Resumen

ARRIETA, Darwuin et al. Effect of Saccharomyces cerevisiae¹⁰²⁶ Culture and/or Selenium Intake on Broiler Exposed to Low Levels of Aflatoxin B₁ in the Ration: 1. Serum Proteins and Serum Enzymatic Activity Values. Rev. Cient. (Maracaibo) [online]. 2006, vol.16, n.6, pp.613-621. ISSN 0798-2259.

This trial was undertaken to determine the effects of the addition of 0.1% yeast culture Saceharonyces cerevisiae¹⁰²⁶ (CSc) and 2mg/kg of selenium (Se) added to contaminated diets with 0.07mg/kg (70 ppb) of aflatoxin B₁ (AFB₁), on serum proteins concentration (total proteins, albumin, globulin) and serum enzymes activity of aspartate-aminotransferase (ASAT) and alanino-aminotransferase (ALAT) in broilers. 480 broilers of 1-day-old Hubbar x Hubbar males were randomly assigned to receive 8 different diets for 42 days, each diet with 4 replicates of 15 chickens. Those diets corresponded to the following treatments (T) T₁: control group receiving commercial food (CF) without detectable aflatoxin levels; T₂: CF + AFB₁; T₃: CF + CSc; T₄: CF + AFB₁ + CSc; T₅: CF + Se; T₆: CF +AFB₁ + Se; T₇: CF + CSc + Se; T₈: CF + AFB₁ + CSc + Se. Single or combined inclusion of CSc and Se in the feed whether contaminated or not with AFB₁ did not cause any significant change in the assessed serum proteins nor in serum activity of ALAT. Changes (P < 0.05) were detected in serum activity of ASAT in broiler chickens fed with rations containing AFB₁ (T₂), but these effects were counterfeited by the inclusion of CSc and Se in the ration containing AFB₁ (T₄ and T₆). These effects were not observed when both additives (CSc + Se) were added to the ration containing AFB₁ (T₈). These results suggest apparent properties of each kind of additive to prevent aflatoxicosis-associated effects produced by low levels of AFB₁ added to the ration, in broiler chickens

Palabras clave : Aflatoxin; yeasts; selenium; chickens; serum.