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https://hdl.handle.net/2440/112429
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dc.contributor.author | Kruk, Z. | - |
dc.contributor.author | Bottema, M. | - |
dc.contributor.author | Reyes-Veliz, L. | - |
dc.contributor.author | Forder, R. | - |
dc.contributor.author | Pitchford, W. | - |
dc.contributor.author | Bottema, C. | - |
dc.date.issued | 2018 | - |
dc.identifier.citation | Meat Science, 2018; 137:139-146 | - |
dc.identifier.issn | 0309-1740 | - |
dc.identifier.issn | 1873-4138 | - |
dc.identifier.uri | http://hdl.handle.net/2440/112429 | - |
dc.description.abstract | Twenty Angus steers were fed a diet low in β-carotene and vitamin A for 10months. Ten steers were supplemented with vitamin A weekly, while the other ten steers did not receive any additional vitamin A. The results demonstrated that the restriction of vitamin A intake increased intramuscular fat (IMF) by 46%. This was a function of the total number of marbling flecks increasing by 22% and the average marbling fleck size increasing by 14%. Vitamin A restriction resulted in marbling flecks that were less branched (22%) and slightly more round (4%) with an increased minor axis length (7%). However, restricting vitamin A did not affect the size of the intramuscular or subcutaneous adipocyte cells or the subcutaneous fat depth. The results suggest that vitamin A affects the amount of marbling and other attributes of the marbling flecks due to hyperplasia rather than hypertrophy. This may explain why vitamin A restriction specifically affects IMF rather than subcutaneous fat deposition. | - |
dc.description.statementofresponsibility | Z.A. Kruk, M.J. Bottema, L. Reyes-Veliz, R.E.A. Forder, W.S. Pitchford, C.D.K. Bottema | - |
dc.language.iso | en | - |
dc.publisher | Elsevier | - |
dc.rights | © 2017 Elsevier Ltd. All rights reserved. | - |
dc.source.uri | http://dx.doi.org/10.1016/j.meatsci.2017.11.024 | - |
dc.subject | Adipocytes | - |
dc.subject | Beef | - |
dc.subject | Cattle | - |
dc.subject | Computer image analysis | - |
dc.subject | Intramuscular fat | - |
dc.subject | Retinoids | - |
dc.title | Vitamin A and marbling attributes: intramuscular fat hyperplasia effects in cattle | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1016/j.meatsci.2017.11.024 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Forder, R. [0000-0002-6125-4245] | - |
dc.identifier.orcid | Pitchford, W. [0000-0002-5213-3978] | - |
dc.identifier.orcid | Bottema, C. [0000-0001-6245-0099] | - |
Appears in Collections: | Animal and Veterinary Sciences publications Aurora harvest 8 |
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