Alternatives to Antibiotics
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Article
Dietary Lactobacillus acidophilus positively influences growth performance, gut morphology, and gut microbiology in rurally reared chickens
In a market undergoing constant evolution, the production of chicken meat that consumers would perceive as “natural” and “animal friendly” is crucial. The use of probiotics in rurally reared chickens could represent a major opportunity to achieve mutual benefit for both the industry and consumers.... Continue reading...
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Article
Performance and cost-benefit improvements following supplementation with a combination of direct-fed microbials and enzymes to broiler chickens raised with or without ionophores
Increased resistance and loss of sensitivity to traditional anticoccidial agents, as well as interest in antibiotic-free rearing programs, has increased the interest in alternative control measures. Therefore, this study aimed to assess the effect of a DFM (direct fed microbial)/multi-enzyme... Continue reading...
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Article
Effect of yeast cell wall on the growth performance and gut health of broilers challenged with aflatoxin B1 and necrotic enteritis
This study aimed to investigate the effect of yeast cell walls (YCW) on the growth performance, visceral lesions, intestinal integrity, enterotoxicity, and bacteria of broilers challenged with aflatoxin B1 (AF) and necrotic enteritis (NE) from 1 to 21 d of age. A total of 576 one-day-old broilers... Continue reading...
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Article
Effects of dietary supplementation with enzymatically treated Artemisia annua on growth performance, intestinal morphology, digestive enzyme activities, immunity, and antioxidant capacity of heat-stressed broilers
The gastrointestinal tract is considered as one of the main target organs affected by heat stress. Phytogenic feed additives containing phenolics and flavonoids can improve the resistance of broilers to heat stress. This study was conducted to investigate the effects of dietary supplementation with... Continue reading...
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Article
Influence of different yeast cell wall preparations and their components on performance and immune and metabolic pathways in Clostridium perfringens-challenged broiler chicks
A study was conducted to evaluate the influence of the purification of yeast cell wall (YCW) preparations on broiler performance and immunogenic and metabolic pathways under microbial challenge. A total of 240 (day old) chicks were distributed among two battery brooder units (48 pens; 5 birds/pen;... Continue reading...
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Article
Evaluation of the addition of organic acids in the feed and/or water for broilers and the subsequent recovery of Salmonella Typhimurium from litter and ceca
Three separate broiler Salmonella Typhimurium challenge experiments were conducted evaluating efficacy of formic and propionic acid feed supplements to suppress environmental and cecal Salmonella Typhimurium prevalence. In experiment 1, broilers were provided feed with 1 kg/ton formic acid or 5 kg/... Continue reading...
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Article
Effects of direct-fed microorganisms and enzyme blend co-administration on intestinal bacteria in broilers fed diets with or without antibiotics
Direct-fed microorganisms (DFM) and exogenous enzymes have been demonstrated to improve growth performance in poultry and are potentially important alternatives to antibiotic growth promoters (AGP). We investigated the administration of a feed additive composed of a DFM product containing spores of... Continue reading...
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Article
Effects of star anise (Illicium verum Hook.f.), essential oil, and leavings on growth performance, serum, and liver antioxidant status of broiler chickens
An experiment using 384 one-day-old male Arbor Acres broilers that were randomly allocated to 4 treatments with 8 replicates in a completely randomized design was conducted to assess the effects of star anise (Illicium verum Hook.f.), essential oil, and leavings on growth performance and... Continue reading...
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Article
Effect of Bacillus subtilis (DSM 17299) on performance, digestibility, intestine morphology, and pH in broiler chickens
This study investigated the effect of supplementation of a Bacillus subtilis strain DSM 17299 on broilers, including evaluation of performance, nutrient digestibility, intestinal morphology, and content pH. The treatments also were evaluated for economic value based on performance and dietary costs... Continue reading...
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Article
Effect of synbiotic supplementation on layer production and cecal Salmonella load during a Salmonella challenge
This study analyzed the inhibitory effects of a synbiotic product (PoultryStar® me) on production parameters, intestinal microflora profile, and immune parameters in laying hens with and without a Salmonella challenge. The synbiotic product contained 4 probiotic bacterial strains (Lactobacillus... Continue reading...