Efecto de la sustitución de parte de la proteína de la dieta por urea, y de parte de la dieta por orujo de oliva, sobre los rendimientos productivos de terneros en cebo intensivo
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[1] Universidad de Zaragoza
Universidad de Zaragoza
Zaragoza, España
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- 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.), Joaquín Balcells Teres (aut.), Vol. 1, 2013, ISBN 978-84-695-7684-7, págs. 303-305
- Idioma: español
- Títulos paralelos:
- Effects of substitution of part of the diet’s protein by urea, and of part of the diet by olive cake, on performance of intensively reared beef cattle
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Resumen
One hundred and sixty Friesian steers (138±1.4 kg and 129±1.1 days old) were used in a randomized block design with four treatments: a control compound feed based on barley as majority cereal (C), the same control with 20% crude protein (on a dry matter (DM) basis) substituted by urea (U), control with 10% DM substituted by second-extraction pitted and dehydrated olive cake (O10), and control with 20% DM substituted by the same olive cake (O20). Compound feeds were formulated to contribute 16-17% (from 100 to 250 kg live weight-LW-) and 14.5-15% (from 250 to 450 kg LW) crude protein (CP), and were offered ad libitum. Barley straw was used as forage. Weight was recorded every three weeks and a digestibility trial was carried out at about 175 kg LW. Neither average daily gain (ADG) nor digestibility coefficients of DM, OM, CP and NDF were affected by diet, although there was a tendency (P<0.10) for CP digestibility to be lower in animals fed O20. In conclusion, substitution of 20% diet’s (barley based) CP by urea, and substitution of up to 20% diet’s DM by second extraction pitted and dehydrated olive cake, did not affect performance of intensively reared beef cattle.
