Cerrar

No. de sistema: 000048194

LDR _ _ 00000nab^^22^^^^zza^4500
008 _ _ 170620m20179999xx^^r^p^^^^^^z0^^^a0eng^d
040 _ _ a| ECO
c| ECO
044 _ _ a| xx
245 0 0 a| Intake, digestibility, nitrogen balance and energy utilization in heifers fed low-quality forage and Leucaena leucocephala
520 1 _ a| The aim of this study was to assess the e ff ect of the inclusion of Leucaena leucocephala on dry matter (DM) intake and digestibility, nitrogen (N) balance and energy utilization in cattle fed a basal ration of Pennisetum purpureum and housed in metabolic crates. Five crossbred ( Bos taurus × Bos indicus ) heifers (BW: 295 ± 6 kg) were fed chopped P. purpureum grass and fi ve increasing levels of L. leucocephala (0, 20, 40, 60 and 80% of DM) in a 5 × 5 Latin square design. The intake of DM was similar (P > 0.05) among treatments, with an average of 7.03 kg of DM/ day. While the crude protein intake (CPI) linearly increased (P < 0.001) with the inclusion of L. leucocephala , the DM digestibility (average 492.3 g/kg DM) and OM digestibility (average 501.6 g/kg OM) were not a ff ected (P > 0.05) by the incorporation of L. leucocephala into the ration. The N intake and excretion in the urine increased linearly (P = 0.0001, 0.0001) as the level of L. leucocephala in the ration increased. In addition, methane energy loss as a percentage of that in the control ration, was of only 61% (P = 0.0005) with 80% incorporation of L. leucocephala in the ration. We concluded that the inclusion of L. leucocephala has the capacity to reduce energy losses in the form of methane emissions. Nevertheless, the energy losses in the urine increased with the addition of L. leucocephala to the ration, with the optimal levels of incorporation in the ration fl uctuating between 20 and 40% of the ration DM, which had no e ff ects on the dry matter intake (DMI), organic matter intake (OMI) or the digestibility of dry matter (DMD).
650 _ 4 a| Alimento para el ganado
650 _ 4 a| Leucaena leucocephala
650 _ 4 a| Pennisetum purpureum
650 _ 4 a| Pastos
700 1 _ a| Piñeiro Vázquez, Ángel Trinidad
700 1 _ a| Jiménez Ferrer, Guillermo
c| Dr.
e| coaut.
700 1 _ a| Chay Canul, Alfonso Juventino
c| Doctor
e| coaut.
700 1 _ a| Casanova Lugo, Fernando
e| coaut.
700 1 _ a| Díaz Echeverria, Víctor Francisco
c| Maestro
e| coaut.
700 1 _ a| Ayala Burgos, Armín Javier
e| coaut.
700 1 _ a| Solorio Sánchez, Francisco Javier
e| coaut.
700 1 _ a| Aguilar Pérez, Carlos Fernando
e| coaut.
n| 24461175400
700 1 _ a| Ku Vera, Juan Carlos
e| coaut.
773 0 _
t| Animal Feed Science and Technology
g| Vol. 228 (June 2017), p. 194–201
x| 0377-8401
900 _ _ a| Solicítelo con su bibliotecario/a
901 _ _ a| Artículo con arbitraje
902 _ _ a| GOG / MM
904 _ _ a| Junio 2017
905 _ _ a| Artecosur
906 _ _ a| Producción Académica ECOSUR
LNG eng
Cerrar
*Solicítelo con su bibliotecario/a
Intake, digestibility, nitrogen balance and energy utilization in heifers fed low-quality forage and Leucaena leucocephala
Piñeiro Vázquez, Ángel Trinidad (autor)
Jiménez Ferrer, Guillermo (autor)
Chay Canul, Alfonso Juventino (autor)
Casanova Lugo, Fernando (autor)
Díaz Echeverria, Víctor Francisco (autor)
Ayala Burgos, Armín Javier (autor)
Solorio Sánchez, Francisco Javier (autor)
Aguilar Pérez, Carlos Fernando (autor)
Ku Vera, Juan Carlos (autor)
Contenido en: Animal Feed Science and Technology. Vol. 228 (June 2017), p. 194–201. ISSN: 0377-8401
No. de sistema: 48194
Tipo: - Artículo con arbitraje
PDF
  • Consulta (1)




Inglés

"The aim of this study was to assess the e ff ect of the inclusion of Leucaena leucocephala on dry matter (DM) intake and digestibility, nitrogen (N) balance and energy utilization in cattle fed a basal ration of Pennisetum purpureum and housed in metabolic crates. Five crossbred ( Bos taurus × Bos indicus ) heifers (BW: 295 ± 6 kg) were fed chopped P. purpureum grass and fi ve increasing levels of L. leucocephala (0, 20, 40, 60 and 80% of DM) in a 5 × 5 Latin square design. The intake of DM was similar (P > 0.05) among treatments, with an average of 7.03 kg of DM/ day. While the crude protein intake (CPI) linearly increased (P < 0.001) with the inclusion of L. leucocephala , the DM digestibility (average 492.3 g/kg DM) and OM digestibility (average 501.6 g/kg OM) were not a ff ected (P > 0.05) by the incorporation of L. leucocephala into the ration. The N intake and excretion in the urine increased linearly (P = 0.0001, 0.0001) as the level of L. leucocephala in the ration increased. In addition, methane energy loss as a percentage of that in the control ration, was of only 61% (P = 0.0005) with 80% incorporation of L. leucocephala in the ration. We concluded that the inclusion of L. leucocephala has the capacity to reduce energy losses in the form of methane emissions. Nevertheless, the energy losses in the urine increased with the addition of L. leucocephala to the ration, with the optimal levels of incorporation in the ration fl uctuating between 20 and 40% of the ration DM, which had no e ff ects on the dry matter intake (DMI), organic matter intake (OMI) or the digestibility of dry matter (DMD)."