Effect of dietary fatty acid profile on energy and fat retention in broiler chickens | Efecto del perfil en ácidos grasos de la ración sobre la retención de energía y grasa en pollos de carne
2009
Salari, S., Universitat Autònoma de Barcelona, Bellaterra (España). Facultat de Veterinària | Cánovas, E., Universitat Autònoma de Barcelona, Bellaterra (España). Facultat de Veterinària | Barroeta, E., Universitat Autònoma de Barcelona, Bellaterra (España). Facultat de Veterinària | Gasa, J., Universitat Autònoma de Barcelona, Bellaterra (España). Facultat de Veterinària
The aim of the present study was to determine the effect of different dietary fatty acid profile on the efficiency of energy, protein and fat retention in broiler chickens. A total of 64 female broiler chickens were randomly distributed into 8 different treatments, split up from 2 x 4 factorial arrangement with 2 different diets containing either 10% of tallow (T) or 10% of linseed oil (L) and 4 feeding levels: ad libitum (A); or restricted at 80%, 60% or 40% respect to (A). Excreta were quantitatively colleted from 28 to 49 days of age and animals were slaughtered at the start and at the end of the trial in order to calculate the retention efficiency. A reduction in body fat deposition was observed in the animals fed the L diet from those fed the S diet (SA: 10.08 vs. LA: 4.53 gAGT/b/d; P>0.0001). However, neither the protein (SA: 13.60 and LA: 13.19 g/b/d; NS) nor the energy retained (SA: 897.61 and LA: 795.18 kJ/d/d; NS) were significantly different between animals fed SA and LA diets.
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