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The effect of different grazing heights on carcass and meat quality characteristics of Nellore cattle fattened in pastures of Convert grass
Authors:Biserra  Thiago Trento  Cecato  Ulysses  Galbeiro  Sandra  Bridi  Ana Maria  Fernandes  Henrique Jorge  Duarte  Camila Fernandes Domingues  Da Silva  Diogo Rodrigues  Vicente  João Vitor Rosa  Rogel  Camila Piechnicki
Institution:1.Departamento de Zootecnia, Universidade Estadual de Maringá. UEM, Avenida Colombo, n. 5790, Maringá, Paraná, 87020-900, Brazil
;2.Departamento de Zootecnia, Universidade Estadual de Londrina, UEL, Rodovia Celso Garcia Cid - Pr 445 Km 380, Londrina, Paraná, 86057-970, Brazil
;3.Departamento de Zootecnia, Universidade Estadual de Mato Grosso do Sul, Rodovia Graziela Maciel Barroso , Km 12, Aquidauana, Mato Grosso do Sul, 79200000, Brazil
;
Abstract:

Carcass characteristic and meat quality from bulls and Nellore steers (n?=?64 total) subjected to different grazing heights (15, 25, 35, and 45 cm) were evaluated isolatedly, under continuous grazing and variable load, in pastures of Convert grass. The experimental period was from May 2015 to June 2017, in an area of 16 ha, divided into 16 paddocks of 1 ha. The experimental design was randomized blocks with four replications. Each paddock was grazed by three animals and regulators, used to adjust grazing heights. The final slaughter weight, hot carcass, and crude protein in the meat of steers were higher when the pastures were managed at 42 cm. When the pasture was managed between 25 and 35 cm in height, greater fat thickness, marbling, muscle:bone and muscle+fat:bone ratio and lower color* of the meat and percentage of bone were found. For the steers, the height of 40 cm provided higher fat thickness and marbling in the meat. The loss during thawing in meat was greater at 28 cm in height. The heights of grazing alter the carcass characteristics and meat of bulls and steers.

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