Efficiency of prebiotics and probiotics on the performance, yield, meat quality and presence of Salmonella spp in carcasses of free-range broiler chickens

Abstract

Two trials were carried out in the present study. Trial I evaluated the performance, carcass yield and breast meat quality, whereas Trial II evaluated the efficacy of utilizing prebiotics + probiotics on the control of Salmonella spp incidence in the carcasses of free-range broilers. In Trial I, 688 one-day-old male chicks of the Naked Neck Label Rouge strain were used, distributed in a randomized block design arranged according to a 2 x 2 factorial: control diet or diet supplemented with probiotics and prebiotics; and two rearing systems (confined or with access to paddocks - 3m²/bird), using four replicates with 35 birds each. The birds were reared until 84 days of age following the recommendations of management and nutrition for free-range strains, and had access to paddocks after 35 days of age. Water and food were given inside the experimental poultry house. Birds fed probiotics and prebiotics in the diet and the confined birds showed better performance, carcass yield and meat quality compared to the birds of the other treatments. In Trial II, 128 one-day-old male chicks of the free-range Naked Neck Label Rouge strain were used. The birds were distributed into four treatments: NCC (non-challenged control), NCS (non-challenged supplemented), CC (challenged control) and CS (challenged supplemented). There were no significant effects of adding probiotics and prebiotics in the diet in regard to Salmonella enteritidis recovery from the carcasses

Comparison Study of a Natural Non-Antibiotic Growth Promoter and a Commercial Probiotic on Growth Performance, Immune Response and Biochemical Parameters of Broiler Chicks

“…Therefore, the beneficial effects of a particular probiotic are strictly dependent on characteristics and quantity of microorganism strains used in the probiotic preparation (Tournut, 1998). The result of the current study is in accordance with findings of other reports (Takahashi et al, 2005;Nunes et al, 2012).…”

Use of probiotics to replace antibiotics for broilers

“…Several authors (Silva et al, 2011;Lorençon et al, 2007;Takahashi et al, 2005;Pelicano et al, 2004), evaluating the use of different growth promoters, showed similar results and found no differences in mortality rates and viability of broilers in the initial rearing phase.…”

“…The use of different growth promoters studied by Silva et al (2011), Faria et al (2009), Lorençon et al (2007, Takahashi et al (2005) and Pelicano et al (2004) did not influence the viability and mortality of broiler chickens in the finishing phase.…”

“…Similarly, Takahashi et al (2005) found no effect of using probiotics and prebiotics on the final weight, weight gain and feed conversion of broilers during 1-35 days of age. Rocha et al (2010) also showed no differences in performance variables according to the use of prebiotics, probiotics and organic acids in diets for broilers in the period of 8-21 days of age.…”

“…The use of different growth promoter additives did not influence the results of feed conversion of chicks in the initial rearing phase in the studies conducted by Silva et al (2011), Rocha et al (2010), Faria et al (2009), Lorençon et al (2007, Takahashi et al (2005) and Pelicano et al (2004). However, Maiorka et al (2001), evaluating the effects of substitution of antibiotics by prebiotics, probiotics and synbiotics in diets for broilers in the period of 1-21 days of age, observed better feed conversion in poultry fed probiotics.…”