Supplementation with DDGS in grazing steers and its effect on productive performance and ultrasonographic measurements

Supplementation with DDGS in grazing steers and its effect on productive performance and ultrasonographic measurements

The effect of supplementation with distillers dried grains with corn solubles (DDGS) in castrated Brahman steers in a grazing system on productive performance variables and ultrasonographic measurements was evaluated. The study was carried out in a rotational grazing system in the humid tropics of Costa Rica, where the animals were supplemented for 110 days of finishing and underwent two nutritional supplements or treatments with 16 repetitions each, the first corresponded to a supplement for commercial use in the country and the second based on DDGS. The animals were weighted monthly to calculate average daily gain (ADG) and body condition score (BCS) was measured at the beginning and at the end of the fattening period. Ultrasonographic measurements of muscle depth, back fat thickness, rump fat thickness, and marbling were evaluated. No significant differences were obtained between the treatments (p > 0.05) for any of the variables. Still, the ADG values (0.98 kg for T1 and 0.99 kg for T2) are indicative of a good productive performance under the conditions of this study and higher than those regularly reported for Bos indicus animals (0.70-0.80 kg). Regarding the final BCS of the animals (6.91 for T1 and 6.81 for T2), the values obtained are a sign of good productive performance under these states. They are considered acceptable for Bos indicus animals in tropical conditions (CC 6-7). On the other hand, the measurements obtained are considered within the expected ranges for Bos indicus animals in tropical conditions. It was possible to conclude that supplementation with DDGS in grazing Brahman steers did not have effects equivalent to a commercial concentrate on productive performance and ultrasonographic measurements under the conditions of this study.

