2008
DOI: 10.1111/j.1439-0388.2007.00711.x
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Genetic parameters for carcass and meat quality traits and their relationships to liveweight and wool production in hogget Merino rams

Abstract: Genetic parameters for carcass and meat quality traits of about 18-month-old Merino rams (n = 5870), the progeny of 543 sires from three research resource flocks, were estimated. The estimates of heritability for hot carcass weight (HCW) and the various fat and muscle dimension measurements were moderate and ranged from 0.20 to 0.37. The brightness of meat (colour L*, 0.18 +/- 0.03 standard error) and meat pH (0.22 +/- 0.03) also had moderate estimates of heritability, although meat relative redness (colour a*… Show more

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Cited by 50 publications
(69 citation statements)
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“…lamb survival 0.03 to 0.33 (Sawalha et al, 2007;Afolayan et al, 2008) and litter size, 0.19 (Afolayan et al, 2008)) seem to be generally lower than those for performance traits (e.g. average daily gain 0.14 to 0.30 (Maxa et al, 2007), carcass fat 0.20 to 0.37 (Greeff et al, 2008) and wool 0.25 to 0.32 (Borg et al, 2009)). Heritabilities for lamb vigour behaviours (e.g.…”
Section: Introductionmentioning
confidence: 82%
“…lamb survival 0.03 to 0.33 (Sawalha et al, 2007;Afolayan et al, 2008) and litter size, 0.19 (Afolayan et al, 2008)) seem to be generally lower than those for performance traits (e.g. average daily gain 0.14 to 0.30 (Maxa et al, 2007), carcass fat 0.20 to 0.37 (Greeff et al, 2008) and wool 0.25 to 0.32 (Borg et al, 2009)). Heritabilities for lamb vigour behaviours (e.g.…”
Section: Introductionmentioning
confidence: 82%
“…The other major study of Merinos from research flocks found low negative genetic correlations for yCFW with yFAT (−0.17 ± 0.07) and yEMD adjusted for weight (−0.13 ± 0.07) and moderate positive correlations with yCUR (0.43 ± 0.12 and 0.44 ± 0.15, respectively), whereas the genetic correlations with all the other wool traits were negligible (Greeff et al, 2008). Li et al (2008) reported increased ultrasound FAT and EMD at the C site in young Merino wethers (18 mo of age) with high EBV for wool growth (and similar EBV for FD and live weight), together with increased whole body protein turnover and energy retention in wool and wool-free body tissue compared with low wool growth EBV wethers.…”
Section: Genetic Correlationsmentioning
confidence: 99%
“…Other traits associated with product quality (e.g., wool staple strength, carcass fat) and disease (e.g., worm resistance, fly strike) may also be important contributors to profit. There is considerable genetic variation for the major wool and meat traits (Safari et al, 2005(Safari et al, , 2007aGreeff et al, 2008;. However, the development of effective breeding programs that combine these disparate objectives also requires accurate estimates of the genetic relationships between the various traits.…”
Section: Introductionmentioning
confidence: 99%
“…This trend is expected to continue into the foreseeable future (Martin and Phillips, 2011). About 80% of Australia's national flock remains predominantly Merinobased, a wool specialist breed, regardless of the current relatively lower economic value of wool (Greeff et al, 2008;Hatcher et al, 2010;Swan, 2010;Warner et al, 2007). Hence, to capitalise on the present high demand for prime lamb, farmers are using selective crossbreeding strategies wherein meat-type terminal sires are joined with purebred Merino ewes (Ingham et al, 2007;Kopke et al, 2008).…”
Section: Introductionmentioning
confidence: 99%