Supplemental β-carotene I: Effect on plasma vitamin A, growth, performance, and carcass characteristics of feedlot cattle

To evaluate the effects of β-carotene (βC) on performance and carcass characteristics, 112 crossbred calves were allotted to 4 treatments consisting of retinyl palmitate (RP) supplemented at 2200IU/kg, and synthetic β-carotene supplemented at 1 (SβC1X), 5 (SβC5X), or 10 (SβC10X) times RP. Compared t...

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Bibliographic Details
Published in:Meat science 2014-12, Vol.98 (4), p.736-743
Main Authors: Condron, K.N., Lemenager, R.P., Claeys, M.C., Lipkie, T.E., Schoonmaker, J.P.
Format: Article
Language:English
Subjects:
Animal Feed
Animals
Beef
beta Carotene - blood
Cattle
Diet - veterinary
Dietary Supplements
Female
Male
Marbling
Meat - analysis
Vitamin A
Vitamin A - blood
β-carotene
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Summary:To evaluate the effects of β-carotene (βC) on performance and carcass characteristics, 112 crossbred calves were allotted to 4 treatments consisting of retinyl palmitate (RP) supplemented at 2200IU/kg, and synthetic β-carotene supplemented at 1 (SβC1X), 5 (SβC5X), or 10 (SβC10X) times RP. Compared to RP, SβC1X did not impact performance (P≥0.25) or plasma concentrations of retinoids or carotenoids (P≥0.26). Increasing dietary βC increased (P≤0.04) plasma concentrations of RP and all of the isomers of βC, but did not affect weight, gain, or gain:feed (P≥0.24). Marbling and fat thickness did not differ between RP and SβC1X or because of amount of βC (P≥0.35). Lightness (L*) of LM decreased with increasing concentration of SβC (linear; P=0.01). Yellowness (b*) increased (P=0.04) and redness (a*) tended to increase (P=0.09) in subcutaneous fat as SβC amount increased (quadratic).
ISSN:0309-1740
1873-4138
DOI:10.1016/j.meatsci.2014.07.020