Abstract With the increased demand for lightly preserved and/or ready‐to‐eat (RTE) food products, prevalence of foodborne pathogen Listeria monocytogenes has increased, which is a public health concern. The goal this review to discuss incidence, epidemiological importance, and contamination routes L. in various aquatic ecosystems, seafood processing environments summarize data obtained since 1990s. primarily enters food‐production chain by cross‐contamination production plants, making major...

Increasing evidence shows that the chicken gastrointestinal microbiota has a major effect on modulation of metabolic functions and is correlated with economic parameters, such as feed efficiency health. Some these effects derive from capacity to digest carbohydrates produce energy-rich metabolites short-chain fatty acids (SCFA) host-microbe interactions. In this study, we utilized information metagenomic assembled genomes (MAGs) tract (GIT) samples, detailed annotation carbohydrate-active...

The intestinal microbiota of piglets fed with a Control diet low in dietary fibre and modified wheat bran variants as an additional source insoluble was characterised. In this context, variances the three different gut segments were assessed. Wheat either included its native form or by fermentation extrusion before added at 150 g/kg to basal for 48 (12 animals per treatment). Total DNA extracted from digesta samples jejunum, end ileum colon ascendens. Samples prepared accordingly subsequent...

Abstract In this study, shotgun metagenomics was employed to monitor the effect of oxytetracycline, administered at a therapeutic dose, on dynamics microbiota and resistome in feces weaned pigs. Sixteen weaning pigs were assigned one two treatments including standard starter diet for 21 days or antibiotic-supplemented (10 g oxytetracycline/100 kg body weight/day) 7 days, followed by 14 diet. Feces collected from 0, 8, profiling. Pigs receiving oxytetracycline exhibited significantly greater...

Summary Lactic acid bacteria are characterized as gram-positive, usually non-motile, non-sporulating that produce lactic a major or sole product of their fermentative metabolism. In this study, the presence lactobacilli were investigated in intestines beluga (Huso huso) and Persian sturgeon (Acipenser persicus), inhabiting Caspian sea. The obtained data showed various species populations found at high levels fishes. Total number was about 10 5.3 6.4 cfu/g intestinal content for sturgeon,...

Understanding the roles of microorganisms in animal gastrointestinal microenvironment is highly important for development effective strategies to manage and manipulate these microbial communities. In order guide future gut microbiota research projects standardization efforts, we have conducted a systematic comparison 10 currently used sample preservation DNA extraction approaches pig chicken samples quantified their effects on bacterial yield, quality, integrity, resulting sequence-based...

The impact of the Fusarium-derived metabolites beauvericin, enniatin B and B1 (EB) alone or in combination with deoxynivalenol (DON) was investigated 28-29 days old weaning piglets over a time period 14 days. co-application EB DON (EB + DON) led to significant decrease weight gain animals. Liver enzyme activities plasma were significantly decreased at day receiving DON-containing diet compared control diet. All mycotoxin-contaminated diets moderate severe histological lesions jejunum, liver...

Fluoroquinolone agents are considered critical for human medicine by the World Health Organization (WHO). However, they often used treatment of avian colibacillosis in poultry production, creating considerable concern regarding potential spread fluoroquinolone resistance genes from commensals to pathogens. Therefore, there is a need understand impact application on reservoir ARGs gut and devise means circumvent resistome expansion. Building upon recent dose optimization effort, we shotgun...

The emergence of resistance against common antibiotics in the gut microbiota is a major issue for both human and livestock health. This highlights need understanding impact such application on reservoir antibiotic genes poultry devising means to circumvent potential resistome expansion. Phytogenic feed additives (PFAs) are natural alternative improve animal health performance, supposedly via positively affecting microbial ecosystem, but there little systematic information available. In this...

A Gram-stain-negative, mesophilic bacterial strain, designated SBU1T, which degrades polycyclic aromatic hydrocarbons was isolated from the sediments of mangrove forests Nayband Bay in Iranian Persian Gulf during a bioremediation experiment. The 16S rRNA gene sequence strain SBU1T exhibited highest similarities with Celeribacter indicus P73T (98.52%) and neptunius H 14T (97.05%). Phylogenetic analysis, based on sequences, demonstrated that fell within cluster consisting type strains species...

The aim of this study was to examine the effects water pH changes on certain hematological parameters fingerlings common carp ( Cyprinus carpio ), in with different (acidic and alkaline). Fingerlings were subjected acidic (pH 5.5 6.5) alkaline 8.0, 8.5 9.0) for 21 days. Control groups maintained at neutral pH. result showed that exposure both exerted stress fish considerably affected hematology carp. Cytological revealed such swollen erythrocytes centrally located nucleus also immature...

In-feed antibiotic growth promoters (AGPs) have been a cornerstone in the livestock industry due to their role enhancing and feed efficiency. However, concerns over resistance driven shift away from AGPs toward natural alternatives. Despite widespread use, exact mechanisms of alternatives are not fully understood. This necessitates holistic studies that investigate microbiota dynamics, host responses, interactions between these elements context alternative additives.

A total of 1,436,000 Ross 380 AP broiler chicks were included in the experiment, which was conducted two cycles with 20 houses per cycle and 35,900 birds house. The objective to evaluate, under field conditions, impact a precision biotic (PB) on growth performance cecal microbiome chickens, comparison enzymatically hydrolyzed yeast (EHY) butyrate (BT) an antibiotic-free diet. Each consisted six (6) PB supplementation, 14 regular dietary program used by integration. Body weight (BW), feed...

Abstract With an area of 390 hectares, the mangrove forests Nayband Bay are widest communities above 27 degrees latitude in Persian Gulf. They last dense, extensive structures these ecosystems found north-west Indian Ocean. Growing industrial activities near and consequent marine pollution has resulted damage threatened different habitats recent years. To date, a comprehensive description microbial life ecosystem that been exposed to oil contamination is lacking. This information could...

Background There is growing interest in understanding gut microbiome dynamics, to increase the sustainability of livestock production systems and better understand dynamics that regulate antibiotic resistance genes ( i.e. , resistome). High-throughput sequencing RNA transcripts (RNA-seq) from microbial communities (metatranscriptome) allows an unprecedented opportunity analyze functional taxonomical expressed emerges as a highly informative approach. However, isolation preservation...

Abstract The antiquity, diversity and dietary variations among fish species present an exceptional opportunity for understanding the variety nature of symbioses in vertebrate gut microbial communities. In this study first time composition bacterial communities anjak was surveyed by 16S rRNA gene 454-pyrosequencing. Anjak ( Schizocypris altidorsalis ), is a native benthopelagic commercially important Hamun Lake Hirmand River system Sistan basin, Iran. Thirteen PCR libraries were generated,...