title: Effect of biotin supplementation on meat quality of F1 Wagyu/Black Angus feedlot steers of known genotype.
abstract: Biotin (D-biotin) was supplemented to F1 Wagyu/Black Angus steers fed a wheat-based ration to evaluate the effect on meat quality. One hundred and eight steers of known Wagyu sire lines were assigned to three biotin treatments (0, 10 and 20mg/head/day) with each treatment replicated four times using an unfasted liveweight of 410.5kg (±24.42 SD). Biotin supplementation had no effect (P>0.05) on beef marbling standard at either the 5/6th or 10/11th rib quartering site, 10/11th rib intra-muscular fat percentage, intra-muscular fat fatty acid composition or adipose melting points. Wagyu genotype had an effect (P<0.05) on beef marbling standard and intra-muscular fat percentage at the 10/11th rib, inter-muscular and intra-muscular melting point and fatty acid composition of intra-muscular fat. A significant (P<0.001) but poor correlation existed between beef marbling standard and intra-muscular fat percentage (R(2)=0.198). Total conjugated linoleic acid had a highly significantly (P<0.0001) positive correlation to intra-muscular fat percentage (R(2)=0.446).
authors: Schools of Veterinary Science and Animal Studies, University of Queensland, Qld. 4072, Australia; Integrated Animal Production, P.O. Box 1821, Toowoomba, Qld. 4350, Australia.
authors: R J
authors: RJ
authors: Lawrence
authors: J C
authors: JC
authors: Doyle
authors: R
authors: R
authors: Elliott
authors: B W
authors: BW
authors: Norton
authors: I
authors: I
authors: Loxton