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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
07/12/2020 |
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Data da última atualização: |
07/12/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CARDOSO, L. L.; TAROUCO, J. U.; MACNEIL, M. D.; LOBATO, J. F. P.; DAMBRÓS, M. C.; FREITAS, A. K. de; DEVICENZI, T.; FEIJÓ, F. D.; CARDOSO, F. F. |
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Afiliação: |
Leandro Lunardini Cardoso, UFRGS; Jaime Urdapilleta Tarouco, UFRGS; Michael D. MacNeil, DELTA G; José Fernando Piva Lobato, UFRGS; Mara Célia Dambrós, USP; Aline Kellermann de Freitas, UFRGS; Thais Devincenzi, UFRGS; Fernanda Dorneles Feijó, UFRGS; FERNANDO FLORES CARDOSO, CPPSUL. |
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Título: |
Sample size and prediction of weight and yield of individual cuts from Braford steers pistol hindquarters. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Scientia Agricola, v. 77, n. 4, e20180224, 2020. |
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ISSN: |
1678-992X |
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DOI: |
http://dx.doi.org/10.1590/1678-992X-2018-0224 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT: Two hundred seventeen grass-finished Braford steers were assessed by ultrasonic scanning and subsequently harvested with their pistol hindquarters fabricated into boneless wholesale cuts. The Longissimus thoracis muscle area and subcutaneous fat depths were measured. The objectives of this study were: 1) to develop prediction equations for weights of the pistol hindquarter and high-value commercial cuts, and 2) to estimate sample size needed for experiments comparing pistol hindquarter retail product weight using either physically or ultrasonically measured carcass traits. Carcass measurements explained 44 % to 94 % of the variation in weights of individual cuts, whereas, measurements that were made using ultrasound explained 42 % to 90 % of the variation in the weights. Models used to predict the weight of pistol hindquarter retail product with carcass measures and ultrasound measures showed high coefficient of determination (R2 = 0.92 and 0.97, respectively). Whether based on carcass or ultrasound measures, models used to estimate weight percentage of fat trimmed from the pistol hindquarter had lack of fit. In general, models for individual cuts weights that used traits measured with ultrasound as independent variables approached the accuracy of models using carcass traits. Thus, only slightly greater samples sizes were required to have equivalent power to detect differences in retail product weights using ultrasound measures. For experiments of equivalent power, differences in the number of animals required may be offset by avoiding costs for slaughter and fabrication. Keywords: cattle, carcass, models, ultrasound MenosABSTRACT: Two hundred seventeen grass-finished Braford steers were assessed by ultrasonic scanning and subsequently harvested with their pistol hindquarters fabricated into boneless wholesale cuts. The Longissimus thoracis muscle area and subcutaneous fat depths were measured. The objectives of this study were: 1) to develop prediction equations for weights of the pistol hindquarter and high-value commercial cuts, and 2) to estimate sample size needed for experiments comparing pistol hindquarter retail product weight using either physically or ultrasonically measured carcass traits. Carcass measurements explained 44 % to 94 % of the variation in weights of individual cuts, whereas, measurements that were made using ultrasound explained 42 % to 90 % of the variation in the weights. Models used to predict the weight of pistol hindquarter retail product with carcass measures and ultrasound measures showed high coefficient of determination (R2 = 0.92 and 0.97, respectively). Whether based on carcass or ultrasound measures, models used to estimate weight percentage of fat trimmed from the pistol hindquarter had lack of fit. In general, models for individual cuts weights that used traits measured with ultrasound as independent variables approached the accuracy of models using carcass traits. Thus, only slightly greater samples sizes were required to have equivalent power to detect differences in retail product weights using ultrasound measures. For experiments of equivalent power,... Mostrar Tudo |
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Thesagro: |
Bovino; Carcaça; Ultrassom. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/218803/1/Cardoso-et-al-2020.pdf
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Marc: |
LEADER 02475naa a2200277 a 4500
001 2127710
005 2020-12-07
008 2020 bl uuuu u00u1 u #d
022 $a1678-992X
024 7 $ahttp://dx.doi.org/10.1590/1678-992X-2018-0224$2DOI
100 1 $aCARDOSO, L. L.
