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Abstract
1. Soybean meal (SBM) was replaced with sesame seed meal (SSM) at proportions of 0·00, 0·33, 0·67 and 1·00 on a protein basis in broiler diets (2 to 42 d of age). Each diet was fed to 8 replicates of 5 birds each.
2. Body weight gain, food efficiency, ready-to-cook (RTC) yield, relative weights of giblet, liver and abdominal fat were not affected by including SSM up to 0·67 proportion of SBM in starter and finisher diets (360 and 310 g/kg, respectively). The relation between level of SSM and growth performance variable (weight gain, food efficiency and RTC yield) was non-linear.
3. Weight, breaking strength and ash content of tibia decreased non-linearly with the proportion of SSM in diet.
4. The activity of alkaline phosphatase and protein concentration in serum decreased linearly with the amount of SSM in the diet.
AcknowledgementS
The authors are thankful to the National Agricultural Technological Project for funding the project and Degussa, Germany for their help in amino acid analysis of the food ingredients.