., Ltd, Ordos, China
| | - Saijuan Chen
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
- Agricultural Technology Innovation Center in Mountainous Areas of Hebei Province, Baoding, China
| | - Baojiang Chen
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
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Kong F, Liu T, Liu Y, Yu Z, Zhang W, Fan D, Fan J, Kong L, Li B, Chen S, Chen B. Dietary effects of enzymolytic soybean meal inclusion on antioxidant capacity, intestinal morphology and caecal microbiota of Rex rabbits. ITALIAN JOURNAL OF ANIMAL SCIENCE 2022. [DOI: 10.1080/1828051x.2022.2104177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Fangen Kong
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
| | - Tao Liu
- College of Veterinary Medicine, Hebei Agricultural University, Baoding, China
| | - Yajuan Liu
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
- Agricultural Technology Innovation Center in Mountainous Areas of Hebei Province, Baoding, China
| | - Zhikai Yu
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Wei Zhang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
| | - Dongfeng Fan
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
| | - Jiaqi Fan
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Lingchang Kong
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
| | - Bin Li
- Qinhuangdao Qihao Biotechnology Co., Ltd., Qinhuangdao, China
| | - Saijuan Chen
- Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, China
- Agricultural Technology Innovation Center in Mountainous Areas of Hebei Province, Baoding, China
| | - Baojiang Chen
- College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
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Mora M, Velasco-Galilea M, Sánchez JP, Ramayo-Caldas Y, Piles M. Disentangling the causal relationship between rabbit growth and cecal microbiota through structural equation models. Genet Sel Evol 2022; 54:81. [PMID: 36536288 PMCID: PMC9762025 DOI: 10.1186/s12711-022-00770-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 11/28/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND The effect of the cecal microbiome on growth of rabbits that were fed under different regimes has been studied previously. However, the term "effect" carries a causal meaning that can be confounded because of potential genetic associations between the microbiome and production traits. Structural equation models (SEM) can help disentangle such a complex interplay by decomposing the effect on a production trait into direct host genetics effects and indirect host genetic effects that are exerted through microbiota effects. These indirect effects can be estimated via structural coefficients that measure the effect of the microbiota on growth while the effects of the host genetics are kept constant. In this study, we applied the SEM approach to infer causal relationships between the cecal microbiota and growth of rabbits fed under ad libitum (ADGAL) or restricted feeding (ADGR). RESULTS We identified structural coefficients that are statistically different from 0 for 138 of the 946 operational taxonomic units (OTU) analyzed. However, only 15 and 38 of these 138 OTU had an effect greater than 0.2 phenotypic standard deviations (SD) on ADGAL and ADGR, respectively. Many of these OTU had a negative effect on both traits. The largest effects on ADGR were exerted by an OTU that is taxonomically assigned to the Desulfovibrio genus (- 1.929 g/d, CSS-normalized OTU units) and by an OTU that belongs to the Ruminococcaceae family (1.859 g/d, CSS-normalized OTU units). For ADGAL, the largest effect was from OTU that belong to the S24-7 family (- 1.907 g/d, CSS-normalized OTU units). In general, OTU that had a substantial effect had low to moderate estimates of heritability. CONCLUSIONS Disentangling how direct and indirect effects act on production traits is relevant to fully describe the processes of mediation but also to understand how these traits change before considering the application of an external intervention aimed at changing a given microbial composition by blocking/promoting the presence of a particular microorganism.
