Resumen

FARFAN LOPEZ, Charly; ROSSINI, Mario  y  DE BASILIO, Vasco. Effect of the addition of electrolytes in water or feed on productive and some blood variables in broilers under conditions of heat stress . Zootecnia Trop. [online]. 2013, vol.31, n.3, pp.225-234. ISSN 0798-7269.

The effect of the addition of electrolytes in water and feed on productive and blood variables during the fi nal stage, under conditions of chronic heat stress (28 to 35 d of age) and acute heat stress simulated (AHSS) at 36 d of age in broilers were studied. 192 broilers were randomly distributed, with eight replicates/treatment (eight broilers/ repeat). The three treatments (T) as follows: T1: without electrolytes addition; T2: addition of electrolytes in feed; T3: adding electrolytes in water. The source of electrolytes was: NaHCO3 (0.83%), NH4Cl (0.07%), NaCl (0.30%), obtaining an electrolyte balance of 240 mEq. Variables evaluated were: production and blood pH, partial pressures of O2, CO2 and HCO3, hematocrit, hemoglobin, plasma protein, white blood cells, red blood cells, blood electrolytes, and mortality. Data were analyzed by ANOVA. The results showed that the addition of electrolytes in water or feed during chronic stress, increased water consumption in Broilers supplemented, with no signifi cant effects on production parameters. Mortality during the AHSS decreased (22%) (P<0.001) in the T3, levels of Na + (129.73 ± 1.87 mEq/l) and Cl-(111.73 ± 1.54 mEq/l) varied (P<0.05) being greater than T1 T3. Determined that the addition of electrolyte helps maintan blood production variables stable, decreasing mortality in the AHSS.

Palabras clave : electrolyte; heat stress; blood gases; broilers.

        · resumen en Español     · texto en Español     · Español ( pdf )