Cumulative growth of Melilotus alba Medikus. II. Forage quality.
The present study was carried out in order to estimate the quality of the cumulative growth in annual white sweet clover (Melilotus alba Medikus), its component fractions, and its variations over time. Evaluation started when the planta reached 16.5 cm in height (vegetative stage) and continued up to the fructification stage. Eight treatments (sampling dates) were arranged in a randomized complete block design with three replications. Total removal of forage was done at each sampling date. Crude protein % (CP %), neutral detergent fiber % (NOF %), and dry matter in situ digestibility % (OMISO %) of leaf and stem fractions and whole plant were estimated. Mathematical models representing the relationships between the independent variable "number of days from thirst cut" and the dependent variables CP %, NOF %, and OMISO % were developed. In each case the correspondent R' was calculated. Leat %, CP % and NOF % were used to predict whole plant OMISO %. High forage quality was maintained until flowering initiation. After this 5tage was reached, quality decreased with the advance of maturity mainly because of the decrease in leaf %. We conclude that annual white sweetclover should not be utilized after flowering to obtain high quality forage.
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oai:ojs.cerac.unlpam.edu.ar:article49222023-12-18T14:42:56Z Cumulative growth of Melilotus alba Medikus. II. Forage quality. Crecimiento acumulado de Melilotus alba Medikus. II. Calidad de la materia seca (l). Veneciano, J. H. Privitello, M. L. J. Terenti, O. A. Melilotus alba Medikus annual white sweetclover phenological stages forage quality Melilotus alba Medikus trébol de olor blanco calidad The present study was carried out in order to estimate the quality of the cumulative growth in annual white sweet clover (Melilotus alba Medikus), its component fractions, and its variations over time. Evaluation started when the planta reached 16.5 cm in height (vegetative stage) and continued up to the fructification stage. Eight treatments (sampling dates) were arranged in a randomized complete block design with three replications. Total removal of forage was done at each sampling date. Crude protein % (CP %), neutral detergent fiber % (NOF %), and dry matter in situ digestibility % (OMISO %) of leaf and stem fractions and whole plant were estimated. Mathematical models representing the relationships between the independent variable "number of days from thirst cut" and the dependent variables CP %, NOF %, and OMISO % were developed. In each case the correspondent R' was calculated. Leat %, CP % and NOF % were used to predict whole plant OMISO %. High forage quality was maintained until flowering initiation. After this 5tage was reached, quality decreased with the advance of maturity mainly because of the decrease in leaf %. We conclude that annual white sweetclover should not be utilized after flowering to obtain high quality forage. El presente trabajo se realizó con el objeto de determinar la calidad de las fracciones componentes del crecimiento acumulado de trébol de olor blanco (Melilotus alba Medikus) y sus fluctuaciones a través del tiempo. La evaluación se inició cuando las plantas alcanzaron 16,5 cm de altura, realizándose 8 muestreos hasta el estado de fructificación. En cada fecha se cortó la totalidad del forraje presente, efectuándose determinaciones de PB, FON y digestibilidad In situ en hoja, tallo y planta entera. Se calcularon las relaciones funcionales entre esos parámetros y la variable independiente "n” de días desde 10 corte", así como el valor predictivo de las variables % de hoja, PB y FON respecto a la digestibilidad in situ de la planta entera. Los tres parámetros mostraron una alta correlación con la digestibilidad. La calidad de la MS fue alta hasta el inicio de floración. A partir de entonces la misma se redujo acentuadamente, principalmente a causa de la disminución del % de hojas. La calidad de la fracción hojas varió escasamente a lo largo de la estación de crecimiento. Se concluye que la utilización del trébol de olor blanco. no debe postergarse más allá de iniciada la floración para obtener forraje de alta calidad. Facultad de Agronomía 2020-06-07 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://cerac.unlpam.edu.ar/index.php/semiarida/article/view/4922 Semiárida; Vol. 7 Núm. 2 (1994); 25-34 2408-4077 2362-4337 spa https://cerac.unlpam.edu.ar/index.php/semiarida/article/view/4922/5132 Derechos de autor 2020 J. H. Veneciano, M. L. J. Privitello, O. A. Terenti |
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| author |
Veneciano, J. H. Privitello, M. L. J. Terenti, O. A. |
| spellingShingle |
Veneciano, J. H. Privitello, M. L. J. Terenti, O. A. Cumulative growth of Melilotus alba Medikus. II. Forage quality. |
| author_facet |
Veneciano, J. H. Privitello, M. L. J. Terenti, O. A. |
| author_sort |
Veneciano, J. H. |
| title |
Cumulative growth of Melilotus alba Medikus. II. Forage quality. |
| title_short |
Cumulative growth of Melilotus alba Medikus. II. Forage quality. |
| title_full |
Cumulative growth of Melilotus alba Medikus. II. Forage quality. |
| title_fullStr |
Cumulative growth of Melilotus alba Medikus. II. Forage quality. |
| title_full_unstemmed |
Cumulative growth of Melilotus alba Medikus. II. Forage quality. |
| title_sort |
cumulative growth of melilotus alba medikus. ii. forage quality. |
| description |
The present study was carried out in order to estimate the quality of the cumulative growth in annual white sweet clover (Melilotus alba Medikus), its component fractions, and its variations over time. Evaluation started when the planta reached 16.5 cm in height (vegetative stage) and continued up to the fructification stage. Eight treatments (sampling dates) were arranged in a randomized complete block design with three replications. Total removal of forage was done at each sampling date. Crude protein % (CP %), neutral detergent fiber % (NOF %), and dry matter in situ digestibility % (OMISO %) of leaf and stem fractions and whole plant were estimated. Mathematical models representing the relationships between the independent variable "number of days from thirst cut" and the dependent variables CP %, NOF %, and OMISO % were developed. In each case the correspondent R' was calculated. Leat %, CP % and NOF % were used to predict whole plant OMISO %. High forage quality was maintained until flowering initiation. After this 5tage was reached, quality decreased with the advance of maturity mainly because of the decrease in leaf %. We conclude that annual white sweetclover should not be utilized after flowering to obtain high quality forage. |
| publisher |
Facultad de Agronomía |
| publishDate |
2020 |
| url |
https://cerac.unlpam.edu.ar/index.php/semiarida/article/view/4922 |
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