Estimation of body weight by an indirect measurement method in developing replacement Holstein heifers raised on pasture

Scale is the most accurate means of measuring the actual body weight (BW) in developing heifers. However, when it is not available, indirect tools to estimate BW are needed. The objective of this study was to evaluate the distance between the left and right coxal tuberosity (DLRCT) as potential esti...

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Autores principales:	Bretschneider,G, Cuatrin,A, Arias,D, Vottero,D
Lenguaje:	English
Publicado:	Facultad de Ciencias Veterinarias, Universidad Austral de Chile 2014
Materias:	dairy heifers body weight growth Holstein
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2014000300014
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spelling	oai:scielo:S0301-732X20140003000142015-01-14Estimation of body weight by an indirect measurement method in developing replacement Holstein heifers raised on pastureBretschneider,GCuatrin,AArias,DVottero,D dairy heifers body weight growth Holstein Scale is the most accurate means of measuring the actual body weight (BW) in developing heifers. However, when it is not available, indirect tools to estimate BW are needed. The objective of this study was to evaluate the distance between the left and right coxal tuberosity (DLRCT) as potential estimator of shrunk BW (SBW) of developing Holstein heifers as compared with the actual weight measured by an electronic scale. The study included pre-breeding Argentinean Holstein females from 3 to 21 months of age. A dataset comprising 496 observations was used to quantify the relationship between the DLRCT (cm) and the SBW (kg) by the least squared method. The power function Y = 0.131X2.0758, where X = DLRCT provided the best fit (P < 0.0001) for predicting SBW. A dataset comprising 194 observations was used to assess the strength of agreement of the power function. The Lin correlation coefficient value was 0.97 and the computed 95% CI was 0.965-0.979. The mean difference between observed and estimated SBW was -0.99 kg. There was no significant difference (t = -0.83; P = 0.41) in the mean SBW between observed and estimated data. As a predictor of SBW, particularly in heifers ≥ 5 months of age and ≤ 350 kg BW (i.e. ≤ 45 cm), the DLRCT demonstrated to be a useful alternative that can be easily applied during any practice usually performed on replacement heifers, without requiring a squeeze chute.info:eu-repo/semantics/openAccessFacultad de Ciencias Veterinarias, Universidad Austral de ChileArchivos de medicina veterinaria v.46 n.3 20142014-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2014000300014en10.4067/S0301-732X2014000300014
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	dairy heifers body weight growth Holstein
spellingShingle	dairy heifers body weight growth Holstein Bretschneider,G Cuatrin,A Arias,D Vottero,D Estimation of body weight by an indirect measurement method in developing replacement Holstein heifers raised on pasture
description	Scale is the most accurate means of measuring the actual body weight (BW) in developing heifers. However, when it is not available, indirect tools to estimate BW are needed. The objective of this study was to evaluate the distance between the left and right coxal tuberosity (DLRCT) as potential estimator of shrunk BW (SBW) of developing Holstein heifers as compared with the actual weight measured by an electronic scale. The study included pre-breeding Argentinean Holstein females from 3 to 21 months of age. A dataset comprising 496 observations was used to quantify the relationship between the DLRCT (cm) and the SBW (kg) by the least squared method. The power function Y = 0.131X2.0758, where X = DLRCT provided the best fit (P < 0.0001) for predicting SBW. A dataset comprising 194 observations was used to assess the strength of agreement of the power function. The Lin correlation coefficient value was 0.97 and the computed 95% CI was 0.965-0.979. The mean difference between observed and estimated SBW was -0.99 kg. There was no significant difference (t = -0.83; P = 0.41) in the mean SBW between observed and estimated data. As a predictor of SBW, particularly in heifers ≥ 5 months of age and ≤ 350 kg BW (i.e. ≤ 45 cm), the DLRCT demonstrated to be a useful alternative that can be easily applied during any practice usually performed on replacement heifers, without requiring a squeeze chute.
author	Bretschneider,G Cuatrin,A Arias,D Vottero,D
author_facet	Bretschneider,G Cuatrin,A Arias,D Vottero,D
author_sort	Bretschneider,G
title	Estimation of body weight by an indirect measurement method in developing replacement Holstein heifers raised on pasture
title_short	Estimation of body weight by an indirect measurement method in developing replacement Holstein heifers raised on pasture
title_full	Estimation of body weight by an indirect measurement method in developing replacement Holstein heifers raised on pasture
title_fullStr	Estimation of body weight by an indirect measurement method in developing replacement Holstein heifers raised on pasture
title_full_unstemmed	Estimation of body weight by an indirect measurement method in developing replacement Holstein heifers raised on pasture
title_sort	estimation of body weight by an indirect measurement method in developing replacement holstein heifers raised on pasture
publisher	Facultad de Ciencias Veterinarias, Universidad Austral de Chile
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0301-732X2014000300014
work_keys_str_mv	AT bretschneiderg estimationofbodyweightbyanindirectmeasurementmethodindevelopingreplacementholsteinheifersraisedonpasture AT cuatrina estimationofbodyweightbyanindirectmeasurementmethodindevelopingreplacementholsteinheifersraisedonpasture AT ariasd estimationofbodyweightbyanindirectmeasurementmethodindevelopingreplacementholsteinheifersraisedonpasture AT votterod estimationofbodyweightbyanindirectmeasurementmethodindevelopingreplacementholsteinheifersraisedonpasture
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Estimation of body weight by an indirect measurement method in developing replacement Holstein heifers raised on pasture

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