Carcass characteristics and meat quality of lambs fed high concentrations of crude glycerin in low-starch diets

Autor(es)

Carvalho, V. B. ^[1] ; Leite, R. F. ^[1] ; Almeida, M. T. C. ^[1] ; Paschoaloto, J. R. ^[1] ; Carvalho, E. B. ^[2] ; Lanna, D. P. D. ^[3] ; Perez, H. L. ^[1] ; Van Cleef, E. H. C. B. ^[1] ; Homem Junior, A. C. ^[1] ; Ezequiel, J. M. B. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista Julio de Mesquita Filho Un, Dept Anim Sci, BR-14884900 Jaboticabal, SP - Brazil

^[2] Univ Fed Lavras UFLA, Dept Anim Sci, BR-37200000 Lavras, MG - Brazil

^[3] Escola Super Agr Luiz de Queiroz ESALQ USP, Dept Anim Sci, BR-13418900 Piracicaba, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: MEAT SCIENCE; v. 110, p. 285-292, DEC 2015.
• Citações Web of Science: 16

Resumo

In this study, we evaluated the effects of total corn replacement with crude glycerin on carcass characteristics and meat quality of feedlot lambs fed high-concentrate diets with low starch. Forty non-castrated Santa Ines lambs (23.5 +/- 3.56 kg BW) were assigned to a randomized complete block design with five dietary treatments: 0%, 7.5%, 15%, 22.5%, or 30% crude glycerin, replacing corn. Animals were slaughtered at a BW of 38 kg after 72 +/- 20 days. The addition of up to 30% crude glycerin reduced carcass weight and yield (P <= 0.02). Odd-chain fatty acids, oleic, palmitoleic, total unsaturated, and monounsaturated fatty acids were increased (P <= 0.01) while CIA tended to increase in glycerin-fed lambs (P = 0.06). Crude glycerin decreased stearic, palmitic, transvaccenic, total saturated fatty acids, and atherogenicity index (P < 0.01). High concentrations of crude glycerin in low-starch diets reduced carcass weights, nevertheless improved meat quality by increasing unsaturated and oddchain fatty acid contents. (C) 2015 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 13/15341-8 - Resposta de cordeiros confinados recebendo glicerina bruta em substituição total ao milho ou associada com diferentes fontes energéticas
• Beneficiário: Jane Maria Bertocco Ezequiel
• Modalidade de apoio: Auxílio à Pesquisa - Regular