Abstract
ABSTRACT The objective of this study was to evaluate the inclusion of cell wall of Saccharomyces cerevisiae (CWSc) and piperine in broiler rations and their effects on performance, carcass traits, blood parameters, ileal microbiota and nutrient digestibility. A randomized block design with five treatments and six replicates of 10 birds was used, totaling 300 chickens. The treatments consisted of: control ration (CR); CR + avilamycin (10 mg / kg); CR + CWSc (2.0 g / kg); CR + piperine (60 mg / kg); and CR + CWSc (2.0 g / kg) + piperine (60 mg / kg). The use of isolated piperine resulted in greater weight gain from 9 to 40 days of age (2505g). The additives CWSc and piperine conjugates influenced the lower coliform count in the ceca (4.45 CFU / g) and caused significant alterations in the biochemical serum and hepatic renal profile. The treatments had no effect on the nutrient metabolizable coefficients or on the carcass traits. There was no positive synergistic effect of the combined use of CWSc and piperine on broiler performance. The cell wall of Saccharomyces cerevisiae and piperine are effective at guaranteeing productivity, intestinal microbiota dynamics and hematological parameters; and as zootechnical additives, especially in broiler feeds free of antimicrobial performance enhancers.
Highlights
The use of antimicrobials in broiler feeds has contributed to the increase of bacterial resistance, which is a worldwide concern (GarciaMigura et al, 2014)
The restrictions to the addition of antimicrobials in animal feed as growth promoters has led to an increased interest in functional ingredients that can be used to ensure the intestinal health of the birds via their feed
One compound that stands out is piperine, the main active compound found in peppers of the genus Piper sp. (Jang et al, 2007), which has several effects, such as: being antimicrobial (Karsha & Laksmi, 2010), acting as a stimulant in the secretion of pancreatic enzymes (Jang et al, 2007), and having pepper (Piper nigrum L.)
Summary
The use of antimicrobials in broiler feeds has contributed to the increase of bacterial resistance, which is a worldwide concern (GarciaMigura et al, 2014). The restrictions to the addition of antimicrobials in animal feed as growth promoters has led to an increased interest in functional ingredients that can be used to ensure the intestinal health of the birds via their feed. In this sense, the use of phytogenics (Murugesan et al, 2015) and prebiotics (Yadav et al, 2016) can be highlighted, with the aim of improving the intestinal health and, broiler performance due to positive changes in their intestinal microbiota and stimulating the immune system. One compound that stands out is piperine, the main active compound found in peppers of the genus Piper sp. (Jang et al, 2007), which has several effects, such as: being antimicrobial (Karsha & Laksmi, 2010), acting as a stimulant in the secretion of pancreatic enzymes (Jang et al, 2007), and having pepper (Piper nigrum L.)
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