this study was carried out to investigate the effects of medicinal plants, prebiotic and probiotic as alternatives to antibiotics on the growth performance, intestinal morphology and ileal digestibility of nutrients in broilers. a total of 288 one- day-old broiler chicks (cobb 500) were randomly assigned to 6 treatments and 4 replicates with 12 chicks per each replicate in a completely randomiz...

In this investigation, a sugarcane agroecosystem at a coastal tableland, in the northeast of Brazil, was screened to obtain bacteria strains able to synthesize poly-β-hydroxyalkanoates (PHA), using sucrose as the main carbon source. The potential to synthesize PHA was tested qualitatively by Sudan Black staining of colonies growing in different carbon sources: sucrose, glucose, fructose, propio...

BACKGROUND The World Health Organization (WHO) recommends surveillance of antibiotic use as part of the strategy to fight against antimicrobial resistance. However, there is little information about the antibiotic consumption in developing countries, especially in rural areas. OBJECTIVE The objective of this study was to describe the antimicrobial consumption in a rural hospital in India. M...

OBJECTIVE We evaluated the epidemiology of antimicrobial resistance in enterococci from animal farms and the potential relation of resistance to antimicrobial use. METHODS Enterococci from faecal samples from 18 beef cattle, 18 dairy cattle, 18 swine, 13 chicken, and eight turkey farms were prospectively evaluated over a 6 year period from 1998 to 2003. RESULTS We evaluated 1256 isolates of...

The present study aimed at evaluating two organic acids, Lactic acid (LA) and Citric acid (CA), each of which at 1.0 and 2.0% levels for replacing antibiotic (AB-Virginiamycin 11mg/kg) from diets. In a feeding trial with 270 broiler chicks (Vencobb) LA and CA were tested in 2 x 2 factorial design, and compared with AB and control diets from day-one to 42 d of age in cages. Each of the 6 test di...

BarA of Streptomyces virginiae is a specific receptor protein for a member of butyrolactone autoregulators which binds to an upstream region of target genes to control transcription, leading to the production of the antibiotic virginiamycin M(1) and S. BarA-binding DNA sequences (BarA-responsive elements [BAREs]), to which BarA binds for transcriptional control, were restricted to 26 to 29-nucl...