Levels of energy supplementation for heifers in Tifton 85 pasture on carcass characteristics, internal organs and meat quality.

Autor:	Silva MAD; Universidade Federal do Rio Grande do Sul, Departamento de Zootecnia, Av. Bento Gonçalves, 7712, Agronomia, 91540-000 Porto Alegre, RS, Brazil., Alves Filho DC; Universidade Federal de Santa Maria, Departamento de Zootecnia, Av. Roraima, 1000, Prédio 78, Camobi, 97105-900 Santa Maria, RS, Brazil., Machado DS; Instituto Federal de Educação, Ciência e Tecnologia Farroupilha, Campus Alegrete, RS 377, Km 27, Passo Novo, 97555-000 Alegrete, RS, Brazil., Martini APM; Faculdade da Amazônia, Rua Walisson José Arrigo, 2043, Cristo Rei, 76983-498 Vilhena, RO, Brazil., Cardoso GS; Universidade Federal de Santa Maria, Departamento de Zootecnia, Av. Roraima, 1000, Prédio 78, Camobi, 97105-900 Santa Maria, RS, Brazil., Brondani IL; Universidade Federal de Santa Maria, Departamento de Zootecnia, Av. Roraima, 1000, Prédio 78, Camobi, 97105-900 Santa Maria, RS, Brazil., Cocco JM; Universidade Federal de Santa Maria, Departamento de Zootecnia, Av. Roraima, 1000, Prédio 78, Camobi, 97105-900 Santa Maria, RS, Brazil., Cattelam PMM; Universidade Federal de Santa Maria, Departamento de Zootecnia, Av. Roraima, 1000, Prédio 78, Camobi, 97105-900 Santa Maria, RS, Brazil.
Jazyk:	angličtina
Zdroj:	Anais da Academia Brasileira de Ciencias [An Acad Bras Cienc] 2023 Nov 20; Vol. 95 (4), pp. e20190309. Date of Electronic Publication: 2023 Nov 20 (Print Publication: 2023).
DOI:	10.1590/0001-3765202320190309
Abstrakt:	The objective of this study was to evaluate the effect of different levels of concentrate supplementation on carcass characteristics of heifers finished on Tifton 85 pasture. Thirty-two cross-breed heifers (Charolais and Nellore) on average aged 25.51 months and weighing 298 kg were used in a completely randomized experiment. The animals were distributed uniformly to receive four different levels of concentrates based on the body weight: 0.0; 0.4; 0.8 and 1.2%. Animals were slaughtered at 29 months of age. There was increasing linear effect of levels energy supplementation on: slaughter weight, hot and cold carcass weights,hot and cold dressing percentage, thigh thickness, carcass compactness, and L* and b* color values. It was observed quadratic effect of levels of energy supplementation on the percentage of fat in the carcass. Different levels of energy supplementation did not modify the accumulation of vital organs and visceral fat or the sensory attributes of the meat. Higher levels of energy supplementation promote increases in carcass traits of heifers when finished on Tifton 85 pasture.
Databáze:	MEDLINE
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