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Indirect methods for predicting body composition of Boer crossbreds and indigenous goats from the Brazilian semiarid

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Abstract

The aim of this study was to evaluate the correlation and to develop regression equations between the body composition obtained by the comparative slaughter and the neck composition and the ultrasound ribeye area (REAu) in goats from the Brazilian semiarid region. Forty-five intact male goats from three genetic groups were used: 15 Canindé, 15 Moxotó, and 15 F1 Boer x non-descript breed. Animals were randomly assigned to three feeding levels (ad libitum, 25 and 50 % restriction) aimed to result in different slaughter weights and body composition, to fit the regression equations. The REAu was assessed between the 12th and 13th ribs with a 7.5 MHz linear transducer. The values of crude protein, ether extract, and water in the empty body showed high positive correlation (P < 0.01) with REAu and with the same values measured in the neck for all genetic groups. In addition, body composition was well predicted (R 2 > 0.80) from the REAu and from the neck composition.

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Acknowledgments

We thank the CNPq, CAPES, and FACEPE for providing the financial support.

Statement of animal rights

All animal experimental procedures were approved by the Animal Ethics Committee of the Universidade Federal do Vale do São Francisco—UNIVASF.

Conflict of interest

There are no conflicts of interest among the authors of this research.

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Authors and Affiliations

  1. Instituto Federal de Educação Ciência e Tecnologia do Sertão Pernambucano—IF Sertão, Petrolina, Pernambuco, Brazil

    Tiago Santos Silva

  2. Department of Animal Science, Universidade Federal de Viçosa—UFV, Viçosa, Minas Gerais, Brazil

    Mario Luiz Chizzotti

  3. Department of Animal Science, Universidade Federal de Lavras—UFLA, P.O. Box 3037, Lavras, Minas Gerais, 37200-000, Brazil

    Karina Costa Busato & Rafael Torres de Souza Rodrigues

  4. Department of Animal Science, Universidade Federal do Vale do São Francisco—UNIVASF, Petrolina, Pernambuco, Brazil

    Ivonete Ferreira da Silva & Mário Adriano Ávila Queiroz

Authors
  1. Tiago Santos Silva
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  2. Mario Luiz Chizzotti
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  3. Karina Costa Busato
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  4. Rafael Torres de Souza Rodrigues
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  5. Ivonete Ferreira da Silva
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  6. Mário Adriano Ávila Queiroz
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Corresponding author

Correspondence to Rafael Torres de Souza Rodrigues.

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Silva, T.S., Chizzotti, M.L., Busato, K.C. et al. Indirect methods for predicting body composition of Boer crossbreds and indigenous goats from the Brazilian semiarid. Trop Anim Health Prod 47, 1217–1220 (2015). https://doi.org/10.1007/s11250-015-0847-y

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  • DOI: https://doi.org/10.1007/s11250-015-0847-y

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