1998
DOI: 10.2527/1998.76102542x
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Genetic parameter estimates for carcass and yearling ultrasound measurements in Brangus cattle.

Abstract: Carcass measurements of 12th-rib fat thickness (CARCFAT), longissimus muscle area (CARCLMA), and weight (CARCWT) on 2,028 Brangus and Brangus-sired fed steers and heifers, as well as yearling weights (YWT) and ultrasound measures of 12th-rib fat thickness (USFAT) and longissimus muscle area (USLMA) on 3,583 Brangus bulls and heifers were analyzed to estimate genetic parameters. Data were analyzed using a six-trait animal model and an average information REML algorithm. The model included fixed effects for cont… Show more

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Cited by 76 publications
(87 citation statements)
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“…For TEMP, the scan traits were both phenotypically and genetically positively correlated with LWT. Arnold et al (1991), Robinson et al (1993), and Moser et al (1998) have reported similar results. No genetic estimates for scanned fatness traits were obtained for TROP due to failed convergence because little phenotypic variation existed for these traits at POSTW (e.g.…”
Section: Post-weaningsupporting
confidence: 71%
See 1 more Smart Citation
“…For TEMP, the scan traits were both phenotypically and genetically positively correlated with LWT. Arnold et al (1991), Robinson et al (1993), and Moser et al (1998) have reported similar results. No genetic estimates for scanned fatness traits were obtained for TROP due to failed convergence because little phenotypic variation existed for these traits at POSTW (e.g.…”
Section: Post-weaningsupporting
confidence: 71%
“…Johnson et al (1993) reported a -0.53 genetic correlation between yearling ultrasound fatness and weight in tropically adapted Brangus cattle. In contrast, Moser et al (1998), also working with Brangus, estimated a positive 0.11 genetic correlation between scan rib fat and yearling weight. The discrepancy in the correlation estimates between the studies may be due to the very low additive variances of the fatness traits as a result of the leanest of the cattle (<5 mm) at the time of scanning.…”
Section: Start Of Finishingmentioning
confidence: 99%
“…Além disso, pelo fato de a AOL ter correlação alta com o peso (Moser et al, 1998;Stelzleni et al, 2002), esperava-se que os machos apresentassem maior AOL. Yokoo et al (2007) também observaram maior AOL em machos do que em fêmeas para a raça Nelore.…”
Section: Methodsunclassified
“…However, genetic evaluation for these attributes in breeding animals is generally difficult and expensive. Use of real-time ultrasound scanning for eye muscle area and fat thickness as a predictor of saleable beef yield is an effective tool for genetic evaluation of carcass quantity in young animals (Perkins et al 1992;Robinson et al 1993;Bergen et al 1996;Moser et al 1998). Ultrasonography is also potentially useful for genetic evaluation of intramuscular fat (marbling) in young animals, particularly in heifers or steer half-sibs (Wilson et al 1998).…”
Section: Genetic Markers For Carcass and Beef Quality Attributesmentioning
confidence: 99%