Citrus pulp as an alternative feedstuff for heavy weight pigs feeding: preliminary results | La pulpa cítrica como ingrediente alternativo en alimentación de cerdos pesados: resultados preliminares
2009
Cerisuelo, A., Instituto Valenciano de Investigaciones Agrarias, Segorbe, Castellón (España). Centro de Investigación y Tecnología Animal | Moset, V., Instituto Valenciano de Investigaciones Agrarias, Segorbe, Castellón (España). Centro de Investigación y Tecnología Animal | Olivas, I., Instituto Valenciano de Investigaciones Agrarias, Segorbe, Castellón (España). Centro de Investigación y Tecnología Animal | Villagrá, A., Instituto Valenciano de Investigaciones Agrarias, Segorbe, Castellón (España). Centro de Investigación y Tecnología Animal | Piquer, O., Universidad Cardenal Herrera-CEU, Moncada, Valencia (España). Facultad de Veterinaria | Fernández, C., Universidad Politécnica de Valencia (España). Inst. de Ciencia y Tecnología Animal | Torres, A., Universidad Politécnica de Valencia (España). Inst. de Ciencia y Tecnología Animal | Gasa, J., Universitat Autònoma de Barcelona, Bellaterra (España). Facultat de Veterinària | Lainez, M., Instituto Valenciano de Investigaciones Agrarias, Segorbe, Castellón (España). Centro de Investigación y Tecnología Animal
Nutritive value of ensiled citrus pulp on finishing pigs is being evaluated. Forty pigs (20 males and 20 females) of 85.3 +/- 5.05 kg body weight were allocated into 4 treatments based on different citrus pulp inclusion levels in the diet: T0: 0, T5: 50, T10: 100 and T15: 150 g per kg on a dry-matter (DM) basis. Experimental diets were formulated to be isoenergetic and isoproteic (3.4-3.5 Mcal ME/kgDM; 1.09-1.10% in DM). The feeding level was 2.5 times energy required for maintenance. The pigs were allowed a 5-week adaptation period. Then, total faeces from males were collected on three succesive days and analysed for DM and pH. Body weight was recorded weekly and intestinal microflora was investigated from both, males and females, during the adaptation period and at the end of the study (8 pigs/treatment). At slaughter, carcass weight and backfat at gluteus medius was recorded. Pigs offered the highest levels of citrus pulp in the diet (10 and 15%) reduced significantly Enterobacteriaceae and Lactobacillus population (P<0.01), and faeces DM content (T15; P<0.01). No differences were detected in backfat at gluteus medius muscle but carcass yield decreased with increasing citrus pulp level in the diet. It was concluded that inclusion of citrus pulp up to 10-15% in the diet of growing pigs can modulate microbiota but lead to less firm faeces and lower carcass yield.
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