Journal
MEAT SCIENCE
Volume 89, Issue 4, Pages 412-418Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.meatsci.2011.05.003
Keywords
Vitamin A; Castration; TBARS; Marbling; Beef
Categories
Funding
- ICREA Funding Source: Custom
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Twenty-four Holstein steers and 23 Holstein bulls (initial body weight = 252 +/- 3.5 kg and age = 187 +/- 7.5 d) were randomly allocated to 4 treatments arranged in a 2 x 2 factorial design with gender (bulls vs steers) and vitamin A supplementation (either restricted at 1.3 x1000 IU/kg, VAR, or supplemented at 4.6x 1000 IU/kg, CTR) to evaluate the effect of vitamin A restriction on performance, carcass and meat quality traits of Holstein steers and bulls. Intramuscular fat was less (P<0.01) in bulls than in steers, and tended (P=0.09) to be greater in VAR than in CTR animals. Oxidative stability tended (P= 0.09) to be greater in meat from VAR than from CTR animals at 21 d of ageing. Vitamin A restriction in Holstein bulls does not achieve the same intramuscular fat levels obtained with castration. (C) 2011 Elsevier Ltd. All rights reserved.
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