Accuracy and reliability of two body weight estimators based on linear measurements in horses

Autores

DOI:

https://doi.org/10.17523/bia.2021.v78.e1498

Palavras-chave:

economic evaluation, zootechnical control, management, linear measures, body weight

Resumo

Estimation methods are routinely used to determine the body weight of a horse when a scale is not available. However, it is important to evaluate the accuracy and reliability of these predictions since nutritional management and drug dosage, among others, require knowledge of the animal€™s weight. The objective of this study was to evaluate the accuracy and reliability of estimated weights of horses using two prediction models, and to discuss the effect of the predictions on animal management. Seventy-one adult male animals (40 mules and 31 horses) were weighed on a precision scale (control weight). Chest circumference and body length were measured and used to estimate body weight using the two models. Accuracy was evaluated by analysis of fit indices, comparison of squared prediction errors, delta Akaike€™s information criterion, and decomposition of the mean squared error of prediction. For economic evaluation, three production scenarios were established: simple (worming + forage), traditional (worming + forage + concentrate mixture), and traditional with supplementation (worming + forage + concentrate mixture + supplementation). Economic values were collected through a pricing survey carried out in the Midwest region of Brazil and converted to US dollars. Percent differences in costs were evaluated using Fisher€™s exact test. The most suitable model for the morphometric profile of the animals was that using a combination of chest circumference and body length. The differences in economic values between production scenarios were significant (P<0.05). Losses using the inadequate model are 10% higher compared to control; thus, in a facility with 20 equids that uses this model, the losses are ‰ˆ US$ 10,000/year. When investment in a scale is not possible, it is fundamental to evaluate which model is more compatible with the body biotype of the herd since all types of management that depend on the body weight of the animals may result in significant economic losses.

Downloads

Os dados de download ainda não estão disponíveis.

Referências

ANJOS, A.N.A.; LEME, D.P. Feeding management practices in stabled horses of Santa Catarina, Brazil. Revista Acadêmica Ciência Agrária e Ambiental, v.12, p. 113-120, 2014. https://www.cabdirect.org/cabdirect/abstract/20153070585

BIBBY, J.; TOUTENBURG, H. Prediction and improved estimation in linear models. London: John Wiley, 1977. 188p.

BURNHAM, K.P.; ANDERSON, D.R. Model selection and multimodel inference. A practical information - theoretic approach. New York: Springer, 2002.

BYCZKOWSKA, B.; PILARCZYK, B.; MARCINIAK, A.T. Evaluation of the effectiveness of programs combating the invasions of strongyles (Strongylidae) in horses in selected stables of Western Pomerania. Annals of Parasitology, v.65, p.121-128, 2019.

CARROLL, C.L.; HUNTINGTON, P.J. Body condition scoring and weight estimation of horses. Equine Veterinary Journal, v.20, p. 21-45, 1988. https://doi.org/10.1111/j.2042-3306.1988.tb01451.x

CINTRA, A.G.C. O cavalo: características, manejo e alimentação. São Paulo: Roca, 2011. 384p.

ENSMINGER, M.E. Horses and horsemanship. 5 Ed. Danville, IL: The InterstatePrinters, 1977. p. 509.

FAO - Food and Agriculture Organization of the United Nations. 2019. Disponível em: http://www.fao.org/livestock-systems/global-distributions/horses/en/, Acesso: em 12 de julho de 2019.

HARRIS, P.A.; ELLIS, A.D.; FRADINHO, M.J.; JANSSON, A.; JULLIAND, V.; LUTHERSSON, N.; SANTOS, A.S. VERVIERT, I. Review: Feeding conserved forage to horses: recent advances and recommendations. Animal, v.11, p.958-967, 2017. https://doi.org/10.1017/S1751731116002469

HOFFMANN, G.; BENTKE, A.; ROSE –MEIRHÖFER, S.; AMMON, C.; MAZETTI, P.; HARDARSON, G.H. Estimation of the body weight of Icelandic horses. Journal of Equine Veterinary Science, v.33, p.893-895, 2013. https://doi.org/10.1016/j.jevs.2013.01.002

IBGE – Instituro Brasileiro de Geografia e Estatística. 2017. Disponível em: https://seriesestatisticas.ibge.gov.br/series.aspx?vcodigo=PPM01. Acesso em: 12 de julho de 2019.

