Sugarcane yeast inclusion for broilers at post-hatch

Abstract

-A total of 450 one-day-old male broiler chicks were used to evaluate the effect of the sugarcane yeast on performance, body composition, and development of the intestinal mucosa. The experiment was carried out in a completely randomized design with five treatments and six replicates of 15 birds. Sugarcane yeast was included in the experimental diets at the levels of 0, 12.5, 25.0, 37.5, and 50.0 g kg −1 . Body weight, weight gain, feed intake, and feed conversion were determined. At the end of the experiment, four broiler chicks were slaughtered per experimental unit: two were used for evaluation of moisture content, crude protein, fat, and body ash and the other two were used in the collection of small-intestine segments for evaluation of villus height and crypt depth. The increasing yeast levels resulted in a linear increase in feed intake and feed conversion. Inclusion of more than 14.4 g kg −1 yeast resulted in a reduction of body ash content. Villus height and crypt depth in the jejunum showed maximum values at the sugarcane yeast levels of 20.9 and 20.6 g kg −1 , respectively. In the ileum, the crypt depth reduction at the level of 25.6 g kg −1 also resulted in an increase in villus:crypt ratio. Yeast inclusion increases feed intake and feed conversion, improves body mineral absorption, and increases villus height in the jejunum and the villus:crypt ratio in the ileum of broiler chicks.

Levedura de cana-de-açúcar (Saccharomyces cerevisiae) e enzima β-mananase em dietas para frangos de corte

“…Due to the seasonality of production and the variation in prices of corn and soybean meal, many researchers have evaluated agro-industrial byproducts that can be used as alternative ingredients for broiler chicken feed. Among these ingredients, sugarcane yeast (Saccharomyces cerevisiae) stands out as a high-quality protein source with components that act on the intestinal mucosa, improving nutrient absorption and, consequently, the performance of broiler chickens (Lopes et al, 2017).…”