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Affiliation(s)
- Mónica Mora
- Institute of Agrifood Research and Technology (IRTA)-Animal Breeding and Genetics, Caldes de Montbui, Barcelona Spain
| | - María Velasco-Galilea
- Institute of Agrifood Research and Technology (IRTA)-Animal Breeding and Genetics, Caldes de Montbui, Barcelona Spain ,Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Cerdanyola del Vallès, Barcelona Spain
| | - Juan Pablo Sánchez
- Institute of Agrifood Research and Technology (IRTA)-Animal Breeding and Genetics, Caldes de Montbui, Barcelona Spain
| | - Yuliaxis Ramayo-Caldas
- Institute of Agrifood Research and Technology (IRTA)-Animal Breeding and Genetics, Caldes de Montbui, Barcelona Spain
| | - Miriam Piles
- Institute of Agrifood Research and Technology (IRTA)-Animal Breeding and Genetics, Caldes de Montbui, Barcelona Spain
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Montoro-Dasi L, Lorenzo-Rebenaque L, Ramon-Moragues A, Pérez-Gracia MT, de Toro M, Marin C, Villagra A. Antibiotic removal does not affect cecal microbiota balance and productive parameters in LP robust rabbit line. Front Vet Sci 2022; 9:1038218. [DOI: 10.3389/fvets.2022.1038218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 10/21/2022] [Indexed: 11/09/2022] Open
Abstract
Antimicrobial resistance is an important threat to public health worldwide, being one of the main death causes in 2050. Moreover, global health is currently underpinned by the “One Health” concept, whereby livestock is strictly related to human and environmental health. However, in the case of the meat rabbit industry, antibiotic additives are still added to prevent gastrointestinal diseases. Current food and consumer awareness require the implementation of sustainable production systems, where robustness and resilience are increasingly important. Hence, the aim of this study was to evaluate the effect of antibiotic feed supplementation on microbiota, and productive performance during the rabbit growing period in a robust genetic line. For this purpose, a total of 432 weaned rabbits were randomly housed, cecum samples were taken on the weaning day and at the end of the growing period (28 and 61 days of age, respectively), and 16S rRNA sequencing analysis was performed. Results showed a higher microbiota complexity at the end of growing in both experimental groups. Firmicutes represented the dominant phylum of the cecal community, followed by Bacteroidota in both groups. Moreover, Victivallis and Escherichia-Shigella genera were only identified in the experimental group without antibiotic supplementation at the end of the growing period. In conclusion, antibiotic feed supplementation had no effect on microbiota composition and productive performance in the robust genetic line reared. These results evidence the importance of the development of rabbit robust genetic lines as an alternative tool to antibiotic administration in epizootic enteropathy control.
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Velasco-Galilea M, Piles M, Ramayo-Caldas Y, Varona L, Sánchez JP. Use of Bayes factors to evaluate the effects of host genetics, litter and cage on the rabbit cecal microbiota. Genet Sel Evol 2022; 54:46. [PMID: 35761200 PMCID: PMC9235133 DOI: 10.1186/s12711-022-00738-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 06/17/2022] [Indexed: 11/13/2022] Open
Abstract
Background The rabbit cecum hosts and interacts with a complex microbial ecosystem that contributes to the variation of traits of economic interest. Although the influence of host genetics on microbial diversity and specific microbial taxa has been studied in several species (e.g., humans, pigs, or cattle), it has not been investigated in rabbits. Using a Bayes factor approach, the aim of this study was to dissect the effects of host genetics, litter and cage on 984 microbial traits that are representative of the rabbit microbiota. Results Analysis of 16S rDNA sequences of cecal microbiota from 425 rabbits resulted in the relative abundances of 29 genera, 951 operational taxonomic units (OTU), and four microbial alpha-diversity indices. Each of these microbial traits was adjusted with mixed linear and zero-inflated Poisson (ZIP) models, which all included additive genetic, litter and cage effects, and body weight at weaning and batch as systematic factors. The marginal posterior distributions of the model parameters were estimated using MCMC Bayesian procedures. The deviance information criterion (DIC) was used for model comparison regarding the statistical distribution of the data (normal or ZIP), and the Bayes factor was computed as a measure of the strength of evidence in favor of the host genetics, litter, and cage effects on microbial traits. According to DIC, all microbial traits were better adjusted with the linear model except for the OTU present in less than 10% of the animals, and for 25 of the 43 OTU with a frequency between 10 and 25%. On a global scale, the Bayes factor revealed substantial evidence in favor of the genetic control of the number of observed OTU and Shannon indices. At the taxon-specific level, significant proportions of the OTU and relative abundances of genera were influenced by additive genetic, litter, and cage effects. Several members of the genera Bacteroides and Parabacteroides were strongly influenced by the host genetics and nursing environment, whereas the family S24-7 and the genus Ruminococcus were strongly influenced by cage effects. Conclusions This study demonstrates that host genetics shapes the overall rabbit cecal microbial diversity and that a significant proportion of the taxa is influenced either by host genetics or environmental factors, such as litter and/or cage. Supplementary Information The online version contains supplementary material available at 10.1186/s12711-022-00738-2.
