TY - JOUR
T1 - Influence of yeast cell wall supplementation during the finishing phase on feedlot steer performance, carcass characteristics, and postmortem tenderness
AU - Aragon, S. N.
AU - Ribeiro, F. R.B.
AU - Hosford, A. D.
AU - Thompson, A. J.
AU - Hergenreder, J. E.
AU - Jennings, M. A.
AU - Corley, J. R.
AU - Johnson, B. J.
N1 - Publisher Copyright:
© 2016 American Registry of Professional Animal Scientists.
PY - 2016/4/1
Y1 - 2016/4/1
N2 - Our objectives were to evaluate the benefits of yeast cell wall (YCW) supplementation on performance, carcass characteristics, and tenderness of steers finished with zilpaterol hydrochloride. A randomized complete block design was used. British × Continental steers (n = 72; initial BW = 305 ± 13 kg) were blocked by BW and allotted randomly to 24 pens (8 pens per treatment; 3 pens per block; 3 steers per pen). Treatments were (1) control (CON); (2) YCW containing 100,000 IU of vitamin D2 per gram (5.0 g per steer per d; Y-D); (3) YCW C (5.0 g per steer per d; Y-C). Steers were supplemented 55 d, and zilpaterol hydrochloride was fed on d 30 to 49. Carcass data and strip loins were obtained. Strips were cut into steaks and assigned to 1 of 4 aging periods (7, 14, 21, or 28 d). Tenderness was examined using Warner-Bratzler shear force. Carcass-adjusted ADG from d 21 to 55 was 0.29 kg greater for Y-D and 0.35 kg greater for Y-C, when compared with CON (P = 0.04 and 0.01, respectively). Additionally, YCW increased G:F from d 21 to 55 by 28.46% for Y-C over CON (P = 0.01). Treatment Y-C displayed Warner-Bratzler shear force values 0.30 kg higher than CON and 0.29 kg greater than Y-D (P < 0.01). Within 7 d of aging, Y-C steaks were 0.62 kg (P = 0.005) and 0.54 kg (P = 0.014) less tender than CON or Y-D, respectively. For 14 d of aging steaks, Y-C Warner-Bratzler shear force values were 0.58 kg greater than CON (P = 0.008). These data indicate YCW supplementation could improve performance of finishing steers, and vitamin D2 supplementation at the current dosage did not improve tenderness.
AB - Our objectives were to evaluate the benefits of yeast cell wall (YCW) supplementation on performance, carcass characteristics, and tenderness of steers finished with zilpaterol hydrochloride. A randomized complete block design was used. British × Continental steers (n = 72; initial BW = 305 ± 13 kg) were blocked by BW and allotted randomly to 24 pens (8 pens per treatment; 3 pens per block; 3 steers per pen). Treatments were (1) control (CON); (2) YCW containing 100,000 IU of vitamin D2 per gram (5.0 g per steer per d; Y-D); (3) YCW C (5.0 g per steer per d; Y-C). Steers were supplemented 55 d, and zilpaterol hydrochloride was fed on d 30 to 49. Carcass data and strip loins were obtained. Strips were cut into steaks and assigned to 1 of 4 aging periods (7, 14, 21, or 28 d). Tenderness was examined using Warner-Bratzler shear force. Carcass-adjusted ADG from d 21 to 55 was 0.29 kg greater for Y-D and 0.35 kg greater for Y-C, when compared with CON (P = 0.04 and 0.01, respectively). Additionally, YCW increased G:F from d 21 to 55 by 28.46% for Y-C over CON (P = 0.01). Treatment Y-C displayed Warner-Bratzler shear force values 0.30 kg higher than CON and 0.29 kg greater than Y-D (P < 0.01). Within 7 d of aging, Y-C steaks were 0.62 kg (P = 0.005) and 0.54 kg (P = 0.014) less tender than CON or Y-D, respectively. For 14 d of aging steaks, Y-C Warner-Bratzler shear force values were 0.58 kg greater than CON (P = 0.008). These data indicate YCW supplementation could improve performance of finishing steers, and vitamin D2 supplementation at the current dosage did not improve tenderness.
KW - Cattle
KW - Tenderness
KW - Yeast cell wall
KW - Zilpaterol hydrochloride
UR - http://www.scopus.com/inward/record.url?scp=84977485360&partnerID=8YFLogxK
U2 - 10.15232/pas.2015-01417
DO - 10.15232/pas.2015-01417
M3 - Article
AN - SCOPUS:84977485360
VL - 32
SP - 192
EP - 200
JO - Professional Animal Scientist
JF - Professional Animal Scientist
SN - 1080-7446
IS - 2
M1 - 50002606
ER -