Effects of low protein diets on pigs with a lean genotype 2. Compositional traits measured with computed tomography (CT)

NR Lambe, JD Wood, KA McLean, GA Walling, S Jagger, P Fullarton, J Bayntun, L Bunger

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The effects on compositional changes across the growing-finishing period (40–115 kg) of feeding pig diets with different protein and amino acid levels were investigated using CT scanning (at 60, 85 and 115 kg live weight). Pigs of a lean commercial genotype were fed a commercial control regime (C), or a low protein regime with either high (LP1) or low (LP2) essential amino acid levels, all balanced for net energy. In vivo CT measurements agreed well with post-slaughter sample joint dissection results for carcass tissue weights/proportions, and CT-measuredmuscle density predicted intramuscular fat accurately. Pigs on C and LP1 regimes did not differ significantly in composition during growth. However, pigs on the LP2 regime had significantly more fat (in carcass, internal and intra-muscular depots) and lessmuscle, from85 kg onwards. Although fat levels differed depending on diet regime (LP2 > others), proportions of fat in different body depots were unaffected. © 2013 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)129 - 136
Number of pages8
JournalMeat Science
Volume95
DOIs
Publication statusPrint publication - Sep 2013

Fingerprint

Protein-Restricted Diet
low protein diet
computed tomography
Swine
Fats
Genotype
Tomography
swine
genotype
lipids
swine feeding
intramuscular fat
tissue weight
Diet
essential amino acids
Weights and Measures
dietary protein
Essential Amino Acids
finishing
slaughter

Bibliographical note

1025128

Keywords

  • CT scanning
  • Carcass composition
  • Diet
  • Fat
  • Pig

Cite this

Lambe, NR ; Wood, JD ; McLean, KA ; Walling, GA ; Jagger, S ; Fullarton, P ; Bayntun, J ; Bunger, L. / Effects of low protein diets on pigs with a lean genotype 2. Compositional traits measured with computed tomography (CT). In: Meat Science. 2013 ; Vol. 95. pp. 129 - 136.
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Effects of low protein diets on pigs with a lean genotype 2. Compositional traits measured with computed tomography (CT). / Lambe, NR; Wood, JD; McLean, KA; Walling, GA; Jagger, S; Fullarton, P; Bayntun, J; Bunger, L.

In: Meat Science, Vol. 95, 09.2013, p. 129 - 136.

Research output: Contribution to journalArticle

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AU - Lambe, NR

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