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

• Published in: Anais da Academia Brasileira de Ciências 2020-01, Vol.92 (suppl.1), p.e20180969-e20180969
• Main Authors: Berto, Patrícia, Livio Panhoza Tse, Marcos, Avistá Ramos, Denis Ricardo, A. D. Saleh, Mayra, de Mello Miassi, Gabriela, Yamatogi, Ricardo Seiti, Antonio Berto, Dirlei, Trindade Neto, Messias Alves da Trindade Neto
• Format: Article
• Language: English
• Subjects: Immune system; Leukogram; MULTIDISCIPLINARY SCIENCES; Nutrition; Swine; Weaning
• ISSN: 0001-3765; 1678-2690; 1678-2690
• DOI: 10.1590/0001-3765202020180969

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.