PMID- 32743347
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200928
IS  - 2573-2102 (Electronic)
IS  - 2573-2102 (Linking)
VI  - 4
IP  - 2
DP  - 2020 Apr
TI  - Effect of oscillating feeding time and corn processing on performance and carcass 
      characteristics of feedlot steers.
PG  - 974-979
LID - 10.1093/tas/txaa103 [doi]
AB  - The objectives of this experiment were to evaluate the effect of oscillating 
      feeding time (OFT) and corn processing (CoP) on performance and carcass 
      characteristics of feedlot cattle. One hundred sixty-five steers (initial body 
      weight [BW] 277.2 +/- 27.80 kg) were blocked by initial BW and allotted to 24 pens. 
      Pens within each block were randomly assigned based on a 2 x 2 factorial 
      arrangement of treatments. The two factors were CoP (whole shelled corn vs. 
      ground corn [GC]) and feeding time (FT) (constant FT vs. 2 hours OFT). Animals 
      were fed the same diet, only changing the CoP method depending on the treatment. 
      Feed offered and feed refusals were collected daily. Body weight was collected at 
      starting day of the experiment (d1) and every 28 d until the end of the 
      experiment. At the end of the experiment, animals were harvested in a commercial 
      slaughter facility, and carcass data were collected by a USDA grader. Animal 
      growth performance and carcass characteristics data were analyzed with the PROC 
      Mixed procedure (SAS) using CoP, FT, and their interaction as fixed variables; 
      and treatments x pen within each block and block were considered random 
      variables. There was no CoP by FT interaction differences (P > 0.10) on animal 
      growth performance variables, nor on hot carcass weight, back fat, rib eye area, 
      or the percentage of kidney, pelvic, and heart fat. There was a tendency for an 
      interaction (P = 0.08) for marbling score, where the steers from the GC 
      processing fed on the oscillating time had a lesser marbling score than the other 
      three treatments. Oscillating feeding time improved (P = 0.05) average daily 
      gain; but did not affect (P >/= 0.11) dry matter intake (DMI), nor carcass 
      characteristics compared with feeding at a similar time every day. There were no 
      effects (P >/= 0.11) of CoP on growth performance, nor carcass characteristics. In 
      conclusion, a 2-hour oscillation in FT might not decrease steer feedlot 
      performance. This may be due to the high degree of control of DMI with feed bunk 
      management.
CI  - (c) The Author(s) 2020. Published by Oxford University Press on behalf of the 
      American Society of Animal Science.
FAU - Relling, Alejandro E
AU  - Relling AE
AUID- ORCID: 0000-0002-1288-3037
AD  - Department of Animal Sciences, The Ohio State University, Wooster, OH.
FAU - Clevenger, David Douglas
AU  - Clevenger DD
AD  - Department of Animal Sciences, The Ohio State University, Wooster, OH.
FAU - Fluharty, Francis L
AU  - Fluharty FL
AD  - Department of Animal and Dairy Science, University of Georgia, Athens, GA.
LA  - eng
PT  - Journal Article
DEP - 20200626
PL  - England
TA  - Transl Anim Sci
JT  - Translational animal science
JID - 101738705
PMC - PMC7390510
OTO - NOTNLM
OT  - alternate feeding time
OT  - bunk management
OT  - corn processing
OT  - mixing variability
EDAT- 2020/08/04 06:00
MHDA- 2020/08/04 06:01
PMCR- 2020/06/26
CRDT- 2020/08/04 06:00
PHST- 2020/04/24 00:00 [received]
PHST- 2020/06/19 00:00 [accepted]
PHST- 2020/08/04 06:00 [entrez]
PHST- 2020/08/04 06:00 [pubmed]
PHST- 2020/08/04 06:01 [medline]
PHST- 2020/06/26 00:00 [pmc-release]
AID - txaa103 [pii]
AID - 10.1093/tas/txaa103 [doi]
PST - epublish
SO  - Transl Anim Sci. 2020 Jun 26;4(2):974-979. doi: 10.1093/tas/txaa103. eCollection 
      2020 Apr.