Effect of Dietary Antibiotic, Probiotic and Prebiotic as Growth Promoters, on Growth Performance, CarcassCharacteristics and Hematological Indices of Broiler Chickens

Abstract

This experiment was conducted for comparison the effects of antibiotic (flavomycin), probiotic (primalac), prebiotic (Biolex-MB) and mixture ofprobiotic and prebiotic (primalac plus Biolex-MB) as dietary growth promoter on growth performance, carcass characteristics and hematological indices of broiler chickens. Three hundred day old Ross 308 broilers were equally distributed into 30 floor pens and reared for 42 day. A basal diet was formulated covering the recommendations of NRC (1994) for starter (0-21 days) and grower (22-42 days) periods and considered as control diet. Four tested diets were formulated by supplemented the basal control diet with antibiotic (flavomycin), probiotic (primalac), prebiotic (Biolex-MB) and mixture ofprimalac plus Biolex-MB, respectively. Six replicates were used for each treatment. The results of present study showed that all growth promoters used was improved growth indices of Ross 308 broilers. The highest significant (p<0.05) values of carcass and thigh were recorded for broilers fed diet supplemented with flavomycin. The highest (p>0.05) value of breast was recorded for broilers fed the diet supplemented with primalac, meanwhile the lower value were showed for birds fed either diet or diet supplemented with Biolex-MB. The percent of carcass and cuts followed the same trend. Hematological parameter including cholesterol was recorded the highest (p>0.05) values groups fed the diets either control or supplemented with flavomycin, meanwhile the lower value was showed for bird fed diet supplemented primalac plus Biolex-MB. Triglycerides and very low density lipoprotein cholesterol (VLDL) were recorded the highest concentration for bird fed both control and diet supplemented with flavomycin groups while least concentration was found for bird fed diet supplemented with primalac. The results of present study revealed that probiotic and prebiotic as growth promoters can use as alternatives non-antibiotic feed additives to their free harmful side effects on the consumers and to improve broiler chickens growth indices.

Effects of dietary inclusion of probiotics, prebiotics and synbiotics on intestinal histological changes in challenged broiler chickens

“…These results are in agreement with those reported by Awad et al (2009). Many researchers have reported that probiotics and synbiotics enhance the performance of broilers by improving the intestinal morphology and microbial balance associated with suppressing pathogens and increasing the nutrient digestibility in the small intestine (Li et al, 2007;Ashayerizadeh et al, 2009). Birds that are experiencing chronic intestinal enteritis are in a constant mode of inflammation and recovery (Star et al, 2010).…”

Effects of Tulsi Leaf Extract on Body Weight Gain in Broiler Production

“…European Commission banned four common ly used feed antibiotics: monensin sodium, salinomycin sodium, avilamycin, flavophospholipol (Banerjee, 1998). The banning of antibiotic growth promoter (AGP) will affect the poultry and livestock industry (Ashayerizadeh et al, 2009). To minimize the loss in growth, there is a need to find alternative to AGP.…”

The Effect of Symbiotic Drenching Mixture on the Ingestive Behavior, Productive Performance, Blood Biochemical Parameters and Carcass Traits of Growing Rabbits

“…Ashayerizadeh et al (2009) reported that prebiotics and probiotics as growth promoters can be used as alternatives for antibiotics because they improve growth performance of broiler chickens without any effect on consumers. Similar results for the improvement of growth performances have been reported by Sieo et al (2005); Apata (2008) and Yu et al (2008).…”