Dietary effect of probiotics and prebiotics on broiler performance, carcass, and immunity

Abstract

This experiment was carried out to evaluate the effects of dietary addition of probiotics (Protexin) and prebiotics (active MOS, mannan oligosaccharides) on growth performance, carcasses, and antibody titer in broilers. A total number of 360-day-old Ross broiler chicks were randomly divided into 9 groups in a 3 × 3 factorial arrangement. Nine broiler starter (0–21 d) and finisher (21–35 d) diets were formulated by using 3 levels of probiotics (0, 1, and 2 g/kg of feed) and 3 levels of MOS (0, 1, and 1.5 g/kg of feed) and were randomly allotted to 9 groups. Feed intake was not affected by interaction of treatments during all phases ( P > 0.05). Feed intake was improved due to the main effect of probiotic ( P = 0.0001) or MOS ( P = 0.005). No interaction ( P > 0.05) was observed for weight gain in the starter, finisher, and overall phases. While, during the starter and finisher phases, weight gain was increased by probiotics ( P = 0.028 or 0.04, respectively). Dietary supplementation of MOS improved weight gain ( P = 0.01) and feed conversion ratio ( FCR ) ( P = 0.03) during the overall period, but during starter and finisher periods, weight gain and FCR were not affected by prebiotics. Apart from dressing percentage, no interaction or individual effect of probiotics and prebiotics was observed for carcass, breast, thigh, heart, liver, and gizzard weight. Antibody titer for infectious bursal disease ( IBD ) was improved ( P = 0.026) by the interaction effect between probiotics and prebiotics, when compared with the control group. Antibody titer against Newcastle disease ( ND ) was not affected by probiotics or prebiotics or their interactions ( P > 0.05). It could be concluded that supplementation of prebiotics or probiotics can improve the growth performance of broilers. It may also be helpful in improving the antibody titer against IBD in broilers fed antibiotic-free diets.

Effects of Lactobacillus reuteri and Streptomyces coelicolor on Growth Performance of Broiler Chickens

“…Although, abdominal fat yield is not statistically different in all the dietary treatments, birds fed with L. reuteri have shown the lowest fat percentage when compared to other treatments, this result may be credited to the decreasing effect of probiotics on fat deposition [ 37 , 66 ]. These results are in contrast with the studies of Moreira et al [ 67 ] and Vargas Jr. et al [ 68 ] that found no differences in the carcass yield by administering probiotics, while Rehman et al [ 69 ] concluded that supplementation of prebiotics or probiotics can improve the growth performance of broilers, Yousefi and Karkoodi, [ 70 ] and Sarangi et al [ 71 ] reported contradicting findings; weight gain was not affected by supplementation of probiotics in broiler diet. In this study, we discovered that S. coelicolor possessed beneficial effects on carcass percentage and breast percentage compared to all the other dietary treatments, while L. reuteri possessed positive effects on abdominal fat yield.…”

Effect of Yeast-Fermented Citrus Pulp as a Protein Source on Nutrient Intake, Digestibility, Nitrogen Balance and In Situ Digestion Kinetics in Nili Ravi Buffalo Bulls

“…Saccharomyces cerevisiae is a rich source of enzymes, vitamins and other unknown cofactors that increase the activity of microbes in the rumen [5,6]. It also has a good amino acids profile and is endowed with prebiotic activity [7][8][9]. It also has the ability to compensate vitamin and amino acid deficiencies [10].…”

The potential mechanistic insights and future implications for the effect of prebiotics on poultry performance, gut microbiome, and intestinal morphology

“…Hooge (2004) showed that MOS inclusion in broilers’ diets significantly boosted body weight and FCR and reduced mortality compared to the nonsupplemented diet. The inclusion of MOS in diets as a prebiotic could increase broilers’ growth rate ( Rehman et al., 2020 ). However, when comparing the antibiotics to MOS, there were no significant differences in birds’ body weight and FCR ( Ricke, 2015 , 2018 ; Micciche et al., 2018 ; Kim et al., 2019 ).…”

“…The diet is the primary influence on the microbial profile and its encoded functions, affecting it toward the preferred trend ( Rehman et al., 2020 ). While the diet has been formulated for the poultry's nutritional needs, its capacity to influence metabolically active microorganisms has been overlooked ( Apajalahti and Vienola, 2016 ).…”