THE EFFECT OF COTTONSEED MEAL (CSM) GROUNDNUT MEAL (GNM) MIXTURE AND PROTEIN LEVELS IN PRACTICAL BROILER DIETS

Résumé

Two experiments were conducted with Ross-typpe chicks to determine the optimum substitution level of CSM for GNM protein in both starter and finisher rations. In the first experiment 500 day old broilers were used in a 42 ---day 5 x 2 factorial arrangement to study the effects of 0, 10, 20, 30, 40 or 50% CSM and 24 to 26% protein diets on final body weight, rate of gain and feed efficiency. The basal diet was supplemented with methionine to meet ARC (1975) recommended level and 0.2% lysine. The result indicate that up to 40% of GNM could be replaced with CSM without any adverse result on rate of gain, final body weight and feed efficiency. Chicks on 26%protein diets grew better than those on 24% but the difference were not statistically significant. In the second experiment 20% protein diet was substituted up to 100% with CSM protein. It was found that up to 70% protein of GNM could be replaced by CSM in a broiler finisher with slight but non-significant differences in the rate of gain, feed efficiency and final body weight. The results as well as economic implication of these findings are fully discussed