Necesidades de lisina en la fase de crecimiento de cerdos blancos grasos
-
-
[1] Universidad de Zaragoza
Universidad de Zaragoza
Zaragoza, 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.), Joaquín Balcells Teres (aut.), Vol. 1, 2013, ISBN 978-84-695-7684-7, págs. 129-131
- Idioma: español
- Títulos paralelos:
- Lysine requirements for growth of fatty commercial pigs
- Enlaces
-
Resumen
Lysine (lys) requirements for growth were studied in a trial with 200 Duroc x (Landrace x Large White) pigs, 50% barrows and 50% gilts of 26.3 ± 0.5 kg, receiving diets with 11, 9.1, 7.8 and 5.2 g lys/kg in a randomized block factorial design (2 sexes x 4 diets) with 5 replicates per treatment of 5 pigs per pen. Animals were fed the experimental feeds during 45 days. Productive performance results from all pigs and blood samples from three pigs per pen were studied. Average daily gain (ADG) and feed conversion ratio (FCR) were affected by diet, being the response curvilinear and independent of sex which allowed setting the requirements of lys as 9.68 and 9.52 g/kg to saturate the response of ADG and FCR, respectively. Serum triglycerides and cholesterol increased and albumin decreased when dietary lys content was restricted, while serum urea increased for the diet recording the lowest ideal protein content (5.2 g lys/kg and 35 g lys/kg crude protein).