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Affiliation(s)
- María Velasco-Galilea
- Institute of Agrifood Research and Technology (IRTA)-Animal Breeding and Genetics, Caldes de Montbui, Barcelona, Spain. .,Centre for Research in Agricultural Genomics (CRAG), CSIC-IRTA-UAB-UB, Bellaterra, Barcelona, Spain.
| | - Miriam Piles
- Institute of Agrifood Research and Technology (IRTA)-Animal Breeding and Genetics, Caldes de Montbui, Barcelona, Spain
| | - Yuliaxis Ramayo-Caldas
- Institute of Agrifood Research and Technology (IRTA)-Animal Breeding and Genetics, Caldes de Montbui, Barcelona, Spain
| | - Luis Varona
- Veterinary Faculty, University of Zaragoza, Saragossa, Spain
| | - Juan Pablo Sánchez
- Institute of Agrifood Research and Technology (IRTA)-Animal Breeding and Genetics, Caldes de Montbui, Barcelona, Spain
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Dai X, Chen L, Liu M, Liu Y, Jiang S, Xu T, Wang A, Yang S, Wei W. Effect of 6-Methoxybenzoxazolinone on the Cecal Microbiota of Adult Male Brandt's Vole. Front Microbiol 2022; 13:847073. [PMID: 35422782 PMCID: PMC9002351 DOI: 10.3389/fmicb.2022.847073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Accepted: 02/28/2022] [Indexed: 11/28/2022] Open
Abstract
The anti-microbial effects of plant secondary metabolite (PSM) 6-methoxybenzoxazolinone (6-MBOA) have been overlooked. This study investigated the effect of 6-MBOA on the cecal microbiota of adult male Brandt’s voles (Lasiopodomys brandtii), to evaluate its effect on the physiology of mammalian herbivores. The growth of voles was inhibited by 6-MBOA. A low dose of 6-MBOA enhanced the observed species, as well as the Chao1 and abundance-based coverage estimator (ACE) indices and introduced changes in the structure of cecal microbiota. The abundance of the phylum Tenericutes, classes Mollicutes and Negativicutes, order Selenomonadales, families Ruminococcaceae and Veillonellaceae, genera Quinella, Caproiciproducens, Anaerofilum, Harryflintia, and unidentified Spirochaetaceae in the cecal microbiota was enhanced upon administration of a low dose of 6-MBOA, which also inhibited glucose metabolism and protein digestion and absorption in the cecal microbiota. 6-MBOA treatment also stimulated butyrate production and dose-dependently enhanced the metabolism of xenobiotics in the cecal microbiome. Our findings indicate that 6-MBOA can affect Brandt’s voles by inducing changes in the abundance of cecal bacteria, thereby, altering the contents of short-chain fatty acids (SCFAs) and pathway intermediates, ultimately inhibiting the growth of voles. Our research suggests that 6-MBOA could potentially act as a digestion-inhibiting PSM in the interaction between mammalian herbivores and plants.
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Affiliation(s)
- Xin Dai
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
| | - Lin Chen
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
| | - Mengyue Liu
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
| | - Ying Liu
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
| | - Siqi Jiang
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
| | - Tingting Xu
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
| | - Aiqin Wang
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
| | - Shengmei Yang
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China
| | - Wanhong Wei
- College of Bioscience and Biotechnology, Yangzhou University, Yangzhou, China.,Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou, China
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Liu B, Cui Y, Ali Q, Zhu X, Li D, Ma S, Wang Z, Wang C, Shi Y. Gut Microbiota Modulate Rabbit Meat Quality in Response to Dietary Fiber. Front Nutr 2022; 9:849429. [PMID: 35392295 PMCID: PMC8982513 DOI: 10.3389/fnut.2022.849429] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 02/15/2022] [Indexed: 12/25/2022] Open
Abstract
Antibiotics are widely used in gastrointestinal diseases in meat rabbit breeding, which causes safety problems for meat products. Dietary fiber can regulate the gut microbiota of meat rabbits, but the mechanism of improving meat quality is largely unknown. The objective of this study was to evaluate the effects of adding different fiber sources to rabbit diets on the growth performance, gut microbiota composition, and muscle metabolite composition of meat rabbits. A total of 18 New Zealand white rabbits of similar weight (40 ± 1 day old) were randomly assigned to beet pulp treatment (BP), alfalfa meal treatment (AM), and peanut vine treatment (PV). There were 6 repeats in each treatment and all were raised in a single cage. The predictive period was 7 days and the experimental period was 40 days. The results revealed that AM and PV supplementation increased growth performance, slaughter performance, and intestinal development of meat rabbits compared with the BP treatment, and especially the effect of AM treatment was better. The content of butyric acid was increased in PV and AM treatments compared with the BP treatment. The expression of mitochondrial biosynthesis genes of liver, cecum, and muscle showed that AM treatment increased gene expression of CPT1b compared to the BP treatment. In addition, AM and PV treatments significantly increased the microbial diversity and richness compared with BP treatment, and their bacterial community composition was similar, and there were some differences between AM and PV treatments and BP treatment. Metabonomics analysis of muscle showed that AM treatment significantly increased amino acid and fatty acid metabolites compared with BP treatment, which were mainly concentrated in energy metabolism, amino acid metabolism, and fatty acid regulation pathways. Furthermore, through correlation analysis, it was found that there was a significant correlation between rumenococci in the cecum and amino acid metabolites in the muscle. Overall, these findings indicate that AM may affect the body's health by changing its gut microbiota, and then improving meat quality, and the intestinal–muscle axis provides a theoretical basis.
