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Arquivo Brasileiro de Medicina Veterinária e Zootecnia
Print version ISSN 0102-0935
RETORE, M.; SILVA, L.P.; TOLEDO, G.S.P. and ARAUJO, I.G.. Effect of agricultural by-products fiber and its nutritional evaluation for rabbits. Arq. Bras. Med. Vet. Zootec. [online]. 2010, vol.62, n.5, pp. 1232-1240. ISSN 0102-0935. http://dx.doi.org/10.1590/S0102-09352010000500028.
The influence of fiber - alfalfa hay, citrus pulp, and soybean hulls - in diets of rabbits was studied on performance, digestibility coefficients, blood parameters, and meat characteristics. The animals were allotted into three treatments that consisted in: control diet, with alfalfa hay; total substitution of alfalfa hay by citrus pulp; and total substitution of alfalfa hay by soybean hulls. The different fiber fractions from citrus pulp and soybean hulls did not affect animal performance at the 89th day; thus, these ingredients can be used as substitute of alfalfa hay on diet of rabbits. Fiber quality of citrus pulp decreased blood triacylglycerol, cholesterol, and hemoglobin levels. Lower amount of lignin in relation to cellulose and hemicellulose of soybean hulls provided better nutrient digestibility coefficients and higher tenderness meat, however, lower protein deposition when compared with the citrus pulp diet.
Keywords : rabbit; citrus pulp; cation-exchange capacity; fiber quality.