Growth and carcas characteristics of broilers fed alkali processed soybeans

Résumé

An eight-week feeding tial was conducted to investigate the effect of feeding alkali processed soyabeans to broilers.  Soyabeans were processed in aqueous solutions of sodium chloride, sodium sesquicarvonate (trona) and alum respectively. The concentration of each of the salts was 3%. The soyabeans, after drying, were used in compounding 3 diffefrent diets. The control (T1) contained roasted soyabeans while diets T2 , T3 and T4 contained NaCl, trona and alum respectively. Broiler feeding lasted for 8 weeks starting from day - old. The results indicated that feeding NaCl processed soyabeans to broilerss significantly (P<0.05) depressed growth rate, feed consumption and body gain. NaCl treated soyabeans produced feed/gain ratio, protein efficiency ratio (PER), carcass and organ proportion  comparable to thr control. The growth rate, feed intake and weight gain of NaCl to sufficiently inactive trypsin inhibitors and remove a substsntisl proportion of polyphenols and oligosaccharides in soyabeans. It was concluded that since alkaline salts are cheap and readily available all the year round their use in processing soyabeans should be encourage.