Performance and meat quality of broilers fed different levels of alpha-tocopherol

Latóya de Sousa Bezerra, Roberta Gomes Marçal Vieira Vaz, Mônica Calixto da Silva, Kênia Ferreira Rodrigues, Luiz Fernando Teixeira Albino, Hérica de Araujo Costa, Aleane Francisca Cordeiro Barbosa, Mayara da Cruz Ribeiro, Jerry Kleube Felix Monteiro Junior, Magna Ferreira de Oliveira

Abstract


This study aimed to evaluate the performance and meat quality of broilers fed different levels of alpha-tocopherol. A total of 240 one-day-old Cobb 500® male broiler chicks were reared until day 7 of life, as recommended by the commercial line, and were fed at only 50% of the alpha-tocopherol requirement. At day 8, the chicks were weighed, homogenized, and allotted in a completely randomized design with four treatments (50, 100, 150, and 200% alpha-tocopherol requirement) and six replicates of ten chickens per experimental unit. Several variables were evaluated: weight gain, feed intake, feed conversion, carcass yield and prime cuts (drumstick, thigh, and breast), edible viscera (heart, liver, gizzard), immune organs (cloacal bursa and spleen), intestine weight and length, abdominal fat, breast meat color (lightness, redness, and yellowness), pH, cooking loss, and shear force of the breast meat. Dietary alpha-tocopherol levels did not influence broiler performance, carcass yield, and prime cuts at 42 days of age. The edible viscera, immune organs, the length of the small intestine, and the abdominal fat, as well as the meat color (lightness, redness, and yellowness), pH, cooking loss, and shear force of the breast meat, were not influenced. However, the small intestine yield increased linearly with increasing levels of alpha-tocopherol. The dietary levels of alpha-tocopherol did not influence the performance and meat quality of broilers from 8 to 42 days of age.

Keywords


Antioxidant; Micronutrient; Productive performance; Carcass yield; Vitamin E.

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References


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DOI: http://dx.doi.org/10.5433/1679-0359.2021v42n3Supl1p1941

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