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Revista de Investigaciones Veterinarias del Perú

Print version ISSN 1609-9117


JIMENEZ A., Ronald et al. Potato by-products for sheep strategic feeding during the dry season in the Mantaro Valley. Rev. investig. vet. Perú [online]. 2010, vol.21, n.1, pp.11-18. ISSN 1609-9117.

The effect of increasing levels of supplementation with potato by-products on sheep body weight gain was evaluated. It was used 120 Junín sheep (69 female and 51 male) in a 2 x 5 factorial arrangement (two sexes x 5 feeding types). One treatment was 8 h/day of grazing and other four with addition of 0, 200, 400 and 600 g of potato by-products over ammoniated corn crop residue basal diet on 4-h a day grazing system for 24 days. Body weight gain was higher in males (p<0.01) in which the response pattern to the increasing levels of potato by-products supplementation was quadratic (p<0.01), and the level of 570 g of potato by-products gave a biological and economic performance similar to the full (8-h a day) grazing system. Data suggested that the inclusion of 570 g of potato byproducts on ammoniated corn crop residues is a practical and economical feeding strategy for fattening male sheep on a 4-h a day restricted grazing regime during the dry season in the Peruvian highlands.

Keywords : sheep; potatoes by-products; ammoniated corn crop residues; supplementation; fattening.

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