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Main Authors: Aguilar-Alfaro, Keylor, Rojas-Bourrillon, Augusto, Rodríguez-González, Julio, Villareal-Castro, Milton, Murillo-Bravo, Olger, Campos-Granados, Carlos M.
Format: Digital revista
Language:spa
Published: Universidad de Costa Rica 2023
Online Access:https://revistas.ucr.ac.cr/index.php/nutrianimal/article/view/57816
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id oai:portal.ucr.ac.cr:article57816
record_format ojs
institution UCR
collection OJS
country Costa Rica
countrycode CR
component Revista
access En linea
databasecode rev-nutrianimal
tag revista
region America Central
libraryname Escuela de Zootécnia
language spa
format Digital
author Aguilar-Alfaro, Keylor
Rojas-Bourrillon, Augusto
Rodríguez-González, Julio
Villareal-Castro, Milton
Murillo-Bravo, Olger
Campos-Granados, Carlos M.
spellingShingle Aguilar-Alfaro, Keylor
Rojas-Bourrillon, Augusto
Rodríguez-González, Julio
Villareal-Castro, Milton
Murillo-Bravo, Olger
Campos-Granados, Carlos M.
Supplementation with DDGS in grazing steers and its effect on productive performance and ultrasonographic measurements
author_facet Aguilar-Alfaro, Keylor
Rojas-Bourrillon, Augusto
Rodríguez-González, Julio
Villareal-Castro, Milton
Murillo-Bravo, Olger
Campos-Granados, Carlos M.
author_sort Aguilar-Alfaro, Keylor
title Supplementation with DDGS in grazing steers and its effect on productive performance and ultrasonographic measurements
title_short Supplementation with DDGS in grazing steers and its effect on productive performance and ultrasonographic measurements
title_full Supplementation with DDGS in grazing steers and its effect on productive performance and ultrasonographic measurements
title_fullStr Supplementation with DDGS in grazing steers and its effect on productive performance and ultrasonographic measurements
title_full_unstemmed Supplementation with DDGS in grazing steers and its effect on productive performance and ultrasonographic measurements
title_sort supplementation with ddgs in grazing steers and its effect on productive performance and ultrasonographic measurements
description The effect of supplementation with distillers dried grains with corn solubles (DDGS) in castrated Brahman steers in a grazing system on productive performance variables and ultrasonographic measurements was evaluated. The study was carried out in a rotational grazing system in the humid tropics of Costa Rica, where the animals were supplemented for 110 days of finishing and underwent two nutritional supplements or treatments with 16 repetitions each, the first corresponded to a supplement for commercial use in the country and the second based on DDGS. The animals were weighted monthly to calculate average daily gain (ADG) and body condition score (BCS) was measured at the beginning and at the end of the fattening period. Ultrasonographic measurements of muscle depth, back fat thickness, rump fat thickness, and marbling were evaluated. No significant differences were obtained between the treatments (p > 0.05) for any of the variables. Still, the ADG values (0.98 kg for T1 and 0.99 kg for T2) are indicative of a good productive performance under the conditions of this study and higher than those regularly reported for Bos indicus animals (0.70-0.80 kg). Regarding the final BCS of the animals (6.91 for T1 and 6.81 for T2), the values obtained are a sign of good productive performance under these states. They are considered acceptable for Bos indicus animals in tropical conditions (CC 6-7). On the other hand, the measurements obtained are considered within the expected ranges for Bos indicus animals in tropical conditions. It was possible to conclude that supplementation with DDGS in grazing Brahman steers did not have effects equivalent to a commercial concentrate on productive performance and ultrasonographic measurements under the conditions of this study.
publisher Universidad de Costa Rica
publishDate 2023
url https://revistas.ucr.ac.cr/index.php/nutrianimal/article/view/57816
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spelling oai:portal.ucr.ac.cr:article578162024-02-08T17:37:48Z Supplementation with DDGS in grazing steers and its effect on productive performance and ultrasonographic measurements Suplementación con DDGS en novillos en pastoreo y su efecto sobre el desempeño productivo y medidas ultrasonográficas Aguilar-Alfaro, Keylor Rojas-Bourrillon, Augusto Rodríguez-González, Julio Villareal-Castro, Milton Murillo-Bravo, Olger Campos-Granados, Carlos M. DDGS novillos suplementación ultrasonido condición corporal ganancia diaria de peso DDGS steers supplementation ultrasound body condition score average daily gain The effect of supplementation with distillers dried grains with corn solubles (DDGS) in castrated Brahman steers in a grazing system on productive performance variables and ultrasonographic measurements was evaluated. The study was carried out in a rotational grazing system in the humid tropics of Costa Rica, where the animals were supplemented for 110 days of finishing and underwent two nutritional supplements or treatments with 16 repetitions each, the first corresponded to a supplement for commercial use in the country and the second based on DDGS. The animals were weighted monthly to calculate average daily gain (ADG) and body condition score (BCS) was measured at the beginning and at the end of the fattening period. Ultrasonographic measurements of muscle depth, back fat thickness, rump fat thickness, and marbling were evaluated. No significant differences were obtained between the treatments (p > 0.05) for any of the variables. Still, the ADG values (0.98 kg for T1 and 0.99 kg for T2) are indicative of a good productive performance under the conditions of this study and higher than those regularly reported for Bos indicus animals (0.70-0.80 kg). Regarding the final BCS of the animals (6.91 for T1 and 6.81 for T2), the values obtained are a sign of good productive performance under these states. They are considered acceptable for Bos indicus animals in tropical conditions (CC 6-7). On the other hand, the measurements obtained are considered within the expected ranges for Bos indicus animals in tropical conditions. It was possible to conclude that supplementation with DDGS in grazing Brahman steers did not have effects equivalent to a commercial concentrate on productive performance and ultrasonographic measurements under the conditions of this study. Se evaluó el efecto de la suplementación con granos secos de destilería con solubles de maíz (DDGS) en novillos castrados y encastados brahman en un sistema de pastoreo sobre las variables de desempeño productivo y mediciones ultrasonográficas. El estudio se realizó en un sistema de pastoreo rotacional en el trópico húmedo de Costa Rica, donde los animales fueron suplementados durante 110 días de finalización y se sometieron a dos suplementos nutricionales, o tratamientos, con 16 repeticiones cada uno; el primero correspondió a un suplemento de uso comercial en el país y el segundo basado en DDGS. Los animales se pesaron mensualmente para calcular la ganancia diaria de peso (GDP) y la condición corporal (CC) se midió al inicio y al final del período de engorde. Las mediciones ultrasonográficas de profundidad muscular, grosor de grasa dorsal, grosor de grasa en la grupa y marmoleo fueron evaluadas. No se obtuvieron diferencias significativas entre los tratamientos (p > 0.05) para ninguna de las variables, pero los valores de GDP obtenidos (0,98 kg para el T1 y 0,99 kg para el T2) son indicadores de un buen desempeño productivo de los animales bajo las condiciones de este estudio y superiores a las que regularmente se reportan para animales Bos indicus (0,70-0,80 kg). Con respecto a la CC final de los animales (6,91 para el T1 y 6,81 para el T2), los valores obtenidos son señal de un buen desempeño productivo bajo las condiciones de este estudio y se consideran aceptables para animales Bos indicus en condiciones tropicales (CC 6-7). Por otro lado, las mediciones obtenidas se consideran dentro de los rangos esperados para animales Bos indicus en condiciones tropicales. Se pudo concluir que la suplementación con DDGS en novillos encastados con brahman no tuvo efectos equivalentes a un concentrado comercial sobre el desempeño productivo y las mediciones ultrasonográficas bajo las condiciones de este estudio. Universidad de Costa Rica 2023-11-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article Artículo audio/x-m4a application/pdf application/epub+zip text/html https://revistas.ucr.ac.cr/index.php/nutrianimal/article/view/57816 10.15517/nat.v17i2.57816 Nutrición Animal Tropical Journal; Vol. 17 No. 2 (2023): Nutrición Animal Tropical: July-December ; 89-108 Nutrición Animal Tropical; Vol. 17 Núm. 2 (2023): Nutrición Animal Tropical: julio-diciembre ; 89-108 2215-3527 10.15517/nat.v17i2 spa https://revistas.ucr.ac.cr/index.php/nutrianimal/article/view/57816/58418 https://revistas.ucr.ac.cr/index.php/nutrianimal/article/view/57816/58222 https://revistas.ucr.ac.cr/index.php/nutrianimal/article/view/57816/58223 https://revistas.ucr.ac.cr/index.php/nutrianimal/article/view/57816/58224 https://creativecommons.org/licenses/by-nc-nd/4.0/

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