Effect of Toasting Time of Full-Fat Soyabean in Diets on Performance and Cost-Benefit of Broiler Chickens

Monday Jugbodu Evelyn, Attah Sunday, Shaahu David Terhemba

Abstract


This study evaluated the effect of the toasting time of full-fat soyabean (FFSB) used in diets on the performance of broiler chickens, with emphasis on growth performance, carcass characteristics, and cost-benefit. One hundred and fifty (150) broiler chickens were fed diets containing full-fat soyabean, which was toasted at a constant temperature of 130 ℃ at different time durations 30,35,40, and 45 minutes, represented as T2, T3, T4, and T5, respectively. Each treatment had 3 replicates, and each replicate had 10 birds assigned in a completely randomized design (CRD). Feed and water were supplied ad libitum, and the trial lasted for 8 weeks. Results for growth performance showed that toasting time significantly influenced nutrient availability and absorption, which in turn affected the performance of broiler chickens. Birds fed diets containing FFSB toasted for 40 minutes(T4) exhibited superior weight gain (1573.00g), improved FCR (2.54), and better carcass traits, such as percentage breast (24.20 %), when compared to those fed T2, T3, and T5 diets. The treatments had an increasing effect on some carcass parts, such as the breast and thigh muscle). The cost-benefit analysis showed T4 with the highest profit (₦2869.20) accrued with birds fed T4, as well as return to naira invested (RNI) of ₦0.54 and a benefit-cost ratio (BCR) greater than one (1) (₦1.54). The optimal toasting condition was determined to be 40 minutes at 130 ℃, which achieved the best balance between deactivating antinutritional factors (ANF) and nutrient preservation. These findings highlight the importance of precise thermal processing of FFSB before use in broiler chicken diets and suggest that careful control of toasting conditions can maximize growth performance, carcass yield, and enhance economic benefits.  It is therefore concluded that FFSB should be toasted for 40 minutes to give optimal balance between deactivating ANF and denaturing of amino acids, which will increase growth performance and enhance cost-benefit. 


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References


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