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República Bolivariana de Venezuela
Ministerio del Poder Popular para la Educación Universitaria
Universidad Nacional Experimental de los Llanos Occidentales “Ezequiel Zamora” – UNELLEZ.
Vicerrectorado de Producción Agrícola
Subproyecto Bioquímica I
Niveles de urea en leche en sistemas
silvopastoriles
Realizado por:
Contreras Lenis
C.I.: 30.745.732
Bravo Angel
C.I.: 14.286.096
Perez Pedro
C.I.: 30.856.249
Torres Luis
C.I.: 21.023.470
Papelón; febrero de 2023
UBICACIÓN CONDICIONES CLIMÁTICAS
Altura: 1.000 m.s.n.m
Temperatura: 24°C
Precipitación: 750 mm/ño
Humedad: 75%
Evaporación: 1825 mm/año
PROPÓSITO
Los niveles de Urea son usados para realizar
ajustes en las concentraciones de proteína
o energía de la ración, con el fin de
conseguir un mayor aprovecha miento de
los nutrientes que son suministrados
Duración: 6 meses
Adaptación: 2 meses
Intervalo de recolección: 28 días
Duración
Leucaena Algarrobo
Guinea
Estrella
MÉTODOS Y MATERIALES
Grupos Donominación Prod. l/día Dieta Sistema Suplementos Muestra Raza Postparto
1 GLA 12-13 Guinea/Leucaena/algarrobo Alta densidad 2 kg. 8 Lucerna 37
2 ELA 11 Estrella/Leucaena/algarrobo Alta densidad 2 kg. 8 Lucerna 110
3 EA 7,5 Estrella/algarrobo Arboles dispersos 1 kg. 8 Lucerna 200
Calidad de los forrajes y los suplementos usados en la Reserva Natural el Hatico
RESULTADOS
Tratamiento de las muestras
- Se recolectaron 10 ml de leche
- 4 gotas de solución enzimas proteolíticas
- Centrifuga por 20 minutos.
- Se obtuvo 2 ml de Suero, luego se congeló.
- Método Ureasa/Berthelot
Se determinó que la concentración de
Urea fue de promedio 22,7±9,1 mg/dl con
un 68% de confianza.
De acuerdo con varios autores estos
valores pueden ser considerados normales
Comportamiento reproductivo
Días abierto promedio de 108±65
61% preñadas con una sola inseminación
No existe efecto negativo de los sistemas
silvopastoriles descritos, sobre el
comportamiento reproductivo, lo cual va
acorde con los niveles normales de urea
que se hallaron.

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Presentación Artículo.pptx

  • 1. República Bolivariana de Venezuela Ministerio del Poder Popular para la Educación Universitaria Universidad Nacional Experimental de los Llanos Occidentales “Ezequiel Zamora” – UNELLEZ. Vicerrectorado de Producción Agrícola Subproyecto Bioquímica I Niveles de urea en leche en sistemas silvopastoriles Realizado por: Contreras Lenis C.I.: 30.745.732 Bravo Angel C.I.: 14.286.096 Perez Pedro C.I.: 30.856.249 Torres Luis C.I.: 21.023.470 Papelón; febrero de 2023
  • 2. UBICACIÓN CONDICIONES CLIMÁTICAS Altura: 1.000 m.s.n.m Temperatura: 24°C Precipitación: 750 mm/ño Humedad: 75% Evaporación: 1825 mm/año PROPÓSITO Los niveles de Urea son usados para realizar ajustes en las concentraciones de proteína o energía de la ración, con el fin de conseguir un mayor aprovecha miento de los nutrientes que son suministrados Duración: 6 meses Adaptación: 2 meses Intervalo de recolección: 28 días Duración Leucaena Algarrobo Guinea Estrella
  • 3. MÉTODOS Y MATERIALES Grupos Donominación Prod. l/día Dieta Sistema Suplementos Muestra Raza Postparto 1 GLA 12-13 Guinea/Leucaena/algarrobo Alta densidad 2 kg. 8 Lucerna 37 2 ELA 11 Estrella/Leucaena/algarrobo Alta densidad 2 kg. 8 Lucerna 110 3 EA 7,5 Estrella/algarrobo Arboles dispersos 1 kg. 8 Lucerna 200
  • 4. Calidad de los forrajes y los suplementos usados en la Reserva Natural el Hatico
  • 5. RESULTADOS Tratamiento de las muestras - Se recolectaron 10 ml de leche - 4 gotas de solución enzimas proteolíticas - Centrifuga por 20 minutos. - Se obtuvo 2 ml de Suero, luego se congeló. - Método Ureasa/Berthelot Se determinó que la concentración de Urea fue de promedio 22,7±9,1 mg/dl con un 68% de confianza. De acuerdo con varios autores estos valores pueden ser considerados normales Comportamiento reproductivo Días abierto promedio de 108±65 61% preñadas con una sola inseminación No existe efecto negativo de los sistemas silvopastoriles descritos, sobre el comportamiento reproductivo, lo cual va acorde con los niveles normales de urea que se hallaron.