Comparisons between intake values observed and predicted by nutritional systems for confined nellore cattle

Authors

DOI:

https://doi.org/10.14393/BJ-v37n0a2021-54149

Keywords:

Electronic Feeding Systems, Equations, Measurement, Nutrition.

Abstract

This study compared the dry matter intake (DMI) of Nellore heifers and bulls in the feedlot, predicted by the BR-Corte (2010 and 2016) and NRC (2000) nutritional systems. Hence, two experiments were conducted in a completely randomized design. The first one used 47 Nellore bulls, not castrated, with an average initial weight of 413 kg, and 19 months of age. The second experiment used 24 Nellore heifers with an average initial weight of 300 kg and 23 months of age. The accuracy and approximation of the DMI estimates by the nutritional systems were adjusted with the simple linear regression model and the root mean square error of prediction (RMSEP). The DMI was 8.06 kg day-1 for Nellore heifers and 11.54 kg day-1 for bulls, which are higher than the values ​​ predicted by the nutritional systems. The NRC (2000) and BR-Corte (2010 and 2016) underestimated DMI in 20.84, 20.09, and 19.35% for heifers and 28.07, 16.20, and 11.78% for bulls, respectively. It was concluded that the BR-Corte 2010 and 2016 were the most suitable models to estimate the DMI of Nellore heifers and bulls for higher precision and accuracy.

Downloads

Download data is not yet available.

References

AFERRI, G. Exigências de energia e proteína e composição do ganho em peso compensátorio de novilhos Nelore por meio do indicador óxido de deutério. Tese (Doutorado). Pirassununga: Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo, 2007. Available from: www.teses.usp.br/teses/disponiveis/74/74131/tde-08022008.../DO1051340.pdf

ANELE, U. Y., DOMBY E.M. and GALYEAN, M.L. Predicting dry matter intake by growing and finishing beef cattle: Evaluation of current methods and equation development. Journal of Animal Science. 2014, 92, 2660-2667. https://doi.org/10.2527/jas.2014-7557

BARBOSA, F.A., et al. Ganho compensatório no desempenho e eficiência econômica de novilhos Nelore submetidos a diferentes regimes alimentares. Arquivo Brasileiro de Medicina Veterinária e Zootecnia. 2016, 68(1), 182-190. https://doi.org/10.1590/1678-4162-8212

BERCHIELLI, T.T., PIRES, A.V. and OLIVEIRA, S.G. Nutrição de Ruminantes. 2nd ed. Jaboticabal : FUNEP Fundação de Apoio a Pesquisa, Ensino e Extensão, 2011.

COCHRAN, W.G. and COX, G.M. Experimental Design. 2nd ed. New York: Wiley, 1957.

DETMANN, E., et al. Métodos para Análise de Alimentos. Visconde do Rio Branco: Suprema, 2012.

FERNANDES, H.J., et al. Ganho de Peso, Conversão alimentar, ingestão diária de nutrientes e digestibilidade de garrotes não castrados de três grupos genéticos em recria e terminação. Revista Brasileira de Zootecnia. 2004, 33(6), 2403-2411. https://doi.org/10.1590/S1516-35982004000900029

FORBES, J.M. The multifactorial nature of food intake control. Journal Animal Science. 2003, 81(2), 139–144. https://doi.org/10.2527/2003.8114_suppl_2E139x

FOX, D.G., TYLUTKI, T.P. and TEDESCHI, L.O. Sistema de carboidratos e proteínas líquidos para avaliação da nutrição de rebanhos e excreção de nutrientes (CNCPS Versão 5.0). Juiz de Fora: Embrapa Gado de Leite, 2003.

KLEIJNEN, J.P.C., BETTONVIL, B. and VAN GROENENDALL, W. Validation of trace-driven simulation models: a novel regression test. Management Science. 1998, 44, 812–819. https://doi.org/10.1287/mnsc.44.6.812

KOBAYASHI, K. and SALAM, M.U. Comparing simulated and measured values using mean squared deviation and its components. Agronomy Journal. 2000, 92(2), 345-352. https://doi.org/10.1007/s100870050043

MARCONDES, M.I., et al. Consumo e desempenho de animais alimentados individualmente ou em grupo e características de carcaça de animais Nelore de três classes sexuais. Revista Brasileira de Zootecnia. 2008, 37(12), 2243-2250. https://doi.org/10.1590/S1516-35982008001200023

McMENIMAN, J.P., DEFOOR, P.J. and GALYEAN, M.L. Evaluation of the national research council (1996) dry matter intake prediction equations and relationships between intake and performance by feedlot cattle. Journal of Animal Science. 2009, 87(3), 1138-1146. https://doi.org/10.2527/jas.2008-1326

NATIONAL RESEARCH COUNCIL – NRC. Nutrient requirements of beef cattle. 7th ed. rev. Washington: The National Academies Press, 2000.

National Research Council – NRC. Nutrient Requirements of Dairy Cattle. 7th ed. Washington, DC: The National Academies Press, 2001.

NATIONAL RESEARCH COUNCIL – NRC. Nutrient requirements of beef cattle. 8th ed. Washington, DC: The National Academies Press, 2016.

PAULINO, P.V.R., et al Desempenho produtivo de bovinos nelore de diferentes classes sexuais alimentados com dietas contendo dois níveis de oferta de concentrado. Revista Brasileira de Zootecnia. 2008, 37(6), 1079-1087. https://doi.org/10.1590/S1516-35982008000600019

RIBEIRO, J.S., et al. Consumo alimentar e sua predição pelos sistemas NRC, CNCPS e BR-CORTE, para tourinhos zebuínos confinados. Revista Ciência Agronômica. 2012, 43(4), 802-810. https://doi.org/10.1590/S1806-66902012000400023

RUBIANO, G.A.G., et al. Desempenho, características de carcaça e qualidade da carne de bovinos superprecoces das raças Canchim, Nelore e seus mestiços. Revista Brasileira de Zootecnia. 2009, 38(12), 2490-2498. https://doi.org/10.1590/S1516-35982009001200027

TEDESCHI, L.O. Model evaluation System. version 3.1.17. 2017. Available from: http://nutritionmodels.com/mes.html

TEDESCHI, L.O. Assessment of the adequacy of mathematical models. Agricultural Systems. 2006, 89, 225-247. https://doi.org/10.1016/j.agsy.2005.11.004

VALADARES FILHO, S.C., PAULINO, P.V.R. and MAGALHÃES, K.A. Exigências nutricionais de zebuínos e tabelas de composição de alimentos BR-Corte. Viçosa - MG: UFV, 2006.

VALADARES FILHO, S.C., et al. Exigências nutricionais de zebuínos puros e cruzados BR-Corte. 2nd ed. Viçosa - MG: UFV, 2010.

VALADARES FILHO, S.C., et al. BR-CORTE 3.0. Cálculo de exigências nutricionais, formulação de dietas e predição de desempenho de zebuínos puros e cruzados. 3. ed. Viçosa - MG: UFV, 2016.

Downloads

Published

2021-12-29

How to Cite

FERREIRA, A.M.S., PEDRO DA SILVA, S., DE FARIA, C.C.U.., MENDES, E.D.M. and FELIPE, E.F.., 2021. Comparisons between intake values observed and predicted by nutritional systems for confined nellore cattle. Bioscience Journal [online], vol. 37, pp. e37093. [Accessed5 November 2024]. DOI 10.14393/BJ-v37n0a2021-54149. Available from: https://seer.ufu.br/index.php/biosciencejournal/article/view/54149.

Issue

Section

Agricultural Sciences