Inclusion of summer turnip (Brassica rapa) as summer supplement for dairy cows in farms of the Ranco Province
The aim of the study was to analyze the diet composition, utilization of summer turnips and its relation with milk production in grazing dairy cows from 35 dairy farms in the Province of Ranco, Los Ríos Region, Chile, during summer 2014. Data regarding agronomical features of summer turnip, dairy herd information, milk production and diet composition were obtained. The diets offered were based on permanent pastures. Summer turnip yielded between 0.47 to 10.13 t DM/ha. This variation was influenced by the crop management and the edapho-climatic conditions of each place. The relative proportion of summer turnip in the diet varied from 2.6 to 40.7% and utilization efficiency averaged 76.5%. The intake of summer turnips presented a wide range. A high summer turnip intake resulted in a decrease in concentrate supplementation, suggesting that farmers use summer turnip as an alternative to concentrate supplementation. The total dry matter and metabolizable energy intake were positively correlated with increasing quantities of summer turnip and concentrate in the diet, resulting in greater milk production. Low dry matter intakes were related with low milk production, regardless the level of inclusion of each component and the nutritional composition of the diet.
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Facultad de Ciencias Agrarias. Universidad Austral de Chile
2015
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rev-agrosur-cl-article-41002019-09-04T20:57:08Z Inclusion of summer turnip (Brassica rapa) as summer supplement for dairy cows in farms of the Ranco Province Inclusión del Nabo forrajero (Brassica rapa) como suplemento estival en dietas ofrecidas a vacas lecheras en predios de la Provincia de Ranco Aucal, S. Balocchi, O. Keim, J. P. Nabo forrajero vacas lecheras a pastoreo producción de leche análisis multivariado Summer turnip grazing dairy cows milk production multivariate analysis The aim of the study was to analyze the diet composition, utilization of summer turnips and its relation with milk production in grazing dairy cows from 35 dairy farms in the Province of Ranco, Los Ríos Region, Chile, during summer 2014. Data regarding agronomical features of summer turnip, dairy herd information, milk production and diet composition were obtained. The diets offered were based on permanent pastures. Summer turnip yielded between 0.47 to 10.13 t DM/ha. This variation was influenced by the crop management and the edapho-climatic conditions of each place. The relative proportion of summer turnip in the diet varied from 2.6 to 40.7% and utilization efficiency averaged 76.5%. The intake of summer turnips presented a wide range. A high summer turnip intake resulted in a decrease in concentrate supplementation, suggesting that farmers use summer turnip as an alternative to concentrate supplementation. The total dry matter and metabolizable energy intake were positively correlated with increasing quantities of summer turnip and concentrate in the diet, resulting in greater milk production. Low dry matter intakes were related with low milk production, regardless the level of inclusion of each component and the nutritional composition of the diet. El objetivo de este estudio fue analizar la oferta de alimentos, utilización del nabo forrajero y su relación con la producción de vacas lecheras en 35 predios de la Provincia del Ranco, Región de Los Ríos, Chile durante la época estival 2014. Se recopiló información de los rebaños lecheros, producciones lecheras, componentes de las dietas ofrecidas, manejo agronómico e inclusión del nabo forrajero. La pradera constituyó la base de las dietas ofrecidas. La suplementación con nabo forrajero presentó un amplio rango de consumo, además se generalizó el uso de concentrados como suplemento ante una baja oferta de nabo forrajero y en menor cantidad con forrajes conservados y subproductos de la molinería. El rendimiento del cultivo de nabo forrajero presentó un rango de 0,47 a 10,13 t MS/ha, variación influenciada por el manejo del cultivo y las condiciones edafo-climáticas de cada lugar. La inclusión relativa del nabo en la dieta presentó un rango de 2,6 a 40,7% y la eficiencia de utilización promedió un 76,5%. El consumo total de materia seca y energía metabolizable fueron favorecidos al aumentar la oferta de nabo forrajero y concentrado comercial, presentando además una mayor producción lechera. Dietas con bajo consumo total de materia seca se caracterizaron por una baja producción lechera, independiente del nivel de inclusión de cada componente y la composición nutricional de la dieta. Facultad de Ciencias Agrarias. Universidad Austral de Chile 2015-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://revistas.uach.cl/index.php/agrosur/article/view/4100 10.4206/agrosur.2015.v43n3-02 Agro sur; Vol. 43 Núm. 3 (2015); 9-18 0719-4196 0304-8802 spa http://revistas.uach.cl/index.php/agrosur/article/view/4100/5147 http://revistas.uach.cl/index.php/agrosur/article/view/4100/5151 Derechos de autor 2015 Agro sur |
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Biblioteca de la Facultad de Ciencias Agrarias y Alimentarias de la UACH |
| language |
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| format |
Digital |
| author |
Aucal, S. Balocchi, O. Keim, J. P. |
| spellingShingle |
Aucal, S. Balocchi, O. Keim, J. P. Inclusion of summer turnip (Brassica rapa) as summer supplement for dairy cows in farms of the Ranco Province |
| author_facet |
Aucal, S. Balocchi, O. Keim, J. P. |
| author_sort |
Aucal, S. |
| title |
Inclusion of summer turnip (Brassica rapa) as summer supplement for dairy cows in farms of the Ranco Province |
| title_short |
Inclusion of summer turnip (Brassica rapa) as summer supplement for dairy cows in farms of the Ranco Province |
| title_full |
Inclusion of summer turnip (Brassica rapa) as summer supplement for dairy cows in farms of the Ranco Province |
| title_fullStr |
Inclusion of summer turnip (Brassica rapa) as summer supplement for dairy cows in farms of the Ranco Province |
| title_full_unstemmed |
Inclusion of summer turnip (Brassica rapa) as summer supplement for dairy cows in farms of the Ranco Province |
| title_sort |
inclusion of summer turnip (brassica rapa) as summer supplement for dairy cows in farms of the ranco province |
| description |
The aim of the study was to analyze the diet composition, utilization of summer turnips and its relation with milk production in grazing dairy cows from 35 dairy farms in the Province of Ranco, Los Ríos Region, Chile, during summer 2014. Data regarding agronomical features of summer turnip, dairy herd information, milk production and diet composition were obtained. The diets offered were based on permanent pastures. Summer turnip yielded between 0.47 to 10.13 t DM/ha. This variation was influenced by the crop management and the edapho-climatic conditions of each place. The relative proportion of summer turnip in the diet varied from 2.6 to 40.7% and utilization efficiency averaged 76.5%. The intake of summer turnips presented a wide range. A high summer turnip intake resulted in a decrease in concentrate supplementation, suggesting that farmers use summer turnip as an alternative to concentrate supplementation. The total dry matter and metabolizable energy intake were positively correlated with increasing quantities of summer turnip and concentrate in the diet, resulting in greater milk production. Low dry matter intakes were related with low milk production, regardless the level of inclusion of each component and the nutritional composition of the diet.
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| publisher |
Facultad de Ciencias Agrarias. Universidad Austral de Chile |
| publishDate |
2015 |
| url |
http://revistas.uach.cl/index.php/agrosur/article/view/4100 |
| work_keys_str_mv |
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