Abstract
Two hundred Lohmann broiler chicks were equally allocated into 20 pens after being adapted on a control diet for 7 days. The four dietary treatments containing graded levels of sorghum germ meal (SGM, 0, 75, 150, 225 g kg−1) were randomly assigned to the pens (five pens per dietary treatment). L-Lysine and DL-methionine were added to the diets to raise their contents to the recommended levels for starter broiler chicks. Feed and water were provided ad libitum throughout the 6-week experimental period. The dietary treatment had negative linear effects (P < 0.01) on body weight, feed intake, weight gain, feed:gain ratio and dressing percentage, and a positive linear effect (P < 0.01) on liver and viscera relative weights. It had insignificant effects (P > 0.05) on pancreas, bursa relative weights, incidence of leg abnormalities and mortality rate. Abdominal fat relative weight had shown a significant negative linear effect (P < 0.05). Dietary SGM had no detectably different effect on colour, juiciness, tenderness and flavour of the meat when evaluated by semi-trained panellists.
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