Objetivos de selección en vacuno de carne en función de sus requerimientos energéticos y de la disponibilidad de pasto

• R. de Paz del Río ^[1] ; J.A. Jiménez Montero ^[1] ; A. Daza ^[1] ; R. Alenda ^[1]
  1. [1] Universidad Politécnica de Madrid

     Universidad Politécnica de Madrid

     Madrid, España

     
• Localización: XV Jornadas sobre Producción Animal: 14 y 15 de mayo de 2013, Zaragoza / Jorge Hugo Calvo Lacosta (aut.), Isabel Casasús Pueyo (aut.), Margalida Joy Torrens (aut.), Javier Álvarez Rodríguez (aut.), Luis Varona Aguado (aut.), Begoña Panea Doblado (aut.), Carlos Calvete Margolles (aut.), Joaquim Barcells Teres (aut.), Vol. 2, 2013, ISBN 978-84-695-7684-7, págs. 448-450
• Idioma: español
• Títulos paralelos:
  • Selection objectives in beef cattle based in their energy requirements and graze availability
• Enlaces
  • Texto Completo Libro  1 (pdf)   2 (pdf) 
• Resumen

  • In order to determinate which may be the main selection objectives in beef cattle production, it has been analyzed the influence in the energy requirements of calving season, live weight of the cows and milk production, related with the graze availability. The annual supplementation cost is significant, compared with the price of a weaned calf (550 €/calf), and it increases about 100 €/calved cow, year and 100 kg PV gained. A cow with a weight of 650 kg, the current level of milk production and calving in the unfavourable season (june-july-august), has similar supplementation cost as the value of the weaned calf.