Blood biochemical parameters of lambs fed diets containing cactus cladodes

ABSTRACT This study aimed to evaluate the effects of partial replacement (750g/kg) Tifton hay by two cactus cladodes (Nopalea or Opuntia) on metabolic profile lambs. Thirty-six uncastrated male Santa Inês lambs (22.0 ± 2.9kg initial body weight) were distributed in a completely randomized design, with three treatments and 12 repetitions. The animals fed control diet (Tifton as exclusive roughage), Miúda cladodes-based Orelha de Elefante Mexicana (O.E.M.) diet. Blood samples collected one day before (baseline) 45 days after introduction tested diets. caused an increase (P=0.055) serum activity gamma-glutamyl transferase enzyme (53.66U/L) blood content glucose fructosamine. O.E.M. lower (P=0.038) cholesterol (41.33mg/dL). Regardless variety, there was decrease (P=0.001) indirect bilirubin, urea, sodium, magnesium concentration. lamb feeding increases activity, indicating liver and/or kidney changes, but does not cause relevant damage energy, protein, mineral metabolism.