The influence of phytogenic extracts on performance nutrient digestibility, carcass characteristics, and gut microbial status in broiler chickens

By D. Jamróz, J. Orda, C. Kamel, A. Wiliczkiewicz, T. Wertelecki, J. Skorupińska. 2003

295 citations recorded by the source corpus.

One thousand five hundred and forty Hybro HI-YR broilers were used in the study. One-day-old chickens were allocated to four groups; in the pen trial each group comprised 5 replications with 56 birds, in the digestibility trial there were 7 replications with 15 birds. The dietary treatments were as follows: unsupplemented control wheat-barley diet or the same diet supplemented with 10 ppm avilamycin, 150 ppm or 300 ppm of plant extract (XT) containing capsaicin (1.98 g/100 g), carvacrol (4.95 g/100 g) and cinnamic aldehyde (2.97 g/100 g). Performance was determined on days 21 and 48. After slaughter the rectum content was collected for E. coli and Clostridium perfringens assay; slaughter yield and sensorial evaluation of breast and thigh muscles were performed on 16 birds per group. In the digestibility trial, on days 21 and 32 of life, after slaughter the apparent ileal digestibility of nutrients and amino acids was estimated on 28 birds per group. In comparison with the control group, up to day 21 of life the administration of feed antibiotic and 150 ppm or 300 ppm of plant extract enhanced body weight by 4.7, 5.4 and 8.1% (P<0.01) and improved the feed conversion ratio by 5.8, 3.1 and 7.1%, respectively (P<0.05). The mortality and culling rate was low (1.8-2.5%). At 48 days of age, performance in groups as well as carcass characteristics were less diversified, only a slightly higher breast muscle share was obtained in the experimental groups. Sensorial characteristics of the breast and thigh meat were best in the group receiving 300 ppm XT. In all supplemented groups the number of E. coli and Clostridium perfringens in rectal contents was significantly lower than in the control group; supplementation of the diet with 300 ppm XT and feed antibiotic had a similar effect on the number of evaluated microorganisms. Apparent ileal digestibility of nitrogen, nutrients, and amino acids, particularly of threonine, serine, asparagine, phenylalanine, histidine and lysine, in 21-day-old chickens was positively affected by XT supplementation. The coefficients of apparent ileal digestibility of nutrients in older birds (32-day-old) in groups fed diets with XT or feed antibiotic were similar.

Subfields: Animal Science and Zoology, Food Science

View Paper: https://www.semanticscholar.org/paper/c21343c9bf499e35891f6b2f6eef06b33b175a0f

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Citations in the corpus

The effect of herbs and their associated essential oils on performance, dietary digestibility and gut microflora in chickens from 7 to 28 days of age (2007, background): “Blended supplements containing carvacrol, capsaicin and cinnamaldehyde have improved both BM and FCR in broilers at 21 d of age to a greater extent than avilamycin (Jamroz et al., 2003).”
Phytobiotics in poultry and swine nutrition – a review (2017, background): “Some studies with broiler chickens demonstrated the in vivo antimicrobial efficacy of essential oils against E. coli and Clostridium perfringens (Jamroz et al. 2003, 2006; Mitsch et al. 2004).”
Chemical composition and nutritional properties of freshwater and marine microalgal biomass cultured in photobioreactors (2014, background): “Specific phenolic compounds such as terrestrial plant-derived tannins have been shown to provide beneficial effects by inhibiting harmful bacterial colonization of the intestine, as demonstrated in terrestrial livestock such as poultry (Jamroz et al. 2003), swine (Van Parys et al.”
Effect of a herbal essential oil mixture on growth and internal organ weight of broilers from young and old breeder flocks (2006, background): “Moreover, Jamroz et al. (2003) found that the inclusion of 150 or 300 mg/kg of a plant extract containing capsaicin, carvacrol and cinnamicaldehyde in a diet improved body weight by 5.4 and 8.1%, respectively.”
Use of phytogenic products as feed additives for swine and poultry. (2008, background): “On the other hand, some studies with broilers demonstrated in vivo antimicrobial efficacy of essential oils against Escherichia coli and Clostridium perfringens (Jamroz et al., 2003, 2005; Mitsch et al., 2004).”
Dietary modulation of gut microflora in broiler chickens: a review of the role of six kinds of alternatives to in-feed antibiotics (2009, background): “In addition, dietary supplementation of EO reduced the intestinal populations of E. coli (Jamroz et al., 2003; Jang et al., 2007) and increased digestive enzymes in either pancreas and/or intestinal mucosa (Lee et al., 2003; Jang et al., 2007); however intestinal mucosal morphology was not affected…”
Effect of garlic powder on performance and lipid profile of broilers (2012, background): “The stabilizing effect on intestinal microflora may be associated with intermediate nutrient metabolism [11,34,35].”
Effect of the Three Herbal Extracts on Growth Performance, Immune System, Blood Factors and Intestinal Selected Bacterial Population in Broiler Chickens (2011, background): “The stabilizing effect on intestinal microflora may be associated with intermediate nutrient metabolism (Horton et al., 1991; Baratta et al., 1998; Jamroz et al., 2003).”