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Revista Brasileira de Zootecnia

versão impressa ISSN 1516-3598

Resumo

ARAUJO, Paulo Renato Barros et al. Replacement of corn by forage cactus in the total mixed rations for crossbreed lactating cows. R. Bras. Zootec. [online]. 2004, vol.33, n.6, suppl.1, pp. 1850-1857. ISSN 1516-3598.  http://dx.doi.org/10.1590/S1516-35982004000700024.

The experiment was conduced to evaluate the effects of corn replacement for forage cactus on the performance of crossbreed lactating cows and nutrient digestibility. Eight cows were assigned a two latin square design in a factorial 2 x 2 arrangement (two forage cactus cultivars, with or without corn).There was not interaction between forage cactus and corn and the effect of both were analyzed in an isolated way. The intake of dry matter, organic matter, acid detergent fiber, crude protein, ether extract and total carbohydrates were not affected by the forage cactus. Animals that received giant cultivar presented larger neutral detergent fiber intake. The diets with corn presented larger dry matter intake (kg/day and % of LW). The intake of TDN, the coefficients of digestibility of all nutrients, the fat corrected milk production, fat content and kg of milk: dry matter intake ratio were not affected not by the forage cactus cultivars neither by the inclusion of corn.

Palavras-chave : digestibility; energy; intake; milk production; semi-arid.

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