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Effect of toasting time on the utilization of soyabean in broiler feeds


OS George
DN Onunkwo
KO Ogbamba

Abstract

The effects of various toasting time on the utilization of dietary full-fat soyabean as source of protein was studied, using 180 unsexed day-old Gabro broiler chicks. Bird were fed a control diet or diets in which full fat soyabean toasted for 0,5,10,15 and 20 minutes was added at 30% inclusion level during 4 weeks of feeding. Inclusion of full fat soyabean irrespective of toasting time caused a decrease in feed intake relative to the control diet (p<0.05). Birds fed the control diet retained the highest levels of body weight gain, feed intake and feed/gain ratio, which was comparable to those of birds fed diet with full-fat soyabean toasted for 15 minutes but higher than those of birds fed diets with full-fat soyabean toasted for 0,5,10 or 20 minutes (p<0.05). The current study showed that full-fat soyabean toasted for 15 minutes will remove the trypsin inhibitors, thus enhancing growth and performance of broiler birds.

Keywords: Toasting time, full-fat soyabean, broiler, feed


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eISSN: 0794-4721