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.

Bibliographic Details

Main Authors:	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
Format:	Digital revista
Language:	English
Published:	Sociedade Brasileira de Zootecnia 2017
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017001200903
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