Evaluation of broilers growth fed with diets supplemented with Synbiotic compared to Antibiotics
In animal production, antimicrobial resistance of pathogens is threatening animal and human health. This has resulted in the search for natural alternatives which could replace antibiotics as growth promoters and improve animal health, including those which stimulate growth of beneficial bacteria in the gut. The use of prebiotics, probiotics and synbiotics as an alternative to antibiotic growth promoters in poultry feed has been extensively studied. In the present study, the effects of synbiotic supplementation on the growth parameters of broilers were analysed and compared with antibiotic growth promoters commercially available in the market. In addition to growth parameters, intestinal length and morphology of the intestine were also evaluated during this experiment.
Bacflora F is a Synbiotic (Prebiotic + Probiotic) product of XVET Germany and also counts with the acidifying effect of rich organic acids. This balanced synergy of ingredients, helps to enhance gut health and support digestive performance.
For this experiment, six hundred-forty (640) one-day old broiler chickens (Ross 308) which were previously immunized against routine diseases (breed rearing program) were used in this study. The birds were randomly divided into 32 areas (Each treatment: 20 birds) with 4 repetitions for each of the treatments (Table. 1).
The total feed consumption, average weight gain, Feed Conversion Ratio (FCR), intestinal length (day 21 and 49) and intestinal epithelium morphology (day 21 and 42) were evaluated. ANOVA Minitab 16 was utilized to analyse the data where values of P<0.05 were considered statistically significant.
Total feed consumption, weight gain and FCR:
T1 (Antibiotic) had the highest (5.162a ± 0.18) feed consumption (P<0.05) whereas T8 (Control) consumed the smallest quantity of feed (4.937c ± 0.18). Throughout the duration of the experiment, treatment 2 (Antibiotic) had the higher weight gain (2.859a ± 0.18) which was significantly different (P<0.05) from Treatment 6 (Prebiotic). Amongst the groups fed with non-antibiotic growth promoters (NAGPs) such as Bacflora F and other commercially available prebiotics and synbiotics, Bacflora F (T3) group had the highest weight gain (2.817abc ± 0.10) when compared with the (P>0.05) (Figure 1). FCR was significantly lower in T4 (Bacflora F) (1.82 b ± 0.08) (Figure 2). Figure 3 shows the feed consumption, weight gain and FCR in all the treatments.
Figure 3: Comparison between total feed consumption, weight gain and FCR