Estimation methods and correction factors for body weight in Mangalarga Marchador horses
ABSTRACT The objective was to evaluate the accuracy of six body weight (BW) estimating methods in Mangalarga Marchador horses (MM) (n = 318): method A - tape placements at three different positions around the thoracic girth; B - Crevat and Quetelec's formula; C - Hall's formula; D - Hintz and Griffiths’ table; E - Santos’ table; and F - Cintra's formula. For additional analyses, gender, age, and gestational stage were considered. Estimated average BW was compared to the actual scale weight by the paired T test, mean predicted error, and determination coefficient. In the general population, methods A (position 3), B, and C estimated BW that were different from that of the scale. Method A, at positions 1 and 2, was more accurate in predicting the scale weight results compared with all other methods. For pregnant mares, the tape in positions 1 and 2 in method A did not differ from those of the scale. Method A in positions 1 and 2 and the table (method E) may be used to estimate the BW of males and females of different ages and/or gestational stages. To use Methods B and C, correction factors are necessary to precisely estimate the body weights in this breed.
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Sociedade Brasileira de Zootecnia
2017
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oai:scielo:S1516-359820170012009032018-01-10Estimation methods and correction factors for body weight in Mangalarga Marchador horsesSouza,Felipe Amorim Caetano deMuniz,Joel AugustoFernandes,Tales JesusCunha,Fabiana OliveiraMeirelles,Sarah Laguna ConceiçãoSouza,José Camisão deMoura,Raquel Silva de animal production equine foal nutrition pregnancy ABSTRACT The objective was to evaluate the accuracy of six body weight (BW) estimating methods in Mangalarga Marchador horses (MM) (n = 318): method A - tape placements at three different positions around the thoracic girth; B - Crevat and Quetelec's formula; C - Hall's formula; D - Hintz and Griffiths’ table; E - Santos’ table; and F - Cintra's formula. For additional analyses, gender, age, and gestational stage were considered. Estimated average BW was compared to the actual scale weight by the paired T test, mean predicted error, and determination coefficient. In the general population, methods A (position 3), B, and C estimated BW that were different from that of the scale. Method A, at positions 1 and 2, was more accurate in predicting the scale weight results compared with all other methods. For pregnant mares, the tape in positions 1 and 2 in method A did not differ from those of the scale. Method A in positions 1 and 2 and the table (method E) may be used to estimate the BW of males and females of different ages and/or gestational stages. To use Methods B and C, correction factors are necessary to precisely estimate the body weights in this breed.info:eu-repo/semantics/openAccessSociedade Brasileira de ZootecniaRevista Brasileira de Zootecnia v.46 n.12 20172017-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001200903en10.1590/s1806-92902017001200005 |
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Souza,Felipe Amorim Caetano de Muniz,Joel Augusto Fernandes,Tales Jesus Cunha,Fabiana Oliveira Meirelles,Sarah Laguna Conceição Souza,José Camisão de Moura,Raquel Silva de |
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Souza,Felipe Amorim Caetano de Muniz,Joel Augusto Fernandes,Tales Jesus Cunha,Fabiana Oliveira Meirelles,Sarah Laguna Conceição Souza,José Camisão de Moura,Raquel Silva de Estimation methods and correction factors for body weight in Mangalarga Marchador horses |
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Souza,Felipe Amorim Caetano de Muniz,Joel Augusto Fernandes,Tales Jesus Cunha,Fabiana Oliveira Meirelles,Sarah Laguna Conceição Souza,José Camisão de Moura,Raquel Silva de |
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Souza,Felipe Amorim Caetano de |
title |
Estimation methods and correction factors for body weight in Mangalarga Marchador horses |
title_short |
Estimation methods and correction factors for body weight in Mangalarga Marchador horses |
title_full |
Estimation methods and correction factors for body weight in Mangalarga Marchador horses |
title_fullStr |
Estimation methods and correction factors for body weight in Mangalarga Marchador horses |
title_full_unstemmed |
Estimation methods and correction factors for body weight in Mangalarga Marchador horses |
title_sort |
estimation methods and correction factors for body weight in mangalarga marchador horses |
description |
ABSTRACT The objective was to evaluate the accuracy of six body weight (BW) estimating methods in Mangalarga Marchador horses (MM) (n = 318): method A - tape placements at three different positions around the thoracic girth; B - Crevat and Quetelec's formula; C - Hall's formula; D - Hintz and Griffiths’ table; E - Santos’ table; and F - Cintra's formula. For additional analyses, gender, age, and gestational stage were considered. Estimated average BW was compared to the actual scale weight by the paired T test, mean predicted error, and determination coefficient. In the general population, methods A (position 3), B, and C estimated BW that were different from that of the scale. Method A, at positions 1 and 2, was more accurate in predicting the scale weight results compared with all other methods. For pregnant mares, the tape in positions 1 and 2 in method A did not differ from those of the scale. Method A in positions 1 and 2 and the table (method E) may be used to estimate the BW of males and females of different ages and/or gestational stages. To use Methods B and C, correction factors are necessary to precisely estimate the body weights in this breed. |
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Sociedade Brasileira de Zootecnia |
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2017 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001200903 |
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