Dietary supplementation with hydrolyzed yeast and its effect on the performance, intestinal microbiota, and immune response of weaned piglets

Abstract

The objective of this study was to evaluate the effects of autolyzed yeast on performance, cecal microbiota, and leukogram of weaned piglets. A total of 96 piglets of commercial line weaned at 21-day-old were used. The experimental design was a randomized block design with four treatments (diets containing 0.0%, 0.3%, 0.6%, and 0.9% autolyzed yeast), eight replicates, and three animals per pen in order to evaluate daily weight gain, daily feed intake, and feed conversion in periods of 0 to 15, 0 to 26, and 0 to 36 days. Quadratic effects of autolyzed yeast inclusion were observed on the feed conversion from 0 to 15 days, on daily weight gain from 0 to 15 days, 0 to 26 days and, 0 to 36 days, indicating an autolyzed yeast optimal inclusion level between 0.4% and 0.5%. No effect from autolyzed yeast addition was observed on piglet daily feed intake, cecal microbiota, and leukogram; however, i.m. application of E. coli lipopolysaccharide reduced the values of total leukocytes and their fractions (neutrophils, eosinophils, lymphocytes, monocytes, and rods). Therefore, autolyzed yeast when provided at levels between 0.4% and 0.5% improved weaned piglets' performance.

Hydrolyzed Yeast Supplementation to Newly Weaned Piglets: Growth Performance, Gut Health, and Microbial Fermentation

“…Several previous studies have shown the positive effects of yeast cells and the extracts from S. cerevisiae on the growth performance of weaning pigs [14,15]. This is in line with the improvements of ADG, ADFI, and G:F ratio in early-weaning piglets fed HY-supplemented diet with increasing inclusion levels.…”

“…In this study, we observed reductions in IL1, IL6, and TNFα on day 14, inconsistent with previous finding [28], whereby significant changes in IL1 and IL6 secretion were not observed. The discrepancies in the findings may be attributed to the HY source and their composition, while the included level, experimental challenge, and weaning age of piglets could also be contributing factors [15,28,29].…”

Chemical composition and standardized ileal digestibility of crude protein and amino acid in whole yeast and autolyzed yeast derived from sugarcane ethanol production fed to growing pigs

“…Test product 47.86 -Corn starch 1) 36.42 66.28 Dextrose 2) 9.00 20.00 Cellulose 3) 2.00 5.00 Soybean oil 4) 2.00 4.00 Calcium carbonate 0.99 -Monodicalcium phosphate 5) 0.60 3.00 Vitamin and mineral premix 6) 0.30 0.30 Sodium chloride 0.30 0.40 Vitamin E 7) 0.03 0.02 Magnesium oxide 8) -0.10 Potassium carbonate 9) -0.40 Chromic oxide 0.50 0.50 1) Xingmao, Zhucheng Xingmao Corn Developing Co. Ltd., Weifang, China.…”

“…4) Thai Vegetable Oil Public Company Limited, Thonburi, Bangkok. 5) Chanhen, Guizhou Chanhen Chemical Corporation, Fuquan, China. .…”

“…This process is commonly performed using Saccharomyces cerevisiae as this yeast strain has high potential for fermenting sugar to produce a high ethanol concentration [ 3 ]. As the yeast biomass is a rich source of nutritional values, including protein, peptides, amino acids (AA), carbohydrate, fatty acids, vitamins and minerals [ 4 ], the sugarcane yeast derived from ethanol production can be included in animal feed as an alternative protein source [ 5 ].…”