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BIBTEX RIS

Feeding strategies impact animal growth and beef color and tenderness

2021; Elsevier BV; Volume: 183; Linguagem: Inglês

10.1016/j.meatsci.2021.108599

1873-4138

Juan Fernando Morales Gómez, Daniel Silva Antonelo, Mariane Beline, Bruna Pavan, Danilo Brito Bambil, Paulo Fantinato Neto, Arlindo Saran‐Netto, Paulo Roberto Leme, Rodrigo Silva Goulart, David E. Gerrard, Saulo da Luz e Silva,

Ruminant Nutrition and Digestive Physiology

The impact of growth rate (GR) and finishing regime (FR) on growth and meat quality traits of Angus x Nellore crossbred steers, harvested at a constant body weight (530 ± 20 kg) or time on feed (140 days), was evaluated. Treatments were: 1) feedlot, high GR; 2) feedlot, low GR; 3) pasture, high GR and 4) pasture, low GR. Live body composition, carcass and meat quality traits were evaluated. High GR had greater impact on muscle and fat deposition in feedlot-finished, but not in pasture-finished animals. Feedlot animals had higher Longissimus muscle area, backfat thickness, meat luminosity and tenderness when compared to pasture groups. Moreover, pasture- and feedlot-finished animals with similar GR did not differ in the chromatic attributes of non-aged meat, regardless of endpoint. Thus, GR appeared to be the main factor driving beef chromatic parameters, while FR had a major impact on achromatic attributes and tenderness of meat.