Sugarcane yeast inclusion for broilers at post-hatch

Revista Brasileira de Zootecnia (Print)

Ludke, Maria do Carmo Mohaupt Marques¹  Silva, Jaqueline de Cássia Ramos da¹  Arruda, Emmanuele Maria Florêncio de¹  Dutra Junior, Wilson Moreira¹  Rabello, Carlos Bôa-Viagem¹  Lopes, Cláudia da Costa² 

[1] Universidade Federal Rural de Pernambuco, Recife, Brazil;Universidade Federal do Amazonas, Parintins, Brazil

关键词: body composition;    broiler;    intestinal morphology;    performance;    Saccharomyces cerevisiae.;   

DOI  :  10.1590/s1806-92902017001200008

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

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.

【 授权许可】

Unknown