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Affiliation(s)
- Boshuai Liu
- The College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
| | - Yalei Cui
- The College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou, China
- Henan Forage Engineering Technology Research Center, Zhengzhou, China
| | - Qasim Ali
- The College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou, China
- Henan Forage Engineering Technology Research Center, Zhengzhou, China
| | - Xiaoyan Zhu
- The College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou, China
- Henan Forage Engineering Technology Research Center, Zhengzhou, China
| | - Defeng Li
- The College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou, China
- Henan Forage Engineering Technology Research Center, Zhengzhou, China
| | - Sen Ma
- The College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou, China
- Henan Forage Engineering Technology Research Center, Zhengzhou, China
| | - Zhichang Wang
- The College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou, China
- Henan Forage Engineering Technology Research Center, Zhengzhou, China
| | - Chengzhang Wang
- The College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou, China
- Henan Forage Engineering Technology Research Center, Zhengzhou, China
| | - Yinghua Shi
- The College of Animal Science and Technology, Henan Agricultural University, Zhengzhou, China
- Henan Key Laboratory of Innovation and Utilization of Grassland Resources, Zhengzhou, China
- Henan Forage Engineering Technology Research Center, Zhengzhou, China
- *Correspondence: Yinghua Shi
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Could Dietary Supplementation with Different Sources of N-3 Polyunsaturated Fatty Acids Modify the Rabbit Gut Microbiota? Antibiotics (Basel) 2022; 11:antibiotics11020227. [PMID: 35203829 PMCID: PMC8868100 DOI: 10.3390/antibiotics11020227] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/05/2022] [Accepted: 02/08/2022] [Indexed: 11/22/2022] Open
Abstract
The present study evaluated the effects of feed supplemented with two dietary sources of n-3 polyunsaturated fatty acids (PUFAs; fish oil and extruded flaxseed) on the gut microbiota, caecal fermentations, gastrointestinal histology, and histochemistry in rabbits. Fifteen male New Zealand White rabbits were divided into three groups (n = 5/group) and fed with different diets from weaning (35 days of age) until slaughtering (90 days of age): C group, fed with a commercial diet; F group, supplemented with 10% of extruded flaxseed; and O group, supplemented with 3.5% of fish oil. At slaughter, the content of the stomach, duodenum, jejunum, ileum, caecum, and colon was collected and analyzed by Next Generation 16S rRNA gene sequencing. Tissue samples of the same tracts were evaluated with histological and histochemical analysis. Ammonia and lactic acid in the caecum were also quantified. Twenty-nine operational taxonomic units (OTUs) were significantly different between groups. Groups receiving n-3 PUFAs supplementation showed an increase in Bacteroidetes and Lachnospiraceae in several gastrointestinal tracts, while Bacilli abundance, as well as Firmicutes/Bacteroidetes ratio, were reduced compared to the control group (for all p < 0.05). Caecal ammonia was lower in the F than C group (p < 0.032), whereas no difference was found for lactic acid. Finally, histological evaluations revealed a mild hemorrhagic infiltration and vessels ectasia in the stomach mucosa of both F and O groups, but no effect of nutritional treatment was evidenced by the histochemical analyses. In conclusion, n-3 PUFAs supplementation could modify the rabbit gut microbiota and fermentation. The increase in beneficial bacterial populations may, at least partially, explain the positive effects of n-3 PUFAs diet supplementation on human and animals’ health, although the appropriate dosage should be established.
