Is there a response to strategic supplementation of yearling steers grazing sudangrass and forage sorghum?
Within the context of sustainable intensification of extensive livestock production systems, the inclusion of reduced areas of high productivity combined with strategic supplementation would allow an animal production increase. Sudangrass and direct grazing sorghum appear as alternatives because of their agroecological adaptation and high forage production. To evaluate the effect of these forage basis combined with the use of protein supplementation on average daily gain (ADG) and live weight (LW), 40 Hereford yearling steers (LW, Year 1 = 287 ± 35 kg; Year 2 = 271 ± 19 kg) were used in a random 2 x 2 factorial design for two years, where forage basis (sudangrass – Sd – or BMR sorghum – Sg) and supplementation (0.8% LW with sunflower expeller: with – S – or without – NOS) were evaluated. The animals were randomly allocated to 4 treatments with two replicates: SdNOS, SdS, SgNOS, and SgS. Average daily gain was significantly affected by forage basis and supplementation (Sd = 0.833 vs. Sg = 0.899 kg animal-1 d-1, P < 0.05; NOS = 0.739 kg animal-1 d-1 vs. S = 0.992 kg animal-1 d-1, P < 0.01), as was final LW (Sd = 342.3 vs. Sd = 347.1 kg, P < 0.05; NOS = 334.7 kg vs. S =354.7 kg; P < 0.01). The use of forage sorghums combined with strategic supplementation improved the rearing of steers during summer.
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Facultad de Ciencias Agrarias. Universidad Austral de Chile
2019
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rev-agrosur-cl-article-60332022-07-20T20:33:49Z Is there a response to strategic supplementation of yearling steers grazing sudangrass and forage sorghum? ¿Existe respuesta a la suplementación estratégica en novillos de recría pastoreando sudangrás y sorgo forrajero? Cazzuli, F. Lagomarsino, X. Luzardo, S. Montossi, F. novillos sudangrás sorgo forrajero BMR suplementación expeller de girasol Steers Sudangrass forage crop BMR sorghum forage crop Supplementation Sunflower expeller Within the context of sustainable intensification of extensive livestock production systems, the inclusion of reduced areas of high productivity combined with strategic supplementation would allow an animal production increase. Sudangrass and direct grazing sorghum appear as alternatives because of their agroecological adaptation and high forage production. To evaluate the effect of these forage basis combined with the use of protein supplementation on average daily gain (ADG) and live weight (LW), 40 Hereford yearling steers (LW, Year 1 = 287 ± 35 kg; Year 2 = 271 ± 19 kg) were used in a random 2 x 2 factorial design for two years, where forage basis (sudangrass – Sd – or BMR sorghum – Sg) and supplementation (0.8% LW with sunflower expeller: with – S – or without – NOS) were evaluated. The animals were randomly allocated to 4 treatments with two replicates: SdNOS, SdS, SgNOS, and SgS. Average daily gain was significantly affected by forage basis and supplementation (Sd = 0.833 vs. Sg = 0.899 kg animal-1 d-1, P < 0.05; NOS = 0.739 kg animal-1 d-1 vs. S = 0.992 kg animal-1 d-1, P < 0.01), as was final LW (Sd = 342.3 vs. Sd = 347.1 kg, P < 0.05; NOS = 334.7 kg vs. S =354.7 kg; P < 0.01). The use of forage sorghums combined with strategic supplementation improved the rearing of steers during summer. En el marco de una intensificación sostenible de la ganadería extensiva, la inclusión de áreas reducidas de alta productividad combinada con suplementación estratégica permitiría mejorar la productividad animal. El uso de sudangrás o sorgo forrajero es una alternativa dada su mejor adaptación agroecológica a suelos más marginales y alta producción forrajera. Con el objetivo de evaluar el efecto de estas dos bases forrajeras combinadas con suplementación proteica sobre la ganancia media diaria (GMD) y el peso vivo (PV), por dos años, 40 novillos Hereford de