Virginiamycin produced by Streptomyces virginiae as a natural mix of macrocyclic peptidolactones M and S is widely used in the industrial production of ethanol fuel and as an antibiotic feed additive for cattle and poultry. Its main antimicrobial components, M1 and S1 factors, act synergistically if the M1:S1 ratio in the final product is 70-75:25-30. This fact significantly complicates the dev...

When cereal grain is fed to horses there is a risk of laminitis and it is also common to fmd behavioural changes characterised by chewing wood, eating bedding and grasping (wind sucking). This paper discusses the link between acidity in the gut, as a result of grain feeding, and the risk of laminitis and adverse behaviour. A proportion of the starch consumed as cereal grain passes undigested to...

Background: Some medicinal plants can stimulate growth in poultry. Objective: To compare the effects of dietary addition virginiamycin antibiotic and galbanum plant (Ferula gummosa) on performance, carcass characteristics, immune system, blood factors broiler chickens. Methods: A total 250 one-day-old male Ross 308 chickens were randomly assigned to five treatments with replicates (10 birds per...

introduction: following the ban on antimicrobial growth promoters in poultry nutrition in eu and growing pressure on poultry producers in other parts of the world, there is an increasing interest in searching for growth promoting and immune system-strengthening alternatives. among the possible alternatives, probiotics, prebiotics, synbiotics (combination of probiotic and prebiotic) and more rec...

An experiment was conducted to study the effect of supplementing Non-starch Polysaccharide enzymes and prebiotics alone or in combination to sub-optimal energy corn soybeanbased broiler diets on performance. 150 day old broiler chicks were randomly distributed in to five experimental groups, six replicates per group and five birds per replicate. A standard diet (SD) and a basal diet (BD) (225 k...

A study was conducted to evaluate the effects of adding all essential amino acids (EAA) equal to that of higher CP diets or a mixture of nonessential amino acids (NEAA) to low CP diets on the live performance of broilers during the period of 0 to 21 d. A series of experimental diets comprised primarily of corn and soybean meal were formulated to contain 3,200 ME kcal/kg. Five primary diets were...

From 1995 to 2000, a total of 673 Enterococcus faecium and 1,088 Enterococcus faecalis isolates from pigs together with 856 E. faecium isolates from broilers were isolated and tested for susceptibility to four classes of antimicrobial agents used for growth promotion as part of the Danish program of monitoring for antimicrobial resistance. The four antimicrobials were avilamycin, erythromycin, ...