245 $aSample size and prediction of weight and yield of individual cuts from Braford steers pistol hindquarters.$h[electronic resource]
260 $c2020
520 $aABSTRACT: Two hundred seventeen grass-finished Braford steers were assessed by ultrasonic scanning and subsequently harvested with their pistol hindquarters fabricated into boneless wholesale cuts. The Longissimus thoracis muscle area and subcutaneous fat depths were measured. The objectives of this study were: 1) to develop prediction equations for weights of the pistol hindquarter and high-value commercial cuts, and 2) to estimate sample size needed for experiments comparing pistol hindquarter retail product weight using either physically or ultrasonically measured carcass traits. Carcass measurements explained 44 % to 94 % of the variation in weights of individual cuts, whereas, measurements that were made using ultrasound explained 42 % to 90 % of the variation in the weights. Models used to predict the weight of pistol hindquarter retail product with carcass measures and ultrasound measures showed high coefficient of determination (R2 = 0.92 and 0.97, respectively). Whether based on carcass or ultrasound measures, models used to estimate weight percentage of fat trimmed from the pistol hindquarter had lack of fit. In general, models for individual cuts weights that used traits measured with ultrasound as independent variables approached the accuracy of models using carcass traits. Thus, only slightly greater samples sizes were required to have equivalent power to detect differences in retail product weights using ultrasound measures. For experiments of equivalent power, differences in the number of animals required may be offset by avoiding costs for slaughter and fabrication. Keywords: cattle, carcass, models, ultrasound
650 $aBovino
650 $aCarcaça
650 $aUltrassom
700 1 $aTAROUCO, J. U.
700 1 $aMACNEIL, M. D.
700 1 $aLOBATO, J. F. P.
700 1 $aDAMBRÓS, M. C.
700 1 $aFREITAS, A. K. de
700 1 $aDEVICENZI, T.
700 1 $aFEIJÓ, F. D.
700 1 $aCARDOSO, F. F.
773 $tScientia Agricola$gv. 77, n. 4, e20180224, 2020.
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Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Uva e Vinho. |
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Data corrente: |
30/11/2009 |
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Data da última atualização: |
24/10/2019 |
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Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
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Autoria: |
CAMARGO, U. A.; MAIA, J. D. G.; MACHADO, C. A. E.; RITSCHEL, P. S. |
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Afiliação: |
UMBERTO ALMEIDA CAMARGO, CNPUV; JOAO DIMAS GARCIA MAIA, CNPUV; CARLOS ALBERTO ELY MACHADO, CNPUV; PATRICIA SILVA RITSCHEL, CNPUV. |
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Título: |
Reação de acessos mantidos no banco de germoplasma de uva às principais doenças da videira no Brasil. |
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Ano de publicação: |
2009 |
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Fonte/Imprenta: |
In: SIMPOSIO DE RECURSOS GENÉTICOS PARA AMÉRICA LATINA Y EL CARIBE, SIRGEALC, 7, 2009, Pucón, Chile. Proceeding... Santiago de Chile: Ministério de Agricultura, Instituto de Investigaciones Agropecuarias, 2009. |
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Páginas: |
p. 246-247. |
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Idioma: |
Português |
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Conteúdo: |
As doenças fúngicas mais importantes para a viticultura brasileira são o míldio (Plasmopora vitícola), o oídio (Uncinula necator) e a podridão cinza do cacho (Botrytis cinerea). Em algumas regiões, os tratamentos fitossanitários chegam a cerca de 30% do custo de produção. |
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Palavras-Chave: |
Melhoramento genético. |
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Thesagro: |
Doença de planta; Fungo; Germoplasma; Resistência; Uva; Viticultura. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/203601/1/11818-2009-p.246-247.pdf
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Marc: |
LEADER 01153nam a2200241 a 4500
001 1576674
005 2019-10-24
008 2009 bl uuuu u00u1 u #d
100 1 $aCAMARGO, U. A.
245 $aReação de acessos mantidos no banco de germoplasma de uva às principais doenças da videira no Brasil.$h[electronic resource]
260 $aIn: SIMPOSIO DE RECURSOS GENÉTICOS PARA AMÉRICA LATINA Y EL CARIBE, SIRGEALC, 7, 2009, Pucón, Chile. Proceeding... Santiago de Chile: Ministério de Agricultura, Instituto de Investigaciones Agropecuarias$c2009
300 $ap. 246-247.
520 $aAs doenças fúngicas mais importantes para a viticultura brasileira são o míldio (Plasmopora vitícola), o oídio (Uncinula necator) e a podridão cinza do cacho (Botrytis cinerea). Em algumas regiões, os tratamentos fitossanitários chegam a cerca de 30% do custo de produção.
650 $aDoença de planta
650 $aFungo
650 $aGermoplasma
650 $aResistência
650 $aUva
650 $aViticultura
653 $aMelhoramento genético
700 1 $aMAIA, J. D. G.
700 1 $aMACHADO, C. A. E.
700 1 $aRITSCHEL, P. S.
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Embrapa Uva e Vinho (CNPUV) |
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