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Liang H, Cai R, Li C, Glendon OHM, Chengcheng H, Yan H. High-throughput sequencing of 16S rRNA gene analysis reveals novel taxonomic diversity among vaginal microbiota in healthy and affected sows with endometritis. Res Vet Sci 2021; 143:33-40. [PMID: 34971899 DOI: 10.1016/j.rvsc.2021.12.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 10/24/2021] [Accepted: 12/01/2021] [Indexed: 12/31/2022]
Abstract
In sows afflicted with endometritis, vaginal microbiota can provide valuable information regarding bacterial community diversity. Our aim was to compare the vaginal microbiotas between endometritis and healthy sows and characterize the vaginal microbiota of endometritis sows using high-throughput sequencing of the 16S rRNA gene. Vaginal swabs were collected from healthy (Healthy_A, n = 10; Healthy_B, n = 10) and diseased (Endometritis_A, n = 10; Endometritis_B, n = 10) sows from two swine farms located in Guangdong and Yunnan province, in Southern China. The results of V3-V4 region of the 16S rRNA gene showed that Corynebacterium_1, Clostridium_sensu_stricto_1, Porphyromonas, Anaerococcus, Streptococcus, and Bacteroides comprised the core microbiota in all healthy sows. Two type of endometritis microbiota patterns were presented in two farms: the first comprised mostly of Burkholderia in farm A and the second comprised of Parvimonas in farm B. In farm A, the percentages of Burkholderia, Serratia, and Enterobacter were higher in the endometritis group, while only Parvimonas was significantly increased in the endometritis group in farm B (p < 0.05). Interestingly, the genus Burkholderia and Serratia were found only in the endometritis sows from farm A. Burkholderia was the most dominant genus found in endometritis sows and was confirmed by full-length 16S rRNA analysis using PacBio sequencing.
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Affiliation(s)
- Huixian Liang
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China.
| | - Rujian Cai
- Institute of Animal Health Guangdong Academy of Agricultural Sciences, Guangzhou 510640, Guangdong, China; Guangdong Provincial Key Laboratory of Livestock Disease Prevention, Guangzhou, China; Guangdong Open Laboratory of Veterinary Public Health, Guangzhou, China.
| | - Chunling Li
- Institute of Animal Health Guangdong Academy of Agricultural Sciences, Guangzhou 510640, Guangdong, China; Guangdong Provincial Key Laboratory of Livestock Disease Prevention, Guangzhou, China; Guangdong Open Laboratory of Veterinary Public Health, Guangzhou, China.
| | - Ong Hong Ming Glendon
- Sino-Singapore International Joint Research Institute (SSIJRI), Guangzhou 510000, China; School of Chemical and Biomedical Engineering, Nanyang Technological University, Block N1.2, B3-15, 62 Nanyang Drive, 637459, Singapore
| | - Hu Chengcheng
- Sino-Singapore International Joint Research Institute (SSIJRI), Guangzhou 510000, China; Singapore Institute of Manufacturing Technology, 2 Fusionopolis Way, #08-04, Innovis, Singapore 138634
| | - He Yan
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China.
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Velasco-Galilea M, Piles M, Ramayo-Caldas Y, Sánchez JP. The value of gut microbiota to predict feed efficiency and growth of rabbits under different feeding regimes. Sci Rep 2021; 11:19495. [PMID: 34593949 PMCID: PMC8484599 DOI: 10.1038/s41598-021-99028-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 09/13/2021] [Indexed: 02/08/2023] Open
Abstract
Gut microbiota plays an important role in nutrient absorption and could impact rabbit feed efficiency. This study aims at investigating such impact by evaluating the value added by microbial information for predicting individual growth and cage phenotypes related to feed efficiency. The dataset comprised individual average daily gain and cage-average daily feed intake from 425 meat rabbits, in which cecal microbiota was assessed, and their cage mates. Despite microbiota was not measured in all animals, consideration of pedigree relationships with mixed models allowed the study of cage-average traits. The inclusion of microbial information into certain mixed models increased their predictive ability up to 20% and 46% for cage-average feed efficiency and individual growth traits, respectively. These gains were associated with large microbiability estimates and with reductions in the heritability estimates. However, large microbiabililty estimates were also obtained with certain models but without any improvement in their predictive ability. A large proportion of OTUs seems to be responsible for the prediction improvement in growth and feed efficiency traits, although specific OTUs taxonomically assigned to 5 different phyla have a higher weight. Rabbit growth and feed efficiency are influenced by host cecal microbiota, thus considering microbial information in models improves the prediction of these complex phenotypes.
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Affiliation(s)
- María Velasco-Galilea
- grid.8581.40000 0001 1943 6646Animal Breeding and Genetics, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, 08140 Barcelona, Spain
| | - Miriam Piles
- grid.8581.40000 0001 1943 6646Animal Breeding and Genetics, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, 08140 Barcelona, Spain
| | - Yuliaxis Ramayo-Caldas
- grid.8581.40000 0001 1943 6646Animal Breeding and Genetics, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, 08140 Barcelona, Spain
| | - Juan P. Sánchez
- grid.8581.40000 0001 1943 6646Animal Breeding and Genetics, Institute of Agrifood Research and Technology (IRTA), Caldes de Montbui, 08140 Barcelona, Spain
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