Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/51889
Title: The impact of different Hormonal Growth Promotants (HGP) on desmin degradation and collagen content of various muscles from pasture and feedlot finished steer carcasses
Contributor(s): Packer, D T  (author); Geesink, G H  (author); Thompson, J M  (author); Polkinghorne, R J  (author); Ball, A B (author); McGilchrist, P  (author)orcid 
Publication Date: 2021-12
Early Online Version: 2021-06-24
DOI: 10.1016/j.meatsci.2021.108615
Handle Link: https://hdl.handle.net/1959.11/51889
Abstract: 

The impacts of several hormonal growth promotants (HGP) on Warner-Bratzler Shear Force (WBSF), desmin degradation ratio (DDR) and collagen content (COLL) were assessed. Treatments within feedlot and pasture finished steer carcasses (n = 60, n = 40, respectively) were control (CON-100-F and CON-400-P), oestradiol HGPs (OES-100-F and OES-400-P) and trenbolone acetate/oestradiol HGPs (TBA+OES-100-F only). The longissimus lumborum (LL), gluteus medius (GM), infraspinatus (IS), semitendinosus (ST,) and the LL and biceps femoris (BF) were collected from feedlot and pasture finished steers, respectively. All muscles were aged between 3 and 35 days. The LL from TBA+OES-100-F carcasses had increased WBSF and decreased DDR, which varied in magnitude with ageing (P < 0.05). The GM from OES-100-F steers also had lower DDR (P < 0.05). The feedlot HGP treatments had no impact on the WBSF of the IS, ST or GM and no impact on COLL in the LL. The OES-400-P had no impact on WBSF, DDRor COLL for both muscles (P > 0.05).

Publication Type: Journal Article
Source of Publication: Meat Science, v.182, p. 1-8
Publisher: Elsevier BV
Place of Publication: Netherlands
ISSN: 1873-4138
0309-1740
Fields of Research (FoR) 2020: 300303 Animal nutrition
Socio-Economic Objective (SEO) 2020: 280101 Expanding knowledge in the agricultural, food and veterinary sciences
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
Appears in Collections:Journal Article
School of Environmental and Rural Science

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