Replacement Value of Soybean Meal and Maize with Raw or Boiled Pigeon Pea Seed Meal in Exotic Pullet Diets
A study to determine the replacement value of raw or boiled pigeon pea seed meal (PSM) for soybean meal and maize in the diets of exotic pullets (1-56 d) was conducted with 324 pullet chicks. The experimental design was 2 x 5 factorial in a completely randomized design (CRD). The factors were form (raw and boiled) and inclusion level (0, 15, 20, 25 and 30%) of PSM in the diets. Each treatment was replicated three times with 12 pullet chicks per replicate. Measurements were live weight at 8th week, weight gain, feed and protein intakes, feed conversion ratio (FCR) and protein efficiency ratio (PER). Results showed that raw or boiled PSM included as 15, 20, 25 and 30% of the diet replaced 20.16, 26.87, 33.60 and 40.30% maize, respectively and correspondingly 25.92, 34.59, 43.21 and 51.89% soybean meal, respectively. Pullets fed raw PSM diet had significantly (P<0.05) higher feed intake (32.26 g), FCR (5.11), daily protein intake and significantly (P<0.05) lower PER (1.10) and cost per kg of diet (₦58.78) than pullets fed boiled PSM diet. Diet of 25% PSM significantly (P<0.05) lowered daily weight gain more than 0, 15 and 20% PSM diets did. Cost per kg diet also significantly (P<0.05) decreased with increasing levels of PSM in the diets. The conclusion was that raw or boiled PSM could be included up to 30% in pullet chicks’ diets, replacing 40.30% maize and 51.89% soybean meal.
Keywords: Exotic pullets; maize; pigeon pea seed meal; replacement; soybean meal.