• M.A. Iñigo Universidad Politécnica de Madrid
  • J.C. De Blas Universidad Politécnica de Madrid
  • P. Cachaldora COREN
  • P. García-Rebollar Universidad Politécnica de Madrid




crude glycerol, biofuels, lactating does, fattening rabbits, performance


The aim of this work was to study the effect of dietary inclusion of 2.5 or 5.0% of glycerol in substitution for starch on performance of lactating does and fattening rabbits.  Over four consecutive reproductive cycles, a total of 81 New Zealand ´ Californian rabbit does and 813 young rabbits weaned at 25 (fattening trial 1) or 35 (fattening trial 2) days of age were allocated at random to the experimental treatments.  Inclusion of glycerol in the diet up to 5% did not influence total feed consumption of does and suckling rabbits, body weight and bioelectrical impedance of does at parturition or at day 21 of lactation and litter weight at weaning, or reproductive efficiency.  Substitution of starch with glycerol did not affect feed intake, weight gain or mortality during fattening.  The results of the current study indicate that crude glycerol from the biofuel industry can be used at levels up to 5% in rabbit diets without any detrimental or beneficial effect on performance.


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Author Biographies

M.A. Iñigo, Universidad Politécnica de Madrid

Departamento de Producción Animal. E.T.S. Ingenieros Agrónomos

J.C. De Blas, Universidad Politécnica de Madrid

Departamento de Producción Animal. E.T.S. Ingenieros Agrónomos

P. Cachaldora, COREN

Sociedad Cooperativa Galega

P. García-Rebollar, Universidad Politécnica de Madrid

Departamento de Producción Animal. E.T.S. Ingenieros Agrónomos


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