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Zootecnia Tropical
Instituto Nacional de Investigaciones Agrícolas Venezuela
ISSN: 0798-7269
Vol. 22, No. 2, 2004, pp. 175-181
Bioline Code: zt04017
Full paper language: Spanish
Document type: Research Article
Document available free of charge

Zootecnia Tropical, Vol. 22, No. 2, 2004, pp. 175-181

 en Evaluation of frequencies and court heights in three cultivars Cynodon dactylon check for this species in other resources , (L.) Pers., under conditions of tropical very dry forest. (II) nutritious value
Yubizay M. Rojas, José J. Rincón , Yessica S. Gallardo y Mónica Leal

Abstract

The effect of cutting frequencies in three cultivars of Cynodon dactylon check for this species in other resources was evaluated; 28 days (F1), 42 days (F2) and 56 days (F3) at two cutting heights: 10 cm (A1) and 20 cm (A2). in an experimental design totally at random in a split plot. The three cultivars were: Giant (C1), Cross-1(C2) and Tifton-68 (C3). This evaluation was carried out in the Lara state (Venezuela), at the coordinated 9° 59' north latitude and 70° 09' longitude west during the dry period (February - August) 2001. Six, four and three samplings were done for F1, F2 and F3, respectively. the contents of PC, FDN and FDA were determined. The contents of PC showed significant differences among the cutting frequencies, where the 28 cut reports higher values, 13.15, 16.44 and 11.47% for C1, C2 and C3, respectively. There were not observed differences among cutting heights. For FND contents C1 was similar for the cutting frequencies ranging from 81.40-78.87%, and the cutting heights (81.58%-79.73%). For C2 and C3 it was observed significant differences (P<0.05), higher in F2 and C2 (78.99%) and ranging between 77.31%-77.56% for F1 and F3 in C3. There were not differences for A1 and A2. FAD either for heights as for cutting frequencies, expressed differences (P<0.05), showing higher values for F3 with 45.82% and 44.05% for C1 and C2, respectively, and 41.97% in F2 in C3. Among cultivars, A2 showed the higher values (P<0.05).

Keywords
Bermuda, Cynodon dactylon, Giant, Cross-1, Tifton-68, cutting frequency, cutting height.

 
 es Evaluación de frecuencias y alturas de corte en tres cultivares Cynodon dactylon check for this species in other resources , (L.) Pers., en condiciones de bosque muy seco tropical. II: Valor nutritivo
Yubizay M. Rojas, José J. Rincón , Yessica S. Gallardo y Mónica Leal

Resumen

Se evaluaron las frecuencias de corte; 28 días (F1), 42 días (F2) y 56 días (F3) y a dos alturas: 10 cm (A1) y 20 cm (A2), en 3 cultivares de Cynodon dactylon check for this species in other resources en un diseño experimental completamente al azar en parcelas divididas, los cultivares evaluados fueron Gigante (C1), Cross-1(C2) y Tifton-68 (C3), durante el periodo seco desde febrero - agosto de 2001. Se realizaron 6, 4 y 3 muestreos respectivamente para F1, F2 y F3, en el Estado Lara, en al área ubicada en las coordenadas 9° 59' latitud norte y 70° 09' longitud oeste. Se determinó el contenido de PC, FDN y FDA. La variable PC presenta diferencias significativas (P<0,05) entre las frecuencias, donde el corte a los 28 días reporta valores (%) más altos 13,15, 16,44 y 11,47 para C1, C2 y C3, respectivamente. No hubo diferencias entre las alturas. El contenido de FDN (%) en la C1 se muestra estadísticamente igual para las frecuencias (81,40-78,87) y las alturas de corte (81,58-79,73). Para C2 y C3 se observaron diferencias significativas (P<0,05) mayor con 78,99% en F2 para C2 y 77,31%-77,56% para F1 y F3 en C3. No hubo diferencias para A1 y A2. El contenido de FDA, tanto en las alturas como las frecuencias, expresó diferencias (P<0,05), reportándose el valor mas alto la F3 con 45,82% y 44,05% para C1 y C2, respectivamente y 41,97% en F2 en C3. En todas los cultivares la A2 presentó los mayores valores (P<0,05).

Palabras-clave
Cynodon dactylon, Gigante, Cross-1, Tifton-68.

 
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