Effect of Yeast Culture (Saccharomyces cerevisiae) on Broilers: A Preliminary Study on the Effective Components of Yeast Culture

Abstract

This study was aimed at determining the effective ingredients of yeast culture (YC) for animal breeding. First, the contents of YCs obtained from various fermentation times were detected using gas-chromatography. A total of 85 compounds were identified. Next, 336 Arbor Acres (AA) broilers were randomly divided into seven experimental groups and fed a basal diet, diets supplemented with YCs obtained at various fermentation times, or SZ1 (a commercial YC product). A significant increase in body weight gain (BWG) and a significant decrease in feed conversion ratio (FCR) of AA broiler chicks were observed with YC supplementation. Additionally, most of blood and immunological indices were improved with YC supplementation. According to the production performance and the results of multivariate analysis, glycine, fructose, inositol, galactose, and sucrose were found as the potential effective compounds of YC and were involved in metabolic pathways including glycine, serine, and threonine metabolism. Supplementation with diets based on combinations of effective compounds improved weight gain, feed efficiency, serum immunoglobulin A, and immunoglobulin G, but decreased blood urea concentration. These findings suggest YCs as effective and harmless feed additives with improved nutritional properties for broiler chicks.

Effect of a Multispecies Probiotic Mixture on the Growth and Incidence of Diarrhea, Immune Function, and Fecal Microbiota of Pre-weaning Dairy Calves

“…Severe damage to organs has been eliminated due to diets that may contain these toxins in the presence of S. cerevisiae for their ability to reduce animal stress, providing vitamins, enzymes, and proteins (Baptista et al, 2005). Saccharomyces cerevisiae in calf diets augment immunological effect by increasing IgM and IgA activity against pathogens, enhancing intestinal development and function, adsorb mycotoxins, modulate gut microbiota, and reduce post-weaning diarrhea (Qamar et al, 2001;Sun et al, 2019;Elghandour et al, 2020). We found that the increased abundance of Saccharomyces in group T3 improved the concentrations of IgA and IgG than the control group.…”

Effects of a yeast-derived product on growth performance, antioxidant capacity, and immune function of broilers

“…Yeast-derived products, such as yeast cell call ( Wang et al., 2017 ; Ma et al., 2020 ), yeast hydrolysate ( Fu et al, 2019 ; Rahimnejad et al., 2020 ), dried yeast extracts ( Kim et al., 2019b ), and yeast culture ( Samarasinghe et al, 2004 ; Sun et al., 2020 ), are natural feed additives that have been used in animals for decades. Supplementing animals with yeast cell wall improved the growth performance, digestive function, and antioxidant capacity of animals ( Li et al., 2016 ; Wang et al., 2017 ; Salinas-Chavira et al., 2018 ).…”

“…Supplementing animals with yeast cell wall improved the growth performance, digestive function, and antioxidant capacity of animals ( Li et al., 2016 ; Wang et al., 2017 ; Salinas-Chavira et al., 2018 ). Yeast culture contains cell wall and various metabolites, which have been proposed to stimulate bacterial growth in the digestive tract and optimize animal feed intake to improve growth performance as well as active the natural killer cells and B lymphocytes to promote immune function ( Gao et al., 2008 ; Sun et al., 2020 ). The addition of yeast culture could improve intestinal nutrients digestibility ( Samarasinghe et al., 2004 ), enhance disease resistance ( Bu et al., 2019 ), and alleviate inflammatory responses ( Bu et al., 2020 ) in animals.…”

Determination of Some Physiological and Immunological Characterisation as Dietary Biological Addition on Broiler Chicks

“…The enhancements due to 0.2 and 0.3g SC/kg addition as compared to control groups were 35.6 and 47.3%, respectively. Comparative findings have been showed by Sun et al (2020) and Al-Khalaifa et al (2019) on treated broilers with dietary addition of SC and SB, respectively. On the opposite, Khobondo et al (2015) decided that dietary probiotic addition didn't significantly affect the levels of IgM level.…”

“…One of the most popular probiotic products contain Sacharomcyces spp varieties and has long been fed to poultry, is Saccharomyces cerevisiae (SC) which produce from malted grains fermentation also known as ''baker's yeast'' (Khan et al, 2014). Dietary SC supplements significantly influence blood haematology and biochemical indices which could be utilized to evaluate the pathological and nutritional responses of broiler (Sun et al, 2020). A research by Haghighi et al (2006) recommended that SC have an immune boosting effect due to improve acceptance of natural antibodies in chickens.…”