Alternatives to Antibiotics
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Article
A blend of benzoic acid and essential oil compounds as an alternative to antibiotic growth promoters in broiler diets
The discussions about the possibility of bacterial resistance resulting from the use of antimicrobial growth promoters in broiler feed. The limitations of international market have forced the exporting countries to search for alternatives to ensure the animal growth without affecting the quality of... Continue reading...
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Article
Direct-fed microbial and its combination with xylanase, amylase, and protease enzymes in comparison with AGPs on broiler growth performance and foot-pad lesion development
This study evaluated the effect of a direct-fed microbial (DFM) and its combination with xylanase, amylase, and protease (XAP) enzymes cocktail on performance of broilers, in comparison with two commonly used antimicrobial growth promoters (AGPs). Five treatments were tested using day-old Ross 708... Continue reading...
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Article
Effects of dietary supplementation with oregano essential oil on growth performance, carcass traits and jejunal morphology in broiler chickens
This study was conducted to investigate the effects of diets containing oregano essential oil (OEO) on growth performance, carcass traits and intestinal morphology of broilers during a 42-day production period. A total of 448 one-day-old Arbor Acres broilers were randomly distributed into 4 dietary... Continue reading...
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Article
Prebiotics and probiotics used alone or in combination and effects on pullet growth and intestinal microbiology
A study was conducted examining the effects of prebiotics and probiotics separately and in combination on growth parameters, fecal and cecal microbiota. Six dietary treatments consisted of: 1) control, 2) control + 0.2 lb/ton calculated to contain 1 × 1010Pediococcus acidilactici/kg, 3) control + 0... Continue reading...
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Article
Effect of Bacillus subtilis supplementation in low energy diets on broiler performance
Studies have shown that direct-fed microbials (DFMs) based on spore-forming bacteria supplemented in poultry feed are able to improve broiler performance. In the present study, the interaction of feed supplemented with Bacillus subtilis and different metabolizable energy (ME) levels in feed on Cobb... Continue reading...
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Article
Evaluating the effect of microencapsulated blends of organic acids and essential oils in broiler chickens diet
A ban on using antibiotics as growth promoters in the diet of commercial poultry and swine in most developed countries and the public trend in consuming organic animal products have resulted in increasing the use of natural substances in feeding farm animals. Among different available alternatives... Continue reading...
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Article
The effect of dietary fructooligosaccharide supplementation on growth performance, intestinal morphology, and immune responses in broiler chickens challenged with Salmonella Enteritidis lipopolysaccharides
This study was conducted to examine the effects of fructooligosaccharide (FOS) supplementation on growth performance, lymphoid organ weight, intestinal morphology, and immunological status in broilers (n = 180) challenged with Salmonella Enteritidis lipopolysaccharides (LPS). Birds were randomly... Continue reading...
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Article
Effects of pre-encapsulated and pro-encapsulated Enterococcus faecalis on growth performance, blood characteristics, and cecal microflora in broiler chickens
The effects of microencapsulation of Enterococcus faecalis on the growth performance, antioxidant activity, immune function, and cecal microbiota in broilers were investigated. Broilers (1-day-old) were assigned randomly as follows: 5 treatments, 5 replicate pens per treatment, and 20 broilers per... Continue reading...
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Article
Effect of plant extracts derived from thyme on male broiler performance
The effect of dietary thyme-oil extract (TOE) supplementation on immune functions of broilers were assessed by feeding graded levels (50, 100, 200, or 400 ppm) of TOE to male broiler chicks during a 42-d feeding trial compared with negative- or positive-control diets. Dietary control treatments... Continue reading...
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Article
Effect of dietary probiotic and high stocking density on the performance, carcass yield, gut microflora, and stress indicators of broilers
A study was carried out to evaluate the effect of dietary probiotic supplementation and stocking density on the performance, relative carcass yield, gut microflora, and stress markers of broilers. One-day-old Ross 308 male broiler chickens (n = 480) were allocated to 4 experimental groups for 42 d... Continue reading...