학술논문
Characteristics of intramuscular collagen in calf-fed Nellore bulls and steers throughout the finishing phase.
Document Type
Academic Journal
Author
da Silva JC; Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.; Silva LHP; Department of Agriculture and Food Science, Western Kentucky University, Bowling Green, KY 42101-1066, USA.; de Souza MV; Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.; Coelho PGB; Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.; de Castro Nunes CL; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.; da Silva W; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.; Assis DEF; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.; da Silva Martins T; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.; Chizzotti ML; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil.; Guimarães SEF; Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil; Department of Animal Science, Universidade Federal de Viçosa, Viçosa, MG 36570-900, Brazil. Electronic address: sfacioni@ufv.br.
Source
Publisher: Elsevier Country of Publication: England NLM ID: 101160862 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-4138 (Electronic) Linking ISSN: 03091740 NLM ISO Abbreviation: Meat Sci Subsets: MEDLINE
Subject
Language
English
Abstract
This study evaluated collagen solubility and gene expression of biomarkers for intramuscular collagen (IMCT) deposition and remodeling in the Longissimus muscle of bulls and steers through the finishing phase. Thirty-six Nellore calves were used (18 bulls and 18 steers), and six of each sexual condition were randomly assigned to be harvested at 0, 100, or 200 days on feed (DOF) to evaluate collagen characteristics in different time points throughout the finishing phase. Bulls showed a greater collagen solubility than steers (P = 0.03). The gene expression of fibrogenic markers (TGFβ1, COL1A1, and COL3A1) and IMCT remodeling mediators (MMPII, TIMPII, and LOX) were not affected by sexual condition or DOF (P > 0.05). Our data indicate that young Nellore bulls have a higher percentage of soluble intramuscular collagen, possibly due to higher collagen remodeling associated with a faster growth rate and muscle hypertrophy. Moreover, castration and DOF did not modify mRNA levels of fibrogenic and collagen remodeling markers.
Competing Interests: Declaration of Competing Interest The authors declare no conflict of interest.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Competing Interests: Declaration of Competing Interest The authors declare no conflict of interest.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)