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Effects of increasing dietary levels of commercially heated soybeans on performance nutrient retention and carcass quality of broiler chickens



Effects of increasing dietary levels of commercially heated soybeans on performance nutrient retention and carcass quality of broiler chickens



Canadian Journal of Animal Science 67(3): 821-828



Two experiments were conducted to investigate the effects of supplementing broiler diets fed to 6 wk of age, with 0, 10, 20 or 30% of commercially heated unextracted soybeans (T.I.A. 3.9 mg g-1). Birds fed soybeans consumed less feed in the 0- to 21-d starter period and this was associated with reduced weight gain (P < 0.05) and increased feed intake: weight gain (P < 0.05). There was a decrease in calcium, phosphorus, magnesium and fat retention with feeding of soybeans and this effect was most pronounced with the 30% inclusion level. Diet ME was also reduced with increased use of soybeans (P < 0.05). However, there was a decrease in digesta and fecal soap concentration with an increase in dietary levels of heated ground soybeans (P L 0.01). While carcass weight followed a trend similar to that of weight gain (P < 0.01), there was no difference between treatments for percent carcass yield (P L 0.05). Soft fat depot areas were observed when soybean oil was the primary dietary fat. Fatty acid analysis of carcass fat confirms a high degree of unsaturation for birds fed 30% heated soybeans. However, this feature was not unduly objectionable nor did it affect carcass grading (P > 0.05).

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Accession: 005308780

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DOI: 10.4141/cjas87-085


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