Prediction of dry matter intake and average daily gain of the LRNS (1.0.33) and NRC (2000) nutritional models in confined bulls in Paraguay

Prediction of dry matter intake and average daily gain of the LRNS (1.0.33) and NRC (2000) nutritional models in confined bulls in Paraguay

This work was carried out between August and December 2018, with the objective of contrasting the predictions of dry matter intake (DMI) and average daily gain (ADG) of the LRNS (1.0.33) and NRC (2000) nutritional models in bulls finished in confinement from the perspective of precision and accuracy in relation to the observed data. For this, performance data of 61 Brangus bulls and 55 Brahman bulls with initial live weights of 383.20±10.39 kg and 348.45±18.54 kg and average ages of 21±3 months for both breeds were used. The animals were weighed at the beginning and at the end of confinement with a previous fast of 14 hours. They were fed during confinement with a totally mixed ration (TMR) ad libitum formulated with a forage-concentrate ratio of 40:60. The observed DMI in kg was established from the reading of trays, collection and weighing of excess feed per pen during the confinement period that was then taken to an average per individual, while the observed ADG was determined from the difference of the initial weight and the final weight of the animals, divided by the days of confinement. A Simple Regression Analysis was performed between observed and predicted values. Both models predicted the DMI with precision and accuracy for the Brangus breed, however they underestimated by 3.08% (NRC 2000) and 6.16% (LRNS 1.0.33) in the Brahman breed. Regarding ADG, the LRNS (1.0.33) predicted with precision and accuracy for both races, while the NRC (2000) underestimated by 11.68% (Brangus) and 8.57% (Brahman). The NRC (2000) turned out to be a better estimator of the DMI, while the LRNS (1.0.33) was it for the ADG in bulls of both breeds (Brangus and Brahman) confined in climatic conditions of Paraguay.

