Resumo

LOPEZ, Y et al. Effect of the inclusion of mixed silage on the productive performance of grazing Pelibuey ewes. Pastos y Forrajes [online]. 2008, vol.31, n.1, pp.1-1. ISSN 0864-0394.

With the objective of evaluating feeding variants with mixed silage of pig excreta and citrus pulp (MSPECP) in a system with naturalized pastures and leucaena forage, a trial was developed with 48 Pelibuey ewes, in areas of the EEPF "Indio Hatuey", Matanzas province. A completely randomized design was used and the animals were distributed in four groups, in which the inclusion of MSPECP in 10% (T_II), 20% (T_III) and 30% (T_IV) of the total dry matter intake (DMI) was evaluated, with the presence of a control group 0% (T_I). The bromatological composition and nutrient intake of the MSPECP, live weight and body condition of the ewes, live weight at birth and mean daily gain (MDG) of the lambs were determined. The CP values of the silage varied between 13,4 and 14,6%. The CP intake was related to the inclusion percentage of silage (23,7; 49,0 and 70,2 g/day for T_II, T_III and T_IV, respectively). The live weight of the ewes did not show significant differences among treatments, with values higher than 30 kg in the whole campaign. The body condition showed values higher than 3,3 in the four experimental groups and remained over 2,4 at 30 days postpartum. The weight of the lambs at birth showed significant differences (p<0,05), with the best performance for treatments II, III and IV; while the weight gain of the lambs at 30 days did not differ.

Palavras-chave : Silage; excreta; reproduction.

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