Performance of two strains of laying fowl fed on diets containing field beans (Vicia faba L.)

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Abstract
SUMMARY Fifteen hundred Thornber 808 and 909 female chicks were reared for 126 days from day-old on conventional diets or on diets with 200 g field beans/kg. From 127 to 490 days they were offered a control diet or diets with 100 or 200 g field beans/kg. When the diets fed from 127 to 490 days contained 0 or 200 g field beans/kg their food intakes were 45·4 and 44·6 kg/bird and they laid 235 and 233 eggs, respectively. The differences were not significant. Efficiency of food conversion to egg mass was significantly reduced from 0·310 to 0·303 when beans were increased from 100 to 200 g/kg of diet and mean egg weight was significantly reduced from 58·9 to 57·6 g when beans were included at 200 g/kg of diet in the 127- to 490-day period.