Relationship between residual feed intake and end product palatability in longissimus steaks from steers sired by Angus bulls divergent for intramuscular fat expected progeny difference

J. K. Ahola, T. A. Skow, C. W. Hunt, R. A. Hill

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10 Citations (Scopus)

Abstract

The relationship between residual feed intake (RFI) and end product quality was evaluated in 133 steers from 5 Angus sires with low, moderate, or high percent intramuscular fat EPD. Steers (320.1±35.76 kg) were evaluated for RFI during a 70- to 84-d growing period and classified into 3 groups based on RFI: efficient (less than -0.5 SD below the mean; n=41), marginal (±0.5 SD from the mean; n=48), and inefficient (>0.5 SD above the mean; n=44). There were no differences among RFI groups for ADG, BW, fat thickness, carcass weight, YG, QG, or palatability traits. Inefficient steers had greater (P0.01) DMI than did marginal and efficient steers, and marginal steers had greater DMI (P0.01) compared with efficient steers. Marbling was greater (P0.01) in inefficient steers than in efficient steers, and inefficient steers had greater (P0.05) marbling compared with marginal steers. However, of all traits evaluated, RFI was only correlated with DMI (r=0.57; P0.0001), feed conversion ratio (r=0.48; P0.0001), marbling (r=0.26; P0.01), and QG (r=0.27; P0.01). Data suggest that feed efficiency in steer progeny of Angus sires divergent for intramuscular fat EPD is not related to carcass characteristics, with the possible exception of marbling score. However, due to the absence of a relationship between RFI and sensory traits, and the potential for a sire effect, it does not appear that end product quality attributes are related to feed efficiency.
Original languageEnglish
Pages (from-to)109-115
Number of pages7
JournalProfessional Animal Scientist
Volume27
Issue number2
Publication statusPublished - 2011

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steaks
intramuscular fat
palatability
Angus
bulls
feed intake
Fats
marbling
sires
Weights and Measures
feed conversion
product quality
fat thickness
carcass weight
carcass characteristics

Cite this

@article{b8b3b27001aa42189ccb691d2a56cfba,
title = "Relationship between residual feed intake and end product palatability in longissimus steaks from steers sired by Angus bulls divergent for intramuscular fat expected progeny difference",
abstract = "The relationship between residual feed intake (RFI) and end product quality was evaluated in 133 steers from 5 Angus sires with low, moderate, or high percent intramuscular fat EPD. Steers (320.1{\^A}±35.76 kg) were evaluated for RFI during a 70- to 84-d growing period and classified into 3 groups based on RFI: efficient (less than -0.5 SD below the mean; n=41), marginal ({\^A}±0.5 SD from the mean; n=48), and inefficient (>0.5 SD above the mean; n=44). There were no differences among RFI groups for ADG, BW, fat thickness, carcass weight, YG, QG, or palatability traits. Inefficient steers had greater (P0.01) DMI than did marginal and efficient steers, and marginal steers had greater DMI (P0.01) compared with efficient steers. Marbling was greater (P0.01) in inefficient steers than in efficient steers, and inefficient steers had greater (P0.05) marbling compared with marginal steers. However, of all traits evaluated, RFI was only correlated with DMI (r=0.57; P0.0001), feed conversion ratio (r=0.48; P0.0001), marbling (r=0.26; P0.01), and QG (r=0.27; P0.01). Data suggest that feed efficiency in steer progeny of Angus sires divergent for intramuscular fat EPD is not related to carcass characteristics, with the possible exception of marbling score. However, due to the absence of a relationship between RFI and sensory traits, and the potential for a sire effect, it does not appear that end product quality attributes are related to feed efficiency.",
keywords = "Aberdeen-Angus beef beef bulls beef cattle beef cows body weight bulls carcass composition carcass quality carcasses cattle feeding cows dry matter feed conversion efficiency feed intake meat quality muscles palatability steaks steers cattle bullocks Bos Bovidae ruminants Artiodactyla mammals vertebrates Chordata animals ungulates eukaryotes",
author = "Ahola, {J. K.} and Skow, {T. A.} and Hunt, {C. W.} and Hill, {R. A.}",
note = "Author Affiliation: Department of Animal and Veterinary Science, University of Idaho, Moscow, ID 83844, USA. Author Email: jason.ahola@colostate.edu",
year = "2011",
language = "English",
volume = "27",
pages = "109--115",
journal = "Professional Animal Scientist",
issn = "1080-7446",
publisher = "Elsevier",
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T1 - Relationship between residual feed intake and end product palatability in longissimus steaks from steers sired by Angus bulls divergent for intramuscular fat expected progeny difference

AU - Ahola, J. K.

