Efecto de diferentes estrategias de restricción alimentaria sobre los rendimientos productivos de conejos en crecimiento

• R. Crespo ; C. Alonso ; A. Saiz ; A.I. García Ruiz ; M. Marco ^[1] ; N. Nicodemus
  1. [1] Universidad Politécnica de Madrid

     Universidad Politécnica de Madrid

     Madrid, España

     
• Localización: XVI Jornadas sobre Producción Animal: 19 y 20 de mayo de 2015, Zaragoza / Javier Álvarez Rodríguez (aut.), Begoña Panea Doblado (aut.), Jorge Hugo Calvo Lacosta (aut.), Mireia Blanco Alibés (aut.), José Alfonso Abecia Martínez (aut.), Daniel Villalba Mata (aut.), María Ángeles Latorre Górriz (aut.), Vol. 1, 2015, ISBN 978-84-606-7969-1, págs. 281-283
• Idioma: español
• Títulos paralelos:
  • Effect of diferent feeding restriction strategies on performance and carcass characteristics of growing rabbits
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• Resumen

  • The aim of this work was to study the effect of different feeding restriction strategies on growth performance and carcass characteristics of growing rabbits. A total of 600 rabbits were weaned at 34 days of age, housed in cages (5 animals per cage) that were randomly assigned to 5 treatments. Only one diet was formulated (crude protein: 16%; neutral detergent fiber: 34% digestible energy: 2450 Kcal/kg). Control treatment was fed ad libitum and the other 4 were restricted 80 and 70% of theoretical ad libitum intake, during all the fattening period or until 48 days. Feed intake and the animal weight from 34 to 48 and from 49 to 61 days of life were controlled. At the end of the fattening period, rabbits were slaughtered and the carcass weight and the weight of the entire digestive tract, liver, fullstomach, empty stomach, full cecum and empty cecum were measured. From 34 to 48 d restriction impaired (P<0.05) the feed conversion ratio and average daily gain. From 48 to 61 d there was a compensatory growth. Globally, the compensatory growth led to a better feed conversion ratio, with a similar final live weight. Internal organs increased (P<0.05) their size, when rabbits were fed ad libitum after the restriction period. Average mortality was 12.8% and it was not affected by treatments.