sobreaño (PV, Año 1 = 287 ± 35 kg; Año 2 = 271 ± 19 kg) fueron utilizados en un diseño de parcelas al azar con un arreglo factorial de 2 x 2, en donde se evaluó la base forrajera (sudangrás – Sd – o sorgo forrajero BMR – Sg) y la suplementación (0,8% del PV con expeller de girasol: con –CS– o sin –SS). Los novillos fueron asignados al azar a 4 tratamientos con dos repeticiones cada uno: SdSS, SdCS, SgSS y SgCS. La GMD fue afectada significativamente por la base forrajera y suplementación (Sd = 0,833 vs. Sg = 0,899 kg animal-1 d-1, P < 0,05; SS = 0,739 kg animal-1 d-1, CS = 0,992 kg animal-1 d-1, P < 0,01), así como el PV final (Sd = 342,3 vs. Sd = 347,1 kg, P < 0,05; SS = 334,7 kg, CS =354,7 kg, P < 0,01). El uso de sorgos forrajeros con suplementación estratégica mejoró la recría estival de novillos. Facultad de Ciencias Agrarias. Universidad Austral de Chile 2019-08-30 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf http://revistas.uach.cl/index.php/agrosur/article/view/6033 10.4206/agrosur.2019.v47n2-02 Agro sur; Vol. 47 Núm. 2 (2019); 7-17 0719-4196 0304-8802 spa http://revistas.uach.cl/index.php/agrosur/article/view/6033/7143 Derechos de autor 2019 Agro sur |
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Cazzuli, F. Lagomarsino, X. Luzardo, S. Montossi, F. |
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Cazzuli, F. Lagomarsino, X. Luzardo, S. Montossi, F. Is there a response to strategic supplementation of yearling steers grazing sudangrass and forage sorghum? |
author_facet |
Cazzuli, F. Lagomarsino, X. Luzardo, S. Montossi, F. |
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Cazzuli, F. |
title |
Is there a response to strategic supplementation of yearling steers grazing sudangrass and forage sorghum? |
title_short |
Is there a response to strategic supplementation of yearling steers grazing sudangrass and forage sorghum? |
title_full |
Is there a response to strategic supplementation of yearling steers grazing sudangrass and forage sorghum? |
title_fullStr |
Is there a response to strategic supplementation of yearling steers grazing sudangrass and forage sorghum? |
title_full_unstemmed |
Is there a response to strategic supplementation of yearling steers grazing sudangrass and forage sorghum? |
title_sort |
is there a response to strategic supplementation of yearling steers grazing sudangrass and forage sorghum? |
description |
Within the context of sustainable intensification of extensive livestock production systems, the inclusion of reduced areas of high productivity combined with strategic supplementation would allow an animal production increase. Sudangrass and direct grazing sorghum appear as alternatives because of their agroecological adaptation and high forage production. To evaluate the effect of these forage basis combined with the use of protein supplementation on average daily gain (ADG) and live weight (LW), 40 Hereford yearling steers (LW, Year 1 = 287 ± 35 kg; Year 2 = 271 ± 19 kg) were used in a random 2 x 2 factorial design for two years, where forage basis (sudangrass – Sd – or BMR sorghum – Sg) and supplementation (0.8% LW with sunflower expeller: with – S – or without – NOS) were evaluated. The animals were randomly allocated to 4 treatments with two replicates: SdNOS, SdS, SgNOS, and SgS. Average daily gain was significantly affected by forage basis and supplementation (Sd = 0.833 vs. Sg = 0.899 kg animal-1 d-1, P < 0.05; NOS = 0.739 kg animal-1 d-1 vs. S = 0.992 kg animal-1 d-1, P < 0.01), as was final LW (Sd = 342.3 vs. Sd = 347.1 kg, P < 0.05; NOS = 334.7 kg vs. S =354.7 kg; P < 0.01). The use of forage sorghums combined with strategic supplementation improved the rearing of steers during summer. |
publisher |
Facultad de Ciencias Agrarias. Universidad Austral de Chile |
publishDate |
2019 |
url |
http://revistas.uach.cl/index.php/agrosur/article/view/6033 |
work_keys_str_mv |
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