title: A comparison of technical replicate (cuts) effect on lamb Warner-Bratzler shear force measurement precision.
abstract: The Warner-Bratzler shear force (WBSF) of 335 lamb m. longissimus lumborum (LL) caudal and cranial ends was measured to examine and simulate the effect of replicate number (r: 1-8) on the precision of mean WBSF estimates and to compare LL caudal and cranial end WBSF means. All LL were sourced from two experimental flocks as part of the Information Nucleus slaughter programme (CRC for Sheep Industry Innovation) and analysed using a Lloyd Texture analyser with a Warner-Bratzler blade attachment. WBSF data were natural logarithm (ln) transformed before statistical analysis. Mean ln(WBSF) precision improved as r increased; however the practical implications support an r equal to 6, as precision improves only marginally with additional replicates. Increasing LL sample replication results in better ln(WBSF) precision compared with increasing r, provided that sample replicates are removed from the same LL end. Cranial end mean WBSF was 11.2 ± 1.3% higher than the caudal end.
authors.affiliation: NSW Department of Primary Industries, Centre for Red Meat and Sheep Development, Cowra, NSW 2794, Australia.
authors.forename: B W B
authors.initials: BW
authors.lastname: Holman
authors.affiliation: Federal University of Lavras, Department of Animal Science, Lavras 37200-000, Minas Gerais, Brazil.
authors.forename: T I R C
authors.initials: TI
authors.lastname: Alvarenga
authors.affiliation: NSW Department of Primary Industries, Orange Agricultural Institute, Forest Road, Orange NSW 2800, Australia.
authors.forename: R J
authors.initials: RJ
authors.lastname: van de Ven
authors.affiliation: NSW Department of Primary Industries, Centre for Red Meat and Sheep Development, Cowra, NSW 2794, Australia; Sheep CRC, for Sheep Industry Innovation, Homestead, University of New England, Armidale, NSW 2351, Australia.
authors.forename: D L
authors.initials: DL
authors.lastname: Hopkins
mesh_terms: D000818:Animals; D017849:Animals, Inbred Strains; D021461:Animals, Outbred Strains; D055598:Chemical Phenomena; D003296:Cooking; D003433:Crosses, Genetic; D005628:Frozen Foods / Q000032:analysis; D006358:Hot Temperature / Q000009:adverse effects; D008460:Meat / Q000032:analysis*; D008462:Meat-Packing Industry / Q000379:methods*; D055595:Mechanical Phenomena; D024510:Muscle Development; D009517:New South Wales; D011786:Quality Control; D015203:Reproducibility of Results; D033081:Shear Strength; D034561:Sheep, Domestic / Q000254:growth & development*; D013499:Surface Properties
keywords: Laboratory replication; Lamb; Lloyd texture analyser; Shear force