AU - Skow, T. A.

AU - Hunt, C. W.

AU - Hill, R. A.

N1 - Author Affiliation: Department of Animal and Veterinary Science, University of Idaho, Moscow, ID 83844, USA. Author Email: jason.ahola@colostate.edu

PY - 2011

Y1 - 2011

N2 - The relationship between residual feed intake (RFI) and end product quality was evaluated in 133 steers from 5 Angus sires with low, moderate, or high percent intramuscular fat EPD. Steers (320.1±35.76 kg) were evaluated for RFI during a 70- to 84-d growing period and classified into 3 groups based on RFI: efficient (less than -0.5 SD below the mean; n=41), marginal (±0.5 SD from the mean; n=48), and inefficient (>0.5 SD above the mean; n=44). There were no differences among RFI groups for ADG, BW, fat thickness, carcass weight, YG, QG, or palatability traits. Inefficient steers had greater (P0.01) DMI than did marginal and efficient steers, and marginal steers had greater DMI (P0.01) compared with efficient steers. Marbling was greater (P0.01) in inefficient steers than in efficient steers, and inefficient steers had greater (P0.05) marbling compared with marginal steers. However, of all traits evaluated, RFI was only correlated with DMI (r=0.57; P0.0001), feed conversion ratio (r=0.48; P0.0001), marbling (r=0.26; P0.01), and QG (r=0.27; P0.01). Data suggest that feed efficiency in steer progeny of Angus sires divergent for intramuscular fat EPD is not related to carcass characteristics, with the possible exception of marbling score. However, due to the absence of a relationship between RFI and sensory traits, and the potential for a sire effect, it does not appear that end product quality attributes are related to feed efficiency.

AB - The relationship between residual feed intake (RFI) and end product quality was evaluated in 133 steers from 5 Angus sires with low, moderate, or high percent intramuscular fat EPD. Steers (320.1±35.76 kg) were evaluated for RFI during a 70- to 84-d growing period and classified into 3 groups based on RFI: efficient (less than -0.5 SD below the mean; n=41), marginal (±0.5 SD from the mean; n=48), and inefficient (>0.5 SD above the mean; n=44). There were no differences among RFI groups for ADG, BW, fat thickness, carcass weight, YG, QG, or palatability traits. Inefficient steers had greater (P0.01) DMI than did marginal and efficient steers, and marginal steers had greater DMI (P0.01) compared with efficient steers. Marbling was greater (P0.01) in inefficient steers than in efficient steers, and inefficient steers had greater (P0.05) marbling compared with marginal steers. However, of all traits evaluated, RFI was only correlated with DMI (r=0.57; P0.0001), feed conversion ratio (r=0.48; P0.0001), marbling (r=0.26; P0.01), and QG (r=0.27; P0.01). Data suggest that feed efficiency in steer progeny of Angus sires divergent for intramuscular fat EPD is not related to carcass characteristics, with the possible exception of marbling score. However, due to the absence of a relationship between RFI and sensory traits, and the potential for a sire effect, it does not appear that end product quality attributes are related to feed efficiency.

KW - Aberdeen-Angus beef beef bulls beef cattle beef cows body weight bulls carcass composition carcass quality carcasses cattle feeding cows dry matter feed conversion efficiency feed intake meat quality muscles palatability steaks steers cattle bullocks Bos

M3 - Article

VL - 27

SP - 109

EP - 115

JO - Professional Animal Scientist

JF - Professional Animal Scientist

SN - 1080-7446

IS - 2

ER -