Effect of Different Levels of Supplemental Yeast on Body Weight, Thyroid Hormone Metabolism and Lipid Profile of Broiler Chickens

Abstract

ABSTRACT. In poultry, the benefits of probiotic supplementation on broiler performance and health have been reported. The present study examined the effect of supplemental yeast probiotic preparations on body weight, thyroid hormone metabolism and serum lipid profile in broilers. The experiment was carried out on hybrid Marshall broiler chickens (n=200). Two hundred 1-day-old chicks were randomly selected and distributed into 4 groups of 50 1-day-old chicks each (control, C; E 1 0.5%, E 2 1.5% and E 3 2.0%, experimental groups). The birds were housed in an environmentally controlled poultry house with the floor covered with wood shavings. Chicks were fed commercial broiler starter diet for the first 28 days of age, followed by pelleted finisher diet from 29-42 days. Feed and water were provided ad libitum. Chickens fed 2.0% probiotic had a significantly (P<0.05) higher body weight when compared with the control group. The blood glucose concentration was significantly (P<0.05) different in the E 3 1.5% probiotic supplemented group when compared with the control. There was highly significant (P<0.05) difference in T 4 level in the E 3 2.0% probiotic group when compared with the control. However, there was a significant difference in cholesterol concentrations observed in the experimental group supplemented with E 1 0.5% probiotic. The concentration of triglycerides was not affected by the probiotic supplementation. Significant differences (P<0.01) were observed in HDL concentrations in all experimental groups supplemented with the probiotic when compared with the control group. In conclusion, supplementing broiler feeds with a yeast probiotic increased body weight, enhanced thyroid hormone metabolism, and decreased cholesterol and lipoproteins in broiler chickens.

Tissue lipid metabolism and hepatic metabolomic profiling in response to supplementation of fermented cottonseed meal in the diets of broiler chickens

“…Similar results of decreased abdominal fat by adding fermented products and yeast in the broiler chicken diets have been reported by Yamamoto et al (2007) and Aluwong et al (2013), respectively. A diet containing 1.5%-2.0% yeast (Aluwong et al, 2013) or 1% Koji-feed (fermented distillery by-product) (Yamamoto et al, 2007) resulted in significantly lower amounts of abdominal fat in broiler chickens.…”

Effect of Cottonseed Meal Fermented with Yeast on the Lipid-related Gene Expression in Broiler Chickens

“…The different effects of CSM and FCSM on the abdominal fat content are associated with many metabolic products, such as essential amino acids, small-size peptides, and vitamins present in FCSM (Nie et al, 2012;Tang et al, 2012). In addition, the probiotics present in FCSM may also influence lipid metabolism regulation (Kalavathy et al, 2003;Aluwong et al, 2013).…”

“…All of the aforementioned results caused by FCSM supplementation are attributed to metabolites (Højer-Pedersen et al, 2008) and probiotics (Aluwong et al, 2013) present in the fermented substrate. Microbial fermentation produces many metabolites, including exoenzymes, vitamins, organic acids, small peptides, and an unknown active substance (Højer-Pedersen et al, 2008;Nie et al, 2012;Johnson, 2013), which may regulate the lipid metabolism of animals.…”

“…Huang et al (2013) reported that the dietary supplementation of green tea polyphenols (extracted from tea plants) reduced abdominal and subcutaneous fat deposition in broiler chickens by regulating the expression of key genes related to lipid metabolism. Furthermore, Aluwong et al (2013) showed that the supplementation of a yeast probiotic in broiler feeds significantly decreased abdominal fat weight by 16.67% in the group fed 1.5% and by 28.626% in the group fed 2.0% compared with the controls. Therefore, these results indicate the potential of specific diets and dietary supplements to prevent excessive fat deposition in broiler carcasses.…”

Yeast with bacteriocin from ruminal bacteria enhances glucose utilization, reduces ectopic fat accumulation, and alters cecal microbiota in dietary-induced obese mice

“…Aluwong et al (2013) indicated that 5 g kg −1 yeast supplementation (S. cerevisiae) increased BW gain in broilers. In the preliminary study, we found that 0.125 μg YB per g BW (low dosage) caused the greatest lowering effect on BW, while the high dose of YB (0.625 μg YB per g BW) did not exhibit similar effects on DIO mice as the low dose of YB did.…”