This experiment was conducted to examine the effect of multi-strain probiotic (Primalac) on performance, immune responses and cecal microflora in broiler chickens under cyclic heat stress condition. A total of 96 one-d-old mixed sex broiler chicks (Ross 308) were weighed and randomly allocated to two treatment groups, each with 4 replicate pens of 12 chicks. The dietary treatments were basal di...

A protective digestive microflora helps prevent and reduce broiler infection and colonization by enteropathogens. In the current experiment, broilers fed diets supplemented with probiotics and essential oil (EO) blends were infected with a standard mixed Eimeria spp. to determine effects of performance enhancers on ileal and cecal microbial communities (MCs). Eight treatment groups included fou...

High fiber and nonstarch polysaccharide-based poultry diets have received more interest recently for retaining or promoting beneficial gastrointestinal microbial populations. The objective of this study was to investigate and compare the in vitro potential fermentability of high-fiber feed substrates (HFFS) by laying hen cecal microflora. Feed sources examined included soybean meal, soybean hul...

Enlargement and microbial colonization of the cecum were examined in neonatal mice suckling mothers drinking either water or an aqueous solution of penicillin. The full ceca increased in weight at the same rate in both drug-treated and control mice during the first 15 to 17 days after birth. Thereafter, cecal weight increased at a greater rate in the drug-treated animals than in the untreated c...

The role of the intestinal flora in the conversion of N-hydroxy-4-acetyl-aminobiphenyl (N-OH-AABP) to 4-acetylaminobiphenyl has been examined. This reaction, which reverses the metabolic activation of the parent carcinogen, can be demonstrated in cultures of some bacteria indigenous to the intestinal microflora. These include cultures of Clostridium sp., Clostridium perfringens, Peptostreptococ...

OBJECTIVE This study was conducted to investigate the effects of dietary detoxified Rhus verniciflua sap (RVS) on production performance, egg quality, lipid fractions of egg yolk, liver and serum, and the profile of cecal microflora in laying hens. METHODS Two hundred 52-week-old Hy-Line Brown layers were randomly divided into 4 groups with 5 replicates per group (2 hens per cage, 5 cages per...

Preservation of indigenous gastrointestinal microbiota is deemed to be critical for successful captive breeding of endangered wild animals, yet its biology is poorly understood. Here, we investigated cecal bacterial communities in wild Japanese rock ptarmigans (Lagopus muta japonica) and compared them with those in Svalbard rock ptarmigans (L. m. hyperborea) in captivity. Ultra-deep sequencing ...

The microflora in the gastrointestinal tract of broiler chickens influences digestion, health, and wellbeing. Analysis of chicken gut microflora has been mainly by culture-based methods. Studies using these techniques have been useful for identification and analysis of specific groups of bacteria, however, the use of enrichment medium precludes even relative quantitation of bacterial species. R...