Responses in carcass lean pH at 24 hours post-mortem in lines of Large White pigs selected for growth rate on a fixed ration over a set time

Nguyen Hong Nguyen; C P McPhee; G R Trout

doi:10.1016/j.livprodsci.2005.07.005

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Responses in carcass lean pH at 24 hours post-mortem in lines of Large White pigs selected for growth rate on a fixed ration over a set time

Journal article

Peer reviewed

Responses in carcass lean pH at 24 hours post-mortem in lines of Large White pigs selected for growth rate on a fixed ration over a set time

Nguyen Hong Nguyen, C P McPhee and G R Trout

Livestock Science, Vol.100(2-3), pp.84-90

2006

DOI: https://doi.org/10.1016/j.livprodsci.2005.07.005

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Abstract

Animal Production

genetic selection

correlated response

pork quality

population parameters

A restricted maximum likelihood analysis applied to an animal model showed no significant differences (P more than 0.05) in pH value of the longissimus dorsi measured at 24 h post-mortem (pH24) between high and low lines of Large White pigs selected over 4 years for post-weaning growth rate on restricted feeding. Genetic and phenotypic correlations between pH24 and production and carcass traits were estimated using all performance testing records combined with the pH24 measurements (5.05–7.02) on slaughtered animals. The estimate of heritability for pH24 was moderate (0.29 ± 0.18). Genetic correlations between pH24 and production or carcass composition traits, except for ultrasonic backfat (UBF), were not significantly different from zero. UBF had a moderate, positive genetic correlation with pH24 (0.24 ± 0.33). These estimates of genetic correlations affirmed that selection for increased growth rate on restricted feeding is likely to result in limited changes in pH24 and pork quality since the selection does not put a high emphasis on reduced fatness.

Details

Title: Responses in carcass lean pH at 24 hours post-mortem in lines of Large White pigs selected for growth rate on a fixed ration over a set time
Authors: Nguyen Hong Nguyen (Author) - University of Queensland
C P McPhee (Author) - Queensland Department of Primary Industries and Fisheries
G R Trout (Author) - Griffith University
Publication details: Livestock Science, Vol.100(2-3), pp.84-90
Publisher: Elsevier BV
Date published: 2006
DOI: 10.1016/j.livprodsci.2005.07.005
ISSN: 1871-1413
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Centre for Bioinnovation
Language: English
Record Identifier: 99450307302621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Agriculture, Dairy & Animal Science