1993, Number 1
Vet Mex 1993; 24 (1)
Alpízar SO, Pérez-Gil RF, Avila GE, Valles SV, López CC, Ocampo CL
PDF size: 350.70 Kb.
ABSTRACTAn experiment was carried out with the aim to evaluate a Β-adrenergic agonist (clenbuterol) as an additive in broiler chicken diets. Two hundred, 28 clays of age, sexed cliicken from a commercial line were distributed in 20 groups in a battery cage. A factorial arrangement, 2 x 5 at random, was designed. One factor was the sex and the other one was the diet supplementation of clenbuterol at five different. levels: 0.0, 0.5, 1.0, 1.5 and 2.0 ppm. Every treatment. was repeated twice with ten animals each one. Clenbuterol was added to a commercial diet containing a mix of sorghum plus soybean with 3030 kcal ME/kg, 20% protein, 1% lysine, 0.77% methionine plus cystine, 0.95% calcium and 0.47% available phosphorus. Gain weight, feed consumption, feed conversion and abdominal fat deposits were recorded. Results at 48 days of age indicated significant differences (P ‹ 0.05) between sexes for body weight, with more gain formales than for females. There were no effect coming from the Β-adrenergic compound and no differences for feed consumption or feed conversion among treatments. However, there were significant differences among treatments with regard to abdominal fat deposits. The inclusion of clenbuterol at 1.0 ppm is the best formales and females, as it reduces significantly the fat deposition.