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Prediction of retail beef yield, trim fat and proportion of high-valued cuts in Nellore cattle using ultrasound live measurements

Saulo da Luz e Silva et al · Sociedade Brasileira de Zootecnia · 2012

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Author / responsible party
Saulo da Luz e Silva et al
Publisher
Sociedade Brasileira de Zootecnia
Year
2012
ISSN
1516-3598
ISSN
1516-3598
Language
English
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Acasalamento dirigido para aumentar a produção de animais geneticamente superiores e reduzir a variabilidade da progênie em bovinos Mating strategy for increasing the probability of producing outstanding animals and reducing progeny variability

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The objective of this study was to develop equations to predict retail product and fat trim (weights and percentages) for Nellore (Bos indicus) cattle. Live ultrasound measurements of the longissimus muscle area, backfat thickness at the 12th rib and rump fat depth and shrunk body weight were obtained from 218 Nellore steers to predict weights and percentages of carcass retail product, pistola retail product and fat trimmings. After slaughter, carcasses were deboned and weighed and percentages of retail cuts were obtained directly. Measurements taken directly in the carcasses explained 97% and 36% of variation in carcass retail product weight and percentage, and 94% and 36% of variation in pistola retail weight and percentage, respectively. Live measurements explained 93% of carcass retail product weight and 39% of carcass retail product percentage. Lower accuracies were observed for pistola retail product weight (R²=0.87) and percentage (R²=0.33). Accuracies for fat trimmings weight and percentage were 79% and 55%, respectively. Ultrasound rump fat thickness showed greater correlations with retail product and fat trimmings (weights and percentages) when compared with ultrasound backfat thickness. The weight and percentage of retail products and of trimmable fat can be estimated in Nellore steers from live animal measurements, with similar accuracy to equations developed based on carcass measurements obtained at slaughter.

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APA 7

al, S. D. L. E. S. E. (2012). Prediction of retail beef yield, trim fat and proportion of high-valued cuts in Nellore cattle using ultrasound live measurements. https://doi.org/10.1590/S1516-35982012000900009

MLA

al, Saulo da Luz e Silva et. "Prediction of retail beef yield, trim fat and proportion of high-valued cuts in Nellore cattle using ultrasound live measurements." 2012. https://doi.org/10.1590/S1516-35982012000900009.

Chicago

al, Saulo da Luz e Silva et. 2012. "Prediction of retail beef yield, trim fat and proportion of high-valued cuts in Nellore cattle using ultrasound live measurements.". https://doi.org/10.1590/S1516-35982012000900009.

Harvard

al, S. D. L. E. S. E. 2012, Prediction of retail beef yield, trim fat and proportion of high-valued cuts in Nellore cattle using ultrasound live measurements, Sociedade Brasileira de Zootecnia, available at: https://doi.org/10.1590/S1516-35982012000900009 [Accessed 9 Aug. 2026].

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Title
Prediction of retail beef yield, trim fat and proportion of high-valued cuts in Nellore cattle using ultrasound live measurements
Author / contributors
Saulo da Luz e Silva et al
Publisher
Sociedade Brasileira de Zootecnia
Publication year
2012
ISSN
1516-3598
ISSN
1516-3598
Language
English

Subjects

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beef; Bos indicus; fat; retail product; ultrasound
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