Effects of purified glycerin in balanced diets of chicken broilers treated from 22 to 42 days of age1

Mônica Calixto da Silva, Roberta Gomes Marçal Vieira Vaz, Kênia Ferreira Rodrigues, Gerson Fausto da Silva, Luciano Fernandes Sousa, Flávia Luzia Rodrigues Fonseca, Carla Fonseca Alves Campos, Wescley Faccini Augusto, Iberê Pereira Parente, Latóya de Sousa Bezerra

Abstract


The aim of this study was to investigate the effects of including purified glycerin in the diets of broilers from 22 to 42 days of age. Eighty Cobb 500® lineage broilers were distributed in a completely randomized design (CRD) to one of four treatment groups (0, 2, 4 and 6% of purified glycerin inclusion in feed) and five replicates of four birds. The birds were evaluated for performance (weight gain, feed intake and feed conversion); carcass yield; special cuts yield (thigh, drumstick and breast); muscle colour (L* = lightness, a* = redness, b* = yellowness); and crude protein, ether extract and moisture content of the breast muscle. Inclusion of purified glycerin in the diet did not affect (p > 0.05) any of the growth performance indicators, which demonstrated the technical feasibility of including up to 6% glycerin in the diet. Similarly, there was no effect on carcass yield; special-cut yields; muscle colour (L* = lightness, a* = redness, b* = yellowness); or crude protein, ether extract and moisture content of breast muscle. The inclusion of purified glycerin at up to 6% in the diet proved to be feasible in broilers treated from 22 to 42 days of age.

Keywords


Biodiesel by-products; High-energy feed; Meat quality; Growth performance.

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DOI: http://dx.doi.org/10.5433/1679-0359.2017v38n4p2083

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional