<b>Effect of rib fat thickness on the quality of aged meat from Nellore young bulls

Erick Escobar Dallantonia; Josiane Fonseca Lage; Lais Regina Simonetti; Elias San Vito; Lutti Maneck Dellevatti; Telma Teresinha Berchielli

doi:10.4025/actascianimsci.v37i2.25694

Erick Escobar Dallantonia Universidade Estadual Paulista "Júlio de Mesquita Filho"
Josiane Fonseca Lage Bellman, Trouw Nutrition Brazil
Lais Regina Simonetti Universidade Estadual Paulista "Júlio de Mesquita Filho"
Elias San Vito Universidade Estadual Paulista "Júlio de Mesquita Filho"
Lutti Maneck Dellevatti Universidade Estadual Paulista "Júlio de Mesquita Filho"
Telma Teresinha Berchielli Universidade Estadual Paulista "Júlio de Mesquita Filho"

DOI: https://doi.org/10.4025/actascianimsci.v37i2.25694

Palavras-chave: aging, longissimus, subcutaneous fat.

Resumo

This trial aimed to evaluate the quality of aged beef from Nellore young bulls under two yield grade (YG). Fourteen animals with approximately 450 ± 30 kg body weight were evaluated for backfat thickness (BFT) at the beginning of the experimental period. Seven animals had BFT of 0-3 mm and seven animals, 3.1-6 mm. Two groups were formed at the end of the experiment: animals finished with 3-6 mm BFT (seven animals) and animals finished with 6.1 to 10 mm BFT (seven animals). Every 28 days, we evaluated by ultrasound the BFT between the 12^nd 13^rd ribs. There was no interaction between YG and aging for beef color, pH, cooking losses and shear force (p > 0.05). There was no effect of YG on sarcomere length (p = 0.11). However, there was interaction between YG and aging on water holding capacity (p < 0.01). The yield grades evaluated did not interfere with meat quality, but carcasses with 6.1 - 10 mm of backfat thickness showed highest water holding capacity. The aging of the longissimus muscle for up to 14 days improves beef tenderness.

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Biografia do Autor

Erick Escobar Dallantonia, Universidade Estadual Paulista "Júlio de Mesquita Filho"

Zootecnista, Aluno de Mestrado da Unesp-Jaboticabal em Produção de Ruminantes

Josiane Fonseca Lage, Bellman, Trouw Nutrition Brazil

Zootecnista. Dr. em Nutrição e Produção de Ruminantes

Supervisora de P&D em Ruminantes da Bellman / Nutreco Animal Nutrition

Lais Regina Simonetti, Universidade Estadual Paulista "Júlio de Mesquita Filho"

Zootecnista, Aluna de Mestrado da Unesp-Jaboticabal em Produção de Ruminantes

Elias San Vito, Universidade Estadual Paulista "Júlio de Mesquita Filho"

Zootecnista, Dr. em Produção Animal pela UNESP-Jaboticabal

Lutti Maneck Dellevatti, Universidade Estadual Paulista "Júlio de Mesquita Filho"

Zootecnista, Aluno de Mestrado da Unesp-Jaboticabal em Produção de Ruminantes

Telma Teresinha Berchielli, Universidade Estadual Paulista "Júlio de Mesquita Filho"

Professor Adjunto do Departamento de Zootecnia da Unesp-Jaboticabal

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