
Comparison the effect of two herbal extracts, Propolis, Antibiotic and Coccidiostat on Immune System, Blood Parameters and Performance of Broiler Chickens Challenged with E. coli | ||
تولیدات دامی | ||
Article 13, Volume 19, Issue 3, November 2017, Pages 685-696 PDF (685.37 K) | ||
Document Type: Research Paper | ||
DOI: 10.22059/jap.2018.115540.622823 | ||
Authors | ||
abbas ashoori; Alireza Behnamifar | ||
Department of Poultry Science, Faculty of Agriculture, Tarbiat Modars University, Tehran, Iran | ||
Abstract | ||
The effects of the herbal extracts (Rosemary officinalis L., Salvia officinalis), propolis, virginiamycin antibiotic and the herbal coccidiostat were studied on broiler chickens challenged with two E. coli strains (O78K80 & O2K12). A total of 476 female cobb 500 broilers was allocated in a completely randomized design considering seven treatments with four replicates and 17 birds per each for 42 days. Negative and positive control groups received a basal diet with no supplementation. The two herbal groups received a basal diet with 1 mL of ethanol herbal extracts (Rosemarinus officinalis & Salvia officinalis) / L drinking water, respectively. The virginiamycin (10%), the herbal coccidiostat and the ethanol extract of propolis groups fed the basal diet plus 150, 200 and 500 mg / kg diet, respectively. All groups except negative control challenged with two E. coli strains (O78K80 & O2K12) in 14d of rearing period. Herbal extract decreased the intestinal population of E. coli and Salmonella compared to the positive control (P<0.05). In the rearing period, feed conversion ratio and feed intake in chickens received herbal extracts and herbal coccidiostat were significantly lower than control groups (P<0.05). Birds that received rosemary and propolis had the lowest relative weight of the breast compared to other treatments (P<0.05).Herbal extracts decreased the cholesterol and increased HDL levels of serum (P<0.05). It could be concluded that the herbal extracts can be used as an alternative to antibiotics as growth promoters in broiler chicks. | ||
Keywords | ||
Antibiotics; Rosemary; Salvia; propolis; Coccidiostat; E. coli | ||
References | ||
1. Agunos A, Léger, D, and Carson C (2012). Review of antimicrobial therapy of selected bacterial diseases in broiler chickens in Canada. The Canadian Veterinary Journal, 53(12), 1289.
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