JENSEN, R.B.; DANIELSEN, S.H.; TAUSON, A.H. Body condition score, morphometric measurements and estimation of body weight in mature Icelandic horses in Denmark. Acta Veterinaria Scandinavica, v.58, p.59, 2016. https://doi.org/10.1186/s13028-016-0240-5

HEINRICHS, A.J.; ROGGERS, G.W.; COOPER, J.B. Predicting body weight and wither height in Holstein heifers using body measurements. Journal of Dairy Science, v.75, p. 3576-3581, 1992. https://doi.org/10.3168/jds.S0022-0302(92)78134-X

MAPA - Ministério da Agricultura, Pecuária e Abastecimento. Review of the Study of the Agribusiness Complex of the Horse 2016 Disponível em: http://www.agricultura.gov.br/assuntos/camaras-setoriais-tematicas/documentos/camaras-setoriais/equideocultura/anos-anteriores/revisao-do-estudo-do-complexo-do-agronegocio-do-cavalo, Acesso em: 12 de julho de 2019.

MARTINSON, K.L.; COLEMAN, R.C.; RENRAHL, A.K.; FANG, Z.; McCUE, M.E. Estimation of body weight and development of a body weight score for adult equids using morphometric measurements. Journal of Animal Science, v.92, p.2230–2238, 2014. https:/doi.org/10.2527/jas.2013-6689

NEDER, A.G.; PÉRES, A.; PERRONE, G. Assessment of body weight of the Criollo horse using morphometric measurements: confirmation of published equations for other breeds and development of a new formula. Revista electrónica de Veterinaria, v.10, p.1-8, 2009.

NETER, J. KUTNER, M.H.; NAUCHTSHEIM, C.J.; WASSERMAN W. Applied Linear Statistical Models. Chicago: Irwin, 1996. 1408p.

OWERS, R.; CHUBBOCK, S. Fight the fat!. Equine Veterinary Journal, v.45, 2013. https://doi.org/10.1111/evj.12008

REZENDE, M.P.G.; ABREU, U.G.P.; SANTOS, S.A.; SOUZA, J.C.; SITORSKY, L.G. Body morphology of purebred and crossbred Quarter horses used in Lasso competitions in Mato Grosso do Sul. Archivos de Zootecnia, v.64, p.1-3, 2015. http://dx.doi.org/10.21071/az.v64i246.395

SALAZAR, M.C.; ADEGBEYE, M.J.; ELGHANDOUR, M.M.M.Y.; PILEGO, A.B.; MELLADO, M.; HASSAN, A.; SALEM, A.Z.M. The Dietary Components and Feeding Management as Options to Offset Digestive Disturbances in Horses. Journal of Equine Veterinary Science, v.74, p.103-110, 2019. https://doi.org/10.1016/j.jevs.2018.12.017

SOUZA, J.C.; REZENDE, M.P.G.; RAMIRES, G.G.; GONÇALVES, V.T.; SOUZA, C.F.; OLIVEIRA, N.M.; RIBEIRO, R.V. Phenotypic traits of equines raised in the Pantanal of Mato Grosso do Sul. Semina. Ciências Agrárias, v.36, p.3341-3352, 2015. https://doi.org/10.5433/1679-0359.2015v36n5p3341-3352.

WAGNER, E.L.; TYLER, P.J. A Comparison of weight estimation methods in adult horses. Journal of Equine Veterinary Science, v.31, p.706-710, 2011. https://doi.org/10.1016/j.jevs.2011.05.002

Downloads

Publicado

31-08-2021

Edição

Seção

PRODUÇÃO DE NÃO RUMINANTES

Como Citar

Accuracy and reliability of two body weight estimators based on linear measurements in horses. (2021). Boletim De Indústria Animal, 78, 1-13. https://doi.org/10.17523/bia.2021.v78.e1498

Artigos mais lidos pelo mesmo(s) autor(es)

<< < 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 > >>