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Main Authors: Portillo, Guido Arnaldo, Ocampos Olmedo, Diego Avilio, Paniagua Alcaraz , Pedro Luis, Alonzo Griffith , Luis Alberto
Format: Digital revista
Language:spa
Published: Asociacion Latinoamericana de Produccion Animal 2021
Online Access:https://ojs.alpa.uy/index.php/ojs_files/article/view/2869
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record_format ojs
institution ALPA
collection OJS
country Uruguay
countrycode UY
component Revista
access En linea
databasecode rev-alpa
tag revista
region America del Sur
libraryname Biblioteca ALPA
language spa
format Digital
author Portillo, Guido Arnaldo
Ocampos Olmedo, Diego Avilio
Paniagua Alcaraz , Pedro Luis
Alonzo Griffith , Luis Alberto
spellingShingle Portillo, Guido Arnaldo
Ocampos Olmedo, Diego Avilio
Paniagua Alcaraz , Pedro Luis
Alonzo Griffith , Luis Alberto
Prediction of dry matter intake and average daily gain of the LRNS (1.0.33) and NRC (2000) nutritional models in confined bulls in Paraguay
author_facet Portillo, Guido Arnaldo
Ocampos Olmedo, Diego Avilio
Paniagua Alcaraz , Pedro Luis
Alonzo Griffith , Luis Alberto
author_sort Portillo, Guido Arnaldo
title Prediction of dry matter intake and average daily gain of the LRNS (1.0.33) and NRC (2000) nutritional models in confined bulls in Paraguay
title_short Prediction of dry matter intake and average daily gain of the LRNS (1.0.33) and NRC (2000) nutritional models in confined bulls in Paraguay
title_full Prediction of dry matter intake and average daily gain of the LRNS (1.0.33) and NRC (2000) nutritional models in confined bulls in Paraguay
title_fullStr Prediction of dry matter intake and average daily gain of the LRNS (1.0.33) and NRC (2000) nutritional models in confined bulls in Paraguay
title_full_unstemmed Prediction of dry matter intake and average daily gain of the LRNS (1.0.33) and NRC (2000) nutritional models in confined bulls in Paraguay
title_sort prediction of dry matter intake and average daily gain of the lrns (1.0.33) and nrc (2000) nutritional models in confined bulls in paraguay
description This work was carried out between August and December 2018, with the objective of contrasting the predictions of dry matter intake (DMI) and average daily gain (ADG) of the LRNS (1.0.33) and NRC (2000) nutritional models in bulls finished in confinement from the perspective of precision and accuracy in relation to the observed data. For this, performance data of 61 Brangus bulls and 55 Brahman bulls with initial live weights of 383.20±10.39 kg and 348.45±18.54 kg and average ages of 21±3 months for both breeds were used. The animals were weighed at the beginning and at the end of confinement with a previous fast of 14 hours. They were fed during confinement with a totally mixed ration (TMR) ad libitum formulated with a forage-concentrate ratio of 40:60. The observed DMI in kg was established from the reading of trays, collection and weighing of excess feed per pen during the confinement period that was then taken to an average per individual, while the observed ADG was determined from the difference of the initial weight and the final weight of the animals, divided by the days of confinement. A Simple Regression Analysis was performed between observed and predicted values. Both models predicted the DMI with precision and accuracy for the Brangus breed, however they underestimated by 3.08% (NRC 2000) and 6.16% (LRNS 1.0.33) in the Brahman breed. Regarding ADG, the LRNS (1.0.33) predicted with precision and accuracy for both races, while the NRC (2000) underestimated by 11.68% (Brangus) and 8.57% (Brahman). The NRC (2000) turned out to be a better estimator of the DMI, while the LRNS (1.0.33) was it for the ADG in bulls of both breeds (Brangus and Brahman) confined in climatic conditions of Paraguay.
publisher Asociacion Latinoamericana de Produccion Animal
publishDate 2021
url https://ojs.alpa.uy/index.php/ojs_files/article/view/2869
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spelling oai:ojs.ojs.alpa.uy:article-28692022-01-05T04:24:46Z Prediction of dry matter intake and average daily gain of the LRNS (1.0.33) and NRC (2000) nutritional models in confined bulls in Paraguay Predicción del consumo de materia seca y ganancia de diaria de peso mediante el uso de dos modelos nutricionales en toros terminados en confinamiento Portillo, Guido Arnaldo Ocampos Olmedo, Diego Avilio Paniagua Alcaraz , Pedro Luis Alonzo Griffith , Luis Alberto software de nutrición, simulación, alimentación, bovinos de carne, confinamiento This work was carried out between August and December 2018, with the objective of contrasting the predictions of dry matter intake (DMI) and average daily gain (ADG) of the LRNS (1.0.33) and NRC (2000) nutritional models in bulls finished in confinement from the perspective of precision and accuracy in relation to the observed data. For this, performance data of 61 Brangus bulls and 55 Brahman bulls with initial live weights of 383.20±10.39 kg and 348.45±18.54 kg and average ages of 21±3 months for both breeds were used. The animals were weighed at the beginning and at the end of confinement with a previous fast of 14 hours. They were fed during confinement with a totally mixed ration (TMR) ad libitum formulated with a forage-concentrate ratio of 40:60. The observed DMI in kg was established from the reading of trays, collection and weighing of excess feed per pen during the confinement period that was then taken to an average per individual, while the observed ADG was determined from the difference of the initial weight and the final weight of the animals, divided by the days of confinement. A Simple Regression Analysis was performed between observed and predicted values. Both models predicted the DMI with precision and accuracy for the Brangus breed, however they underestimated by 3.08% (NRC 2000) and 6.16% (LRNS 1.0.33) in the Brahman breed. Regarding ADG, the LRNS (1.0.33) predicted with precision and accuracy for both races, while the NRC (2000) underestimated by 11.68% (Brangus) and 8.57% (Brahman). The NRC (2000) turned out to be a better estimator of the DMI, while the LRNS (1.0.33) was it for the ADG in bulls of both breeds (Brangus and Brahman) confined in climatic conditions of Paraguay. Este trabajo fue realizado entre agosto y diciembre de 2018, con el objetivo de contrastar las predicciones del consumo de materia seca (CMS) y la ganancia diaria de peso (GDP) de los modelos nutricionales LRNS (1.0.33) y NRC (2000) en toros terminados en confinamiento desde la perspectiva de la precisión y exactitud en relación a los datos observados. Para esto se utilizaron datos de desempeño de 61 toros Brangus y 55 toros Brahman con pesos vivos iniciales de 383,20±10,39 kg y 348,45±18,54 kg y edades promedio de 21±3 meses para ambas razas. Los animales fueron pesados al inicio y al final del confinamiento con un ayuno previo de 14 horas. Los mismos fueron alimentados durante el confinamiento con una ración totalmente mezclada (RTM) ad libitum formulada con una relación forraje-concentrado de 40:60. El CMS observado (kg/d) fue establecido a partir de la lectura de bateas, colecta y pesaje de alimento sobrante por corral durante el periodo de confinamiento que luego fue llevado a un promedio por individuo, mientras que la GDP observada (kg/d) se determinó a partir de la diferencia del peso inicial y el peso final de los animales, dividido por los días de duración del confinamiento. Se realizó un Análisis de Regresión Simple entre valores observados y pronosticados. Ambos modelos predijeron el CMS con precisión y exactitud para la raza Brangus, no obstante subestimaron en 3,08% (NRC 2000) y 6,16% (LRNS 1.0.33) en la raza Brahman. Con relación a la GDP, el LRNS (1.0.33) predijo con precisión y exactitud para ambas razas, mientras que el NRC (2000) subestimó en 11,68% (Brangus) y 8,57% (Brahman). El NRC (2000) resultó ser mejor estimador del CMS, mientras que el LRNS (1.0.33) lo fue para la GDP en toros de ambas razas (Brangus y Brahman) confinados en condiciones climáticas del Paraguay. Asociacion Latinoamericana de Produccion Animal 2021-12-17 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo cientifico original Texto application/pdf text/html text/xml https://ojs.alpa.uy/index.php/ojs_files/article/view/2869 10.53588/alpa.300102 Latin American Archives of Animal Production; Vol. 30 No. 1 (2022); 9-17 Archivos Latinoamericanos de Producción Animal; Vol. 30 Núm. 1 (2022); 9-17 2075-8359 1022-1301 spa https://ojs.alpa.uy/index.php/ojs_files/article/view/2869/1517 https://ojs.alpa.uy/index.php/ojs_files/article/view/2869/1532 https://ojs.alpa.uy/index.php/ojs_files/article/view/2869/1533 Copyright (c) 2021 Guido Arnaldo Portillo, Diego Avilio Ocampos Olmedo , Pedro Luis Paniagua Alcaraz , Luis Alberto Alonzo Griffith https://creativecommons.org/licenses/by-nc